Storing Laboratory Chemicals
By DEAR
email: d34r123@yahoo.co.id
KOMUNITAS BLOGGER UNIVERSITAS SRIWIJAYA
Storing Laboratory Chemicals
UCSC GUIDELINES AND PROCEDURES
1. Segregation
2. One Chemical, Multiple Hazards?
3. Labeling
4. Storage Facilities
5. Secondary Containment
6. Outdated Chemicals
7. Inventory
8. Hazard Information
9. Radioactive Materials
10. Reactives
A. Pyrophoric Substances
B. Explosives
C. Peroxide Forming Compounds
D. Water Reactives
11. Corrosives
A. Acids
B. Bases
12. Flammables/Combustibles
A. Flammable and Combustible Liquids
B. Flammable Solids
13. Oxidizers
14. Toxic Compounds
15. Light-Sensitive Chemicals
16. Compressed Gases
17. Carcinogens and Select Carcinogens
GENERAL STORAGE CONSIDERATIONS
1. Segregation
Store chemicals according to hazard classification and compatibility. Chemicals should be
arranged alphabetically, only after you have segregated them into compatible hazard
classes. Keep incompatible hazard classes in separate storage areas or keep them isolated
from one another by secondary containment. The goal is to prevent mixing that could lead to
secondary hazards (fire, toxic gases, explosion, chemical degradation, etc.)
Hazard classes are described in greater detail throughout this Guide. Contact your Chemical
Hygiene Coordinator or Environmental Health and Safety (EH&S) if you need help or
more information on chemical storage and compatibility.
2. One Chemical, Multiple Hazards?
Since many compounds exhibit more than one hazard characteristic you should segregate
based on the characteristic(s) posing the greatest storage risk. For example benzene, a
material that is both flammable and toxic, poses a greater storage hazard from flammability
than from carcinogenicity. Therefore, benzene should be stored in the flammable liquids
cabinet rather than on the \'toxics\' shelf by the beryllium compounds. The hierarchy listed
below should be used as a general guide for helping you rank hazard characteristics
associated with storage.
RadioactiveÞPyrophoricÞExplosiveÞFlammable
LiquidÞCorrosive Acid/BaseÞWater ReactiveÞFlammable
SolidÞOxidizerÞ CombustibilityÞToxicity Þ No special
segregation required.
3. Labeling
Chemical containers and storage areas must be clearly labeled. Container labels should
include the chemical name, major hazard(s), and date received (or prepared).
4. Storage Facilities
Ideally, chemicals should be stored within an enclosure, such as a cabinet, locker, etc. If
open shelves are used they should be sturdy, securely fastened to the wall (earthquake
safe), and fitted with a barrier or lip (1 to l.5 inches high). Restraining cords should be used
on open shelves as needed to prevent chemicals from topling over the barrier lip.
Storage areas should be clean and dry, away from heat or direct sunlight. Vented, storage
areas must be properly exhausted e.g., to the fume hood system or independently ducted to
the outside. If you have questions about ventilation in your chemical storage area, contact
EH&S.
5. Secondary Containment
Liquid hazardous chemicals should be stored in secondary containers to prevent or minimize
the possibility of accidental release and to ensure compliance with certain local and state
regulations.
Requirements for secondary containment are based on container size, not the volume of
liquid inside the container. Container size requireements are as follows:
· Radioactive liquids when in containers of 250 millimeters or more,
· All other hazardous liquids in containers of 2.5 liters or more.
General Hazard Groups Requiring Separation in Secondary Containment:
1. Flammable or combustible liquids and halogenated solvents (alcohol\'s, ethers,
trichloroethane, perchloroethane etc.).
2. Concentrated mineral acids (nitric, hydrochloric, sulfuric, hydrofluoric, phosphoric).
3. Concentrated bases (ammonium hydroxide, potassium hydroxide, sodium hydroxide).
4. Radioactive materials.
See the Secondary Containment Guidelines for Chemical Storage information sheet for
additional information.
6. Outdated Chemicals
Outdated, unwanted, or deteriorated chemicals should be disposed of through the Campus
hazardous waste program. Contact EH&S for specific chemical disposal information.
Remember disposal costs tend to rise over time; it will be cheaper to get rid of your waste
chemicals now rather than later.
7. Inventory
A chemical inventory should be maintained for all chemicals routinely stored in the
laboratory. The inventory should include the chemical name, quantity, date received, and
storage location. Inventories should be updated routinely.
8. Hazard Information
A Material Safety Data Sheet or other source of hazard information must be available for all
chemicals in the lab. Contact your chemical hygiene coordinator or EH&S for assistance
with hazard information.
SPECIFIC STORAGE GUIDELINES BY CHEMICAL hazard class
9. Radioactive Materials
UCSC has a license from the state\'s Department of Health Services Radiation Branch to
purchase and use radioactive materials. This license is an agreement that establishes the
criteria under which the University is allowed to purchase, use, store, and dispose of
radioisotopes. Specific requirements for storing radioisotopes are described in the Campus
Radiation Safety Manual. General storage considerations included in the manual are as
follows:
1. Radioactive materials stored in either a controlled or uncontrolled area must be secured
against unauthorized removal.
2. Radioactive materials must be clearly marked with the radiation caution symbol and the
words "CAUTION - RADIOACTIVE MATERIALS\'. In addition to proper signage,
storage locations should have an inventory of the stored materials identifying the types and
maximum quantity of radioisotopes present.
3. Double containment is recommended as a safe storage and transport practice.
Contact the Radiation Safety Officer, x3542 for more detailed information on the use and
storage of radioactive materials.
10. Reactives
chemicals that vigorously polymerize, or self-react to produce fire and/or toxic gasses from
shock, slight pressure/temperature changes, friction or contact with moisture are considered
reactive. They typically have more than one hazard class (e.g. flammable solid and water
reactive) and therefore have special handling and storage requirements. Always consider the
specific hazards associated with reactive chemicals before determining the best way to store
them. Hazard classes listed below in A through D describe the more common specific types
of reactive materials.
A. Pyrophoric Substances
Pyrophoric substances ignite spontaneously upon contact with air at temperatures of less
than 130F. Pyrophorics may exist as solids (elemental phosphorus), liquids
(tributylaluminum), or gasses (silane).
1. As a general rule, pyrophoric materials should be stored in a separate flammable storage
cabinet away from flammable and combustible liquids.
2. Elemental phosphorus should be stored and cut under water.
3. Pyrophoric gasses such as silane have specific storage and handling regulations. Contact
EH&S for assistance if you have pyrophoric gasses.
B. Explosives
Explosions are the result of the very rapid decomposition of a chemical which results in the
release of energy, usually in the form of heat, fire, and extreme pressure changes. There are
many circumstances under which materials can explode making the hazard class
\'explosive\' difficult to define. The following factors are important when considering the
explosive potential of laboratory chemicals.
1. Oxygen content of the compound. Some peroxides (e.g. dry benzyol peroxide) and other
strong oxidizers are potentially explosive.
2. Reactive Groups. Some classes of compounds such as hydrazines contain both an
oxidative and reductive group and are therefore very unstable. Many nitro compounds (TNT,
Azides, dry Picric Acid, are also considered potentially explosive).
3. Carefully read the product label as an indicator of the relative stability/explosivity of a
chemical.
4. Decisions on storage of potentially explosive materials should be made based on the
individual characteristics of the chemical. Special attention should be given these
compounds to ensure your storage practices do not increase the hazard, (e.g. allowing picric
acid to dry).
C. Peroxide Forming Compounds
Many ethers and similar compounds tend to react with air and light to form unstable
peroxides. Some of the more common peroxide-forming chemicals include p-dioxane, ethyl
ether, tetrahydrofuran, acetaldehyde, and cyclohexene. The following storage practices will
help minimize hazards associated with these types of chemicals.
1. Store peroxide-forming chemicals in airtight bottles or cans away from light.
2. Label containers with date received and date opened.
3. Discard peroxide formers 3 to 6 months after opening, depending on the chemical (see
table below).
4. Discard unopened containers of peroxide-forming chemicals in accordance with the
manufacturer\'s expiration date or 12 months after the date received.
Common Peroxide Forming Chemicals
Three Month Limit
ABSOLUTE ETHERS (Ethyl Ether Anhydrous)
Bis (2-Methoxyethyl) Ether (Diethylene-Glycol Dimethyl Ether; Diglyme)
Diethylene Glycol Dlmethyl Ether (Diglyme)
Diethylether (Ethyl Ether; Ether)
Dimethoxyethane (Glyme)
Dioxane (Diethylene Oxide)
Diisopropyl Ether
Divinyl Acetylene
Ethyl Ether
Ethyl Vinyl Ether
Glyme (1 ,2-Di Methoxyethane; Ethylene Glycol
Dimethyl Ether)
Isopropyl Ethers
Potassium Amide
Potassium Metal
Sodium Amide (Sodamide)
Tetrahydrofufian (Cyclotetramethylene Oxide)
Vinylidene Chloride (1,1 Dichloroethylene)
Six Month Limit
Acetal
Acrolein (Propenal; Acrylic Aldehyde; Allyl Aldehyde)
Acrylic Acid
Acrylonitrile (Propene Nitrile; Vinyl Cyanide)
Alkyl-Substituted Cycloaliphatics (Methyl, Ethyl Cyclo_____ane)
ALL OTHER ETHERS
Allyl Gylcidyl Ether
n-Amyl Ether
Anisole
Butadiene (Erythrene)
n-Butyl Glycidyl Ether
Butyl Vinyl Ether
2 Chloro 2,3 Butadiene
Chloroethylene
Chloromethyl Ether
Chloroprene (2-Chloro-1, 3-Butadiene; Chlorobutadiene)
Chlorotrifluoroethylene
Cyclopentene
Methycylopentane
Methyl 1-Butylketone (2-Hexanone; N-Butyl Methylketone)
Methyl Acetylene (Allylene; Propyne)
Methyl Ether
Methyl Ether Ether
Methyl Isobutyl Ketone
Methyl Methacrylate
Methylvinyl Ether
Olefins (Unsaturated hydrocarbons; Propene, Hexene, ______ene )
Perfluoroethylene
Phenyl Ether
Propyne
Styrene (Phenylethylene;Vinylbenzene;Cinnamene)
Tetrafluoroethylene (Perfluoroethylene)
Tetrahydronaphthalene (Tetralin)
Vinyl Acetate
Vinyl Acetylene
Vinyl Chloride (Chloroethylene; Chloroethene)
Vinyl Ethers
Vinyl Pyridine
D. Water Reactives
Contact with moisture causes this class of chemicals to yield toxic, flammable or explosive
gasses, or to contribute to other hazardous conditions. Examples include hypochlorite
compounds and metal hydrides.
1. Keep away from water sources (do not store above or below sinks, etc.).
2. Use dry chemical extinguisher for fire.
3. Store with desiccant (e.g. silica gel)
11. Corrosives
Corrosive is a generic term that includes many different types of acids and bases. Storing
corrosives requires careful thought and planning due to their ability to react with materials
that contain them (e.g. metal and wood shelving or cabinets). In addition, corrosives pose a
serious exposure risk to users. Many corrosives react vigorously with other corrosives.
A. Acids
For purposes of storage, liquid acids, pH <5 should be grouped according to the following
sub-classes: organic acids (e.g., glacial acetic acid, formic acid) mineral acids.(e.g.,
hydrochloric and phosphoric), and oxidizing mineral acids (e.g., chromic, hydrofluoric,
perchloric, and fuming acids such as nitric and sulfuric.
1. Segregate acids from bases and active metals such as sodium, potassium, magnesium,
etc.
2. Keep organic acids separate from mineral and oxidizing acids.
3. It is usually permissible to store organic acids with flammable and combustible liquids.
4. Segregate acids from chemicals that could liberate toxic gases upon contact such as
sodium cyanide, iron sulfide, etc.
5. Use secondary containment for stored acids and use bottle carriers when transporting
outside of the lab.
6. Store acid drums and carboys in a cool, dry place, away from direct sunlight and heat
sources.
7. Store large bottles of acid on shelves waist high or lower or in an approved acid cabinet.
8. Place containers for acid waste in spill trays to contain leaks or spills. Plastic trays or
Pyrex baking pans are effective and inexpensive. Perchloric acid should be in a glass or
porcelain pan well away from organics. (See the Information Sheet on Perchloric Acid)
9. Store oxidizing acids such as concentrated sulfuric and nitric well away from flammables.
B. Bases
Solid or liquid bases, pH < 10 (e.g., ammonium hydroxide, calcium hydroxide, potassium
hydroxide, sodium hydroxide) should be stored as follows.
1. Segregate bases from acids.
2. Store solutions of inorganic hydroxides in polyethylene containers.
3. Place alkaline solutions in spill trays to contain leaks or spills.
4. Store large bottles on shelves waist height or lower or in an approved corrosives cabinet.
12. Flammables/Combustibles A. Flammable and Combustible Liquids
Flammables and combustible liquids are defined by NFPA and classed according to flash
point and boiling point. The classes range from Class IA flammable liquids, i.e. those having
flash points below 73F and boiling points below 100F; to Class IIIB combustible liquids, i.e.
those having flash points at or above 200F. (For more information on flammable liquid
classifications see the information sheet on flammable liquids or contact EH&S.)
Flammables may be stored with combustible chemicals, combustible organic acids such as
acetic and certain non flammable solvents such as methylene chloride as space permits.
Some common flammable liquids include acetaldehyde, acetone, hexane, toluene, xylene,
ethanol. General considerations on the storage of flammables the lab is as follows:
1. Quantities of more than 10 gallons of Class I flammable liquids must be stored in approved
safety cans (up to 25 gallons) or in an approved flammable storage cabinet (up to 60
gallons).
2. Glass containers must not be used for flammable liquids unless required to maintain
chemical purity. Non analytical-grade solvents must be stored in metal cans.
3. Flammable liquids which require refrigeration should only be stored in properly labeled
\'Lab-Safe\' or \'Flammable Storage\' refrigerators. NEVER store flammable liquids in a
conventional refrigerator.
4. Store flammables away from oxidizers.
5. Avoid storage in close proximity to heat, direct sunlight, flame or other ignition sources.
B. Flammable Solids
Any solid material which readily burns from friction, retained heat or is water reactive and
spontaneously combustible is considered a flammable solid. Examples include picric acid,
calcium carbide, phosphorus pentachloride, lithium, potassium.
1. Elemental lithium, potassium, and sodium should be stored under kerosene or mineral oil.
2. As a general rule store in separate flammable storage cabinet away from flammable and
combustible liquids. If water reactive do not store under sinks, etc.
13. Oxidizers
This class of compounds liberate oxygen to support combustion. Examples: potassium
permanganate, ferric chloride, sodium nitrate, hydrogen peroxide.
1. Separate oxidizers from flammable and combustible materials, as well as from reducing
agents such as zinc, alkaline metals, and formic acid.
2. Do not store on or in areas constructed of wood or other combustible materials.
14. Toxic Compounds
Poisons can be classed as highly toxic (oral rat LD50 < 50 mg/kg), toxic (oral rat LD50 50100 mg/kg) or as select carcinogens (see section 17 for more on carcinogens).
1. Store and label toxic chemicals to ensure users are alerted to the potential hazard.
2. As with all chemicals store in non breakable, tightly sealed, containers.
15. Light-Sensitive Chemicals
Segregate light sensitive chemicals should be stored according to hazard, e.g., bromine with
oxidizers, arsenic with toxic compounds. Examples include bromine, mercuric salts,
potassium ferrocyanide, sodium iodide
1. Avoid exposure to light to prevent decomposition.
2. Light-sensitive chemicals should be stored in amber bottles.
3. If the bottle must be wrapped in foil, be sure to label the outside of the foil wrapper.
16. Compressed Gases
1. Segregate and clearly mark full and empty cylinders.
2. Secure cylinders upright using 2 non combustible restraints (one high on the cylinder and
one toward the base of the cylinder) such as chains, metal racks, or other approved means.
3. Replace valve caps when cylinders are not in use.
4. Remove damaged or defective cylinders from service.
5. Store compressed gases away from heat sources.
6. Separate cylinders by hazard classification and compatibility.
7. Use and store extremely hazardous gases only in approved ventilated safety gas cabinets
or other exhausted enclosure.
17. Carcinogens and Select Carcinogens
Specifically regulated chemical carcinogens must be stored and handled in strict accordance
with Cal-OSHA regulations.
The Cal/OSHA Laboratory Standard requires employers to make provisions \'additional
employee protection\' when work involves particularly hazardous substances. These
substances include \'select carcinogens\' which are defined as any substance that meets the
following criteria:
1. It is regulated by Cal/OSHA as a carcinogen; or
2. It is listed under the category, "known to be carcinogens," in the Annual Report
on Carcinogens published by the National Toxicology Program (NTP) (1985 edition); or
3. It is listed under Group 1 ("carcinogenic to humans") by the International
Agency for Research on Cancer Monographs (IARC) (Volumes 1-48 and Supplements 1-8);
or
4. It is listed in either Group 2A or 2B by IARC or under the category, "reasonably
anticipated to be carcinogens" by NTP, and causes statistically significant tumor
incidence in experimental animals in accordance with any of the following criteria:
(A) After inhalation exposure of 6-7 hours per day, 5 days per week, for a significant portion
of a lifetime to dosages of less than 10 mg/m3;
(B) After repeated skin application of less than 300 mg/kg of body weight per week; or
(C) After oral dosages of less than 50 mg/kg of body weight per day.
Chemicals With Specific Regulatory Mandates
Cal/OSHA has specific mandates such as requirements to monitor for exposure, perform
medical monitoring, and provide special training for the following list of chemicals.
53-96-3 Acetylaminofluorene/ 2-
107-13-1 Acrylonitrile
92-67-1 Aminodiphenyl/ 4-
7440-38-2 Arsenic, and Inorganic As Compounds
1332-21-4 Asbestos
71-43-2 Benzene
92-87-5 Benzidine
542-88-1 Bis(chloromethyl)ether
7440-43-9 Cadmium & Cd compounds
107-30-2 Chloromethylmethylether
96-12-8 Dibromo-3-chloropropane/ 1,2-
91-94-1 Dichlorobenzidine/ 3,3\'-
106-93-4 Ethylene Dibromide
75-21-8 Ethylene Oxide
151-56-4 Ethyleneimine
50-00-0 Formaldehyde
7439-92-1 Lead
101-14-4 Methylenebis(2-chloroaniline)/ 4,4\'-
134-32-7 Naphthylamine/ alpha-
91-59-8 Naphthylamine/ beta-
92-93-3 Nitrobiphenyl/ 4-
62-75-9 Nitrosodimethylamine/ N-
57-57-8 Propiolactone/ beta-
75-01-4 Vinyl Chloride
Select Carcinogen List
The following is a list of materials meeting the definition of select carcinogen as defined
above. This list was provided to UCSC by Los Alamos National Laboratory and is based on
their chemical inventory. Items in bold italic are the materials with specific regulatory
mandates.
75-07-0 Acetaldehyde
60-35-5 Acetamide
53-96-3 Acetylaminofluorene/ 2-
79-06-1 Acrylamide
107-13-1 Acrylonitrile
77536-66-4 Actinolite [asbestiform]
23214-92-8 Adriamycin
3688-53-7 AF-2[2-(2-Furyl)-3-(5-nitro-2-furyl)acrylamide]
1402-68-2 Aflatoxins
82-28-0 Amino-2-methylanthraquinone/ 1-
712-68-5 Amino-5-(5-nitro-2-furyl)-1,3,4-thiadiazole/ 2-
26148-68-5 Amino-9H-pyrido[2,3-b]indole)/ A-alpha-C(2-
117-79-3 Aminoanthraquinone/ 2-
60-09-3 Aminoazobenzene/ p-
97-56-3 Aminoazotoluene/ o-
92-67-1 Aminodiphenyl/ 4-
61-82-5 Amitrole
7788-98-9 Ammonium Chromate
7789-09-5 Ammonium Dichromate
12172-73-5 Amosite
0-01-0 Androgenic (anabolic) steroids
134-29-2 Anisidine Hydrochloride/ o-
90-04-0 Anisidine/ o-
77536-67-5 Anthophyllite [asbestiform]
1309-64-4 Antimony Trioxide
140-57-8 Aramite
7774-41-6 Arsenic Acid Hemihydrate
10102-53-1 Arsenic Acid/ m-
7778-39-4 Arsenic Acid/ o-
1303-32-8 Arsenic Disulfide
1303-28-2 Arsenic Pentoxide
7784-33-0 Arsenic Tribromide
7784-34-1 Arsenic Trichloride
7784-35-2 Arsenic Trifluoride
7784-45-4 Arsenic Triiodide
1327-53-3 Arsenic Trioxide
1303-36-2 Arsenic Triselenide
1303-33-9 Arsenic Trisulfide
7440-38-2 Arsenic, and Inorganic As Compounds
8024-75-9 Arsenical Dip
14060-38-9 Arsenious Acid
1332-21-4 Asbestos
1912-24-9 Atrazine
492-80-8 Auramine (technical grade)
0-02-0 Auramine manufacture
320-67-2 Azacitidine
115-02-6 Azaserine
446-86-6 Azathioprine
10294-40-3 Barium Chromate
12000-34-9 Barium Chromate
12231-18-4 Barium Chromate
37235-82-8 Basic Bismuth Dichromate
1344-38-3 Basic Lead Chromate
54692-53-4 Basic Lead Chromate
56-55-3 Benz[a]anthracene
98-87-3 Benzal Chloride
71-43-2 Benzene
1684-47-5 Benzene-1,3,5-d3
1120-89-4 Benzene-d
1076-43-3 Benzene-d6
92-87-5 Benzidine
50-32-8 Benzo[a]pyrene
205-99-2 Benzo[b]fluoranthene
205-82-3 Benzo[j]fluoranthene
207-08-9 Benzo[k]fluoranthene
98-07-7 Benzotrichloride
100-44-7 Benzyl Chloride
1694-09-3 Benzyl Violet 4B
12161-82-9 Bertrandite
1302-52-9 Beryl Ore
7440-41-7 Beryllium
543-81-7 Beryllium Acetate
1332-52-1 Beryllium Acetate, Basic
19049-40-2 Beryllium Acetate, Basic
10210-64-7 Beryllium Acetylacetonate
17440-85-6 Beryllium Borohydride
7787-46-4 Beryllium Bromide
506-66-1 Beryllium Carbide
13106-47-3 Beryllium Carbonate
7787-47-5 Beryllium Chloride
7787-49-7 Beryllium Fluoride
1111-71-3 Beryllium Formate
7787-52-2 Beryllium Hydride
13327-32-7 Beryllium Hydroxide
7787-53-3 Beryllium Iodide
13597-99-4 Beryllium Nitrate
7787-55-5 Beryllium Nitrate Trihydrate
1304-54-7 Beryllium Nitride
1304-56-9 Beryllium Oxide
13597-95-0 Beryllium Perchlorate
13598-15-7 Beryllium Phosphate
13598-26-0 Beryllium Phosphate
35089-00-0 Beryllium Phosphate
7787-50-0 Beryllium Potassium Fluoride
53684-48-3 Beryllium Potassium Sulfate
10039-31-3 Beryllium Selenate
13598-00-0 Beryllium Silicate
15191-85-2 Beryllium Silicate
58500-38-2 Beryllium Silicate
13871-27-7 Beryllium Sodium Fluoride
13510-49-1 Beryllium Sulfate
7787-56-6 Beryllium Sulfate Tetrahydrate
39413-47-3 Beryllium Zinc Silicate
12770-50-2 Beryllium-Aluminum Alloy
66104-24-3 Beryllium-Aluminum Alloy
11133-98-5 Beryllium-Copper Alloy
55158-44-6 Beryllium-Copper-Cobalt Alloy
37227-61-5 Beryllium-Nickel Alloy
542-88-1 Bis(chloromethyl)ether
154-93-8 Bischloroethylnitrosourea
8052-42-4 Bitumen
0-03-0 Bleomycins
0-04-0 Bracken Fern
75-27-4 Bromodichloromethane
106-99-0 Butadiene/ 1,3-
25013-16-5 Butylated hydroxyanisole
3068-88-0 Butyrolactone/ beta-
7440-43-9 Cadmium & Cd compounds
543-90-8 Cadmium Acetate
7789-42-6 Cadmium Bromide
513-78-0 Cadmium Carbonate
10108-64-2 Cadmium Chloride
542-83-6 Cadmium Cyanide
7790-79-6 Cadmium Fluoride
21041-95-2 Cadmium Hydroxide
7790-80-9 Cadmium Iodide
10325-94-7 Cadmium Nitrate
1306-19-0 Cadmium Oxide
14402-75-6 Cadmium Potassium Cyanide
13814-62-5 Cadmium Selenate
1306-24-7 Cadmium Selenide
10124-36-4 Cadmium Sulfate
1306-23-6 Cadmium Sulfide
1306-25-8 Cadmium Telluride
7790-85-4 Cadmium Tungstate (VI)
7778-44-1 Calcium Arsenate
10103-62-5 Calcium Arsenate
52740-16-6 Calcium Arsenite, 1:1
15194-98-6 Calcium Arsenite, 2:1
27152-57-4 Calcium Arsenite, 2:3
13765-19-0 Calcium Chromate
2425-06-1 Captafol
9000-07-1 Carageenan, degraded
0-05-0 Carbon Black extracts
56-23-5 Carbon Tetrachloride
409-21-2 Ceramic fiber
13454-78-9 Cesium Chromate
305-03-3 Chlorambucil
56-75-7 Chloramphenicol
57-74-9 Chlordane
12789-03-6 Chlordane (technical grade)
115-28-6 Chlorendic Acid
63449-39-8 Chlorinated Paraffins (C12 60% Chlorine)
494-03-1 Chlornaphazine
563-47-3 Chloro-2-methylpropene/ 3-
95-83-0 Chloro-o-phenylenediamine/ 4-
3165-93-3 Chloro-o-toluidine Hydrochloride/ p-
95-69-2 Chloro-o-toluidine/ p-
11097-69-1 Chlorodiphenyl (54% chlorine)
13909-09-6 Chloroethyl)-3-(4-methylcyclohexyl)-1-nitrosourea/ 1-(2-
13010-47-4 Chloroethyl)-3-cyclohexyl-1-nitrosourea/ 1-(2-
67-66-3 Chloroform
865-49-6 Chloroform-d
107-30-2 Chloromethylmethylether
95-57-8 Chlorophenol/ 2-
108-43-0 Chlorophenol/ 3-
106-48-9 Chlorophenol/ 4-
0-06-0 Chlorophenoxy herbicides
54749-90-5 Chlorozotocin
24613-89-6 Chromic Chromate
7440-47-3 Chromium (VI) & Cr6+ compounds
13007-92-6 Chromium Carbonyl
13930-94-4 Chromium Carbonyl
14986-48-2 Chromium Hexachloride
1333-82-0 Chromium Trioxide
12324-05-9 Chromium Trioxide
12324-08-2 Chromium Trioxide
14977-61-8 Chromyl Chloride
218-01-9 Chrysene
12001-29-5 Chrysotile
15663-27-1 Cisplatin
6358-53-8 Citrus Red No.2
65996-93-2 Coal tar pitch volatiles
8007-45-2 Coal tars
65996-89-6 Coal tars & extracts
7440-48-4 Cobalt
71-48-7 Cobalt (II) Acetate
6147-53-1 Cobalt (II) Acetate Tetrahydrate
7785-24-2 Cobalt (II) Arsenate
7789-43-7 Cobalt (II) Bromide
513-79-1 Cobalt (II) Carbonate
12069-68-0 Cobalt (II) Carbonate Hydroxide (1:1)
12602-23-2 Cobalt (II) Carbonate Hydroxide (2:3)
51839-24-8 Cobalt (II) Carbonate Hydroxide (2:3) Monohydrate
7646-79-9 Cobalt (II) Chloride
7791-13-1 Cobalt (II) Chloride Hexahydrate
13455-25-9 Cobalt (II) Chromate (III)
542-84-7 Cobalt (II) Cyanide
10026-17-2 Cobalt (II) Fluoride
544-18-3 Cobalt (II) Formate
21041-93-0 Cobalt (II) Hydroxide
15238-00-3 Cobalt (II) Iodide
13762-14-6 Cobalt (II) Molybdenum (VI) Oxide
61789-51-3 Cobalt (II) Naphthenate
10141-05-6 Cobalt (II) Nitrate
10026-22-9 Cobalt (II) Nitrate Hexahydrate
814-89-1 Cobalt (II) Oxalate
13455-36-2 Cobalt (II) Phosphate
13596-22-0 Cobalt (II) Potassium Sulfate
10124-43-3 Cobalt (II) Sulfate
1317-42-6 Cobalt (II) Sulfide
3017-60-5 Cobalt (II) Thiocyanate
1308-06-1 Cobalt (II, III) Oxide
917-69-1 Cobalt (III) Acetate
10026-18-3 Cobalt (III) Fluoride
1307-86-4 Cobalt (III) Hydroxide
1308-04-9 Cobalt (III) Oxide
12016-80-7 Cobalt (III) Oxide Monohydrate
13782-01-9 Cobalt (III) Potassium Nitrite
1307-96-6 Cobalt Monoxide
0-07-0 Coke oven emissions
12002-03-8 Copper (II) Acetoarsenite
0-08-0 Copper (II) Dichromate
13548-42-0 Copper Chromate
1308-09-4 Copper Chromate Oxide
18906-50-8 Copper Chromate Oxide
8001-58-9 Creosotes
120-71-8 Cresidine/ p-
12001-28-4 Crocidolite
135-20-6 Cupferron
10290-12-7 Cupric Arsenite
14901-08-7 Cycasin
50-18-0 Cyclophosphamide
79217-60-0 Cyclosporin
59865-13-3 Cyclosporin A
94-75-7 D/ 2,4-
4342-03-4 Dacarbazine
20830-81-3 Daunomycin
50-29-3 DDT
117-81-7 Di(2-ethylhexyl)phthalate
613-35-4 Diacetylbenzidine/ N,N\'-
39156-41-7 Diaminoanisole sulfate/ 2,4-
615-05-4 Diaminoanisole/ 2,4-
226-36-8 Dibenz[a,h]acridine
53-70-3 Dibenz[a,h]anthracene
224-42-0 Dibenz[a,j]acridine
192-65-4 Dibenzo[a,e]pyrene
189-64-0 Dibenzo[a,h]pyrene
189-55-9 Dibenzo[a,i]pyrene
191-30-0 Dibenzo[a,l]pyrene
194-59-2 Dibenzo[c,g]carbazole/ 7H-
96-12-8 Dibromo-3-chloropropane/ 1,2-
764-41-0 Dichloro-2-butene/ 1,4-
28434-86-8 Dichloro-4,4\'-diaminodiphenylether/ 3,3\'-
106-46-7 Dichlorobenzene/ p-
612-83-9 Dichlorobenzidine Dihydrochloride/ 3,3\'-
91-94-1 Dichlorobenzidine/ 3,3\'-
107-06-2 Dichloroethane/ 1,2-
542-75-6 Dichloropropene (technical grade)/ 1,3-
62-73-7 Dichlorvos
10210-68-1 Dicobalt Octacarbonyl
1464-53-5 Diepoxybutane
0-29-0 Diesel engine emissions
0-09-0 Diesel fuel #4
1615-80-1 Diethylhydrazine/ 1,2-
56-53-1 Diethylstilbestrol
64-67-5 Diethylsulfate
101-90-6 Diglycidyl resorcinol ether
94-58-6 Dihydrosafrole
117-10-2 Dihydroxyanthraquinone/ 1,8-
2973-10-6 Diisopropylsulfate
20325-40-0 Dimethoxybenzidine Dihydrochloride/ 3,3\'-
119-90-4 Dimethoxybenzidine/ 3,3\'-
55738-54-0 Dimethylamino)methylimino]-5-[2-(5-nitro-2-furyl)vinyl]-1,3,
60-11-7 Dimethylaminoazobenzene/ 4-
79-44-7 Dimethylcarbamoylchloride
4472-41-7 Dimethylformamide-d7/ N,N-
68-12-2 Dimethylformamide/ N,N-
57-14-7 Dimethylhydrazine/ 1,1-
540-73-8 Dimethylhydrazine/ 1,2-
77-78-1 Dimethylsulfate
513-37-1 Dimethylvinylchloride
42397-64-8 Dinitropyrene/ 1,6-
42397-65-9 Dinitropyrene/ 1,8-
25321-14-6 Dinitrotoluene
17647-74-4 Dioxane-d8/ 1,4-
123-91-1 Dioxane/ 1,4-
1937-37-7 Direct Black 38 (technical grade)
2602-46-2 Direct Blue 6 (technical grade)
16071-86-6 Direct Brown 95 (technical grade)
7778-43-0 Disodium Arsenate
10048-95-0 Disodium Arsenate Heptahydrate
2475-45-8 Disperse Blue 1
8012-54-2 Donovan\'s Solution
106-89-8 Epichlorohydrin
66733-21-9 Erionite
50-28-2 Estradiol-17
0-10-0 Estrogens, conjugated (indirect)
0-11-0 Estrogens, nonsteroidal and steroidal
53-16-7 Estrone
57-63-6 Ethinylestradiol
140-88-5 Ethyl Acrylate
74-96-4 Ethyl Bromide
106-93-4 Ethylene Dibromide
75-21-8 Ethylene Oxide
96-45-7 Ethylene Thiourea
151-56-4 Ethyleneimine
62-50-0 Ethylmethanesulfonate
50-00-0 Formaldehyde
3570-75-0 Formylhydrazino)-4-(5-nitro-2-furyl)thiazole/ 2-(2-
68476-31-3 Fuel oil #4
0-12-0 Fuel oil #5
68553-00-4 Fuel oil #6
531-82-8 Furathiazole
1303-00-0 Gallium Arsenide
8006-61-9 Gasoline
0-14-0 Glasswool
67730-11-4 Glu-P-1(2-Amino-6-methyldipyrido[1,2-a:3\',2\'-d]imidazole)
67730-10-3 Glu-P-2(2-Aminodipyrido[1,2-a:3\',2\'-d]imidazole)
765-34-4 Glycidaldehyde
126-07-8 Griseofulvin
0-15-0 Hematite underground mining
76-44-8 Heptachlor
1024-57-3 Heptachlor Epoxide
118-74-1 Hexachlorobenzene
87-68-3 Hexachlorobutadiene
608-73-1 Hexachlorocyclohexane (technical grade)
319-84-6 Hexachlorocyclohexane/ alpha-
319-85-7 Hexachlorocyclohexane/ beta-
67-72-1 Hexachloroethane
680-31-9 Hexamethylphosphoramide
302-01-2 Hydrazine
10034-93-2 Hydrazine Sulfate
122-66-7 Hydrazobenzene
193-39-5 Indeno[1,2,3-cd]pyrene
76180-96-6 IQ(2-Amino-3-methylimidazo[4,5-f]quinoline)
10294-52-7 Iron (III) Chromate
10294-53-8 Iron (III) Dichromate
9004-66-4 Iron Dextran Complex
0-16-0 Isopropyl alcohol manufacture
143-50-0 Kepone
303-34-4 Lasioscarpine
7439-92-1 Lead
301-04-2 Lead Acetate
13510-89-9 Lead Antimonate (V)
3687-31-8 Lead Arsenate
7645-25-2 Lead Arsenate
7784-40-9 Lead Arsenate
10102-48-4 Lead Arsenate
10031-13-7 Lead Arsenite
13424-46-9 Lead Azide
10214-39-8 Lead Borate
34018-28-5 Lead Bromate
10031-22-8 Lead Bromide
819-73-8 Lead Butyrate
10294-47-0 Lead Chlorate
7758-95-4 Lead Chloride
7758-97-6 Lead Chromate
8049-64-7 Lead Chromate
18454-12-1 Lead Chromate Oxide
1309-60-0 Lead Dioxide
7783-46-2 Lead Fluoride
811-54-1 Lead Formate
25808-74-6 Lead Hexafluorosilicate
1311-11-1 Lead Hydroxide
10294-58-3 Lead Hypophosphite
10101-63-0 Lead Iodide
10190-55-3 Lead Molybdate (VI)
1317-36-8 Lead Monoxide
10099-74-8 Lead Nitrate
7446-27-7 Lead Phosphate
7446-15-3 Lead Selenate
7488-51-9 Lead Selenite
1314-27-8 Lead Sesquioxide
10101-94-7 Lead Sodium Thiosulfate
7446-14-2 Lead Sulfate
1314-87-0 Lead Sulfide
1314-91-6 Lead Telluride
7783-59-7 Lead Tetrafluoride
1314-41-6 Lead Tetraoxide
592-87-0 Lead Thiocyanate
7759-01-5 Lead Tungstate (VI)
10099-79-3 Lead Vanadate (V)
1319-48-8 Leadhillite
58-89-9 Lindane
0-17-0 Lithium Bichromate Dihydrate
7789-01-7 Lithium Chromate
14307-35-8 Lithium Chromate
13843-81-7 Lithium Dichromate
632-99-5 Magenta manufacture
10103-50-1 Magnesium Arsenate
13423-61-5 Magnesium Chromate
0-18-0 Marine diesel fuel
68006-83-7 MeA-alpha-C(2-Amino-3-methyl-9H-pyrido[2,3-b]indole)
71-58-9 Medroxyprogesterone acetate
148-82-3 Melphalan
13444-75-2 Mercury (II) Chromate
7789-10-8 Mercury (II) Dichromate
531-76-0 Merphalan
72-33-3 Mestranol
484-20-8 Methoxypsoralen/ 5-
298-81-7 Methoxypsoralen/ 8-
74-88-4 Methyl Iodide
129-15-7 Methyl-1-nitroanthraquinone/ 2-
70-25-7 Methyl-N\'-nitro-N-nitrosoguanidine/ N-
590-96-5 Methylazoxymethanol
592-62-1 Methylazoxymethanol Sulfate
3697-24-3 Methylchrysene/ 5-
75-09-2 Methylene Chloride
1665-00-5 Methylene-d2 Chloride
101-14-4 Methylenebis(2-chloroaniline)/ 4,4\'-
838-88-0 Methylenebis(2-methylaniline)/ 4,4\'-
13552-44-8 Methylenedianiline Dihydrochloride/ 4,4\'-
101-77-9 Methylenedianiline/ 4,4\'-
60-34-4 Methylhydrazine
66-27-3 Methylmethanesulfonate
56-04-2 Methylthiouracil
443-48-1 Metronidazole
101-61-1 Michler\'s Base
90-94-8 Michler\'s Ketone
0-28-0 Mineral Oil Mist
8002-05-9 Mineral Oils
2385-85-5 Mirex
50-07-7 Mitomycin C
8005-36-5 Molybdenum Orange
12213-61-5 Molybdenum Orange
12656-85-8 Molybdenum Orange
12709-98-7 Molybdenum Orange
64523-06-4 Molybdenum Orange
315-22-0 Monocrotaline
3031-51-4 Morpholinomethyl)-3-[(5-nitrofurfurylidene)amino]-2-oxazolid
505-60-2 Mustard Gas
55-98-1 Myleran
3771-19-5 Nafenopin
134-32-7 Naphthylamine/ alpha-
91-59-8 Naphthylamine/ beta-
16565-95-0 Neodymium Chromate
16569-87-2 Neodymium Chromate Heptahydrate
13478-00-7 Nickel (II) Nitrate Hexahydrate
373-02-4 Nickel Acetate
3264-82-2 Nickel Acetylacetonate
13462-88-9 Nickel Bromide
3333-67-3 Nickel Carbonate
12607-70-4 Nickel Carbonate Hydroxide
13463-39-3 Nickel Carbonyl
7718-54-9 Nickel Chloride
557-19-7 Nickel Cyanide
13478-93-8 Nickel Dimethylglyoxime
10028-18-9 Nickel Fluoride
3349-06-2 Nickel Formate
12054-48-7 Nickel Hydroxide
12125-56-3 Nickel Hydroxide
13462-90-3 Nickel Iodide
7440-02-0 Nickel metal powder & Ni compounds
13138-45-9 Nickel Nitrate
547-67-1 Nickel Oxalate
1313-99-1 Nickel Oxide
13520-61-1 Nickel Perchlorate Hexahydrate
10381-36-9 Nickel Phosphate
1314-06-3 Nickel Sesquioxide
12035-72-2 Nickel Subsulfide
13770-89-3 Nickel Sulfamate
7786-81-4 Nickel Sulfate
1271-28-9 Nickelocene
61-57-4 Niridazole
139-13-9 Nitrilotriacetic Acid
15467-20-6 Nitrilotriacetic Acid, disodium salt
23255-03-0 Nitrilotriacetic Acid, disodium salt, hydrate
18994-66-6 Nitrilotriacetic Acid, monosodium salt
10042-84-9 Nitrilotriacetic Acid, sodium salt
5064-31-3 Nitrilotriacetic Acid, trisodium salt
18662-53-8 Nitrilotriacetic Acid, trisodium salt, hydrate
602-87-9 Nitroacenaphthene/ 5-
92-93-3 Nitrobiphenyl/ 4-
7496-02-8 Nitrochrysene/ 6-
1836-75-5 Nitrofen (technical grade)
607-57-8 Nitrofluorene/ 2-
555-84-0 Nitrofurfurylidene)amino]-2-imidazolidinone/ 1-[(5-
51-75-2 Nitrogen Mustard
55-86-7 Nitrogen Mustard Hydrochloride
302-70-5 Nitrogen Mustard N-oxide
79-46-9 Nitropropane/ 2-
5522-43-0 Nitropyrene/ 1-
57835-92-4 Nitropyrene/ 4-
759-73-9 Nitroso-N-ethylurea/ N-
684-93-5 Nitroso-N-methylurea/ N-
615-53-2 Nitroso-N-methylurethane/ N-
924-16-3 Nitrosodi-n-butylamine/ N-
621-64-7 Nitrosodi-n-propylamine/ N-
1116-54-7 Nitrosodiethanolamine/ N-
55-18-5 Nitrosodiethylamine/ N-
62-75-9 Nitrosodimethylamine/ N-
64091-91-4 Nitrosomethylamino)-1-(3-pyridyl)-1-butanone/ 4-(N-
60153-49-3 Nitrosomethylamino)propionitrile/ 3-(N-
10595-95-6 Nitrosomethylethylamine/ N-
4549-40-0 Nitrosomethylvinylamine/ N-
59-89-2 Nitrosomorpholine/ N-
16543-55-8 Nitrosonornicotine/ N\'-
100-75-4 Nitrosopiperidine/ N-
930-55-2 Nitrosopyrrolidine/ N-
13256-22-9 Nitrososarcosine/ N-
68-22-4 Norethisterone
303-47-9 Ochratoxin
2646-17-5 Oil Orange SS
101-80-4 Oxydianiline/ 4,4\'-
434-07-1 Oxymetholone
569-61-9 p-Rosaniline
794-93-4 Panfuran S (containing dihydroxymethylfuratrizine)
30525-89-4 Paraformaldehyde
67774-32-7 PBBs
1336-36-3 PCBs
87-86-5 Pentachlorophenol
127-18-4 Perchloroethylene
62-44-2 Phenacetin
0-20-0 Phenacetin contained in analgesic mixtures
94-78-0 Phenazopyridine
136-40-3 Phenazopyridine Hydrochloride
50-06-6 Phenobarbital
63-92-3 Phenoxybenzamine Hydrochloride
122-60-1 Phenyl glycidyl ether
135-88-6 Phenyl-beta-naphthylamine/ N-
95-54-5 Phenylenediamine/ o-
100-63-0 Phenylhydrazine
57-41-0 Phenytoin
3564-09-8 Ponceau 3R
3761-53-3 Ponceau MX
7784-41-0 Potassium Arsenate
13464-35-2 Potassium Arsenite
7758-01-2 Potassium Bromate
7789-00-6 Potassium Chromate
7778-50-9 Potassium Dichromate, as Cr6+
671-16-9 Procarbazine
366-70-1 Procarbazine Hydrochloride
57-83-0 Progesterone
0-21-0 Progestins
1120-71-4 Propane Sultone/ 1,3-
57-57-8 Propiolactone/ beta-
75-56-9 Propylene Oxide
75-55-8 Propyleneimine
51-52-5 Propylthiouracil
50-55-5 Reserpine
0-22-0 Residual (heavy) fuel oils
68476-33-5 Residual fuel oil
0-23-0 Rockwool
13446-72-5 Rubidium Chromate
13446-73-6 Rubidium Dichromate
81-07-2 Saccharin
6485-34-3 Saccharin, calcium salt
128-44-9 Saccharin, sodium salt
94-59-7 Safrole
16565-96-1 Samarium Chromate
58569-17-8 Samarium Chromate Dihydrate
58477-24-0 Samarium Chromate Heptahydrate
7446-34-6 Selenium Sulfide
68308-34-9 Shale Oils
1317-95-9 Silica
14464-46-1 Silica
14808-60-7 Silica
15468-32-3 Silica
7784-01-2 Silver Chromate
7784-02-3 Silver Dichromate
0-24-0 Slagwool
7631-89-2 Sodium Arsenate
15120-17-9 Sodium Arsenate
7784-46-5 Sodium Arsenite
7775-11-3 Sodium Chromate
10588-01-9 Sodium Dichromate
12018-32-5 Sodium Dichromate
132-27-4 Sodium o-Phenylphenate
0-30-0 Solar Radiation
0-25-0 Soots
10048-13-2 Sterigmatocystin
18883-66-4 Streptozotocin
7789-06-2 Strontium Chromate
54322-60-0 Strontium Chromate
96-09-3 Styrene Oxide
100-42-5 Styrene, Monomer
95-06-7 Sulfallate
0-35-0 Sulfuric Acid Mist
0-34-0 Sunlamps and sunbeds, use of
93-76-5 T/ 2,4,5-
14807-96-6 Talc (containing asbestos fibers)
1746-01-6 TCDD
58-22-0 Testosterone
17786-31-1 Tetracobalt Dodecacarbonyl
509-14-8 Tetranitromethane
13473-75-1 Thallium Chromate
15190-21-3 Thallium Chromate
22534-09-4 Thallium Chromate
13453-35-5 Thallium Dichromate
52-24-4 Thio tepa
62-55-5 Thioacetamide
139-65-1 Thiodianiline/ 4,4\'-
62-56-6 Thiourea
1314-20-1 Thorium Dioxide
38455-77-5 Tin (IV) Chromate
0-26-0 Tobacco products, smokeless
0-27-0 Tobacco smoke
119-93-7 Tolidine/ o-
26471-62-5 Toluene Diisocyanate
95-80-7 Toluene-2,4-diamine
584-84-9 Toluene-2,4-diisocyanate
91-08-7 Toluene-2,6-diisocyanate
636-21-5 Toluidine Hydrochloride/ o-
95-53-4 Toluidine/ o-
106-49-0 Toluidine/ p-
8001-35-2 Toxaphene
14567-73-8 Tremolite [asbestiform]
299-75-2 Treosulphan
817-09-4 Trichloromethine
95-95-4 Trichlorophenol/ 2,4,5-
88-06-2 Trichlorophenol/ 2,4,6-
126-72-7 Tris(2,3-dibromopropyl)phosphate
64070-83-3 Trisodium Arsenate Heptahydrate
62450-06-0 Trp-P-1(3-Amino-1,4-dimethyl-5H-pyrido[4,3-b]indole)
75104-43-7 Trp-P-1(3-Amino-1,4-dimethyl-5H-pyrido[4,3-b]indole) acetate
68808-54-8 Trp-P-1(3-Amino-1,4-dimethyl-5H-pyrido[4,3-b]indole) monoace
62450-07-1 Trp-P-2(3-Amino-1-methyl-5H-pyrido[4,3-b]indole)
72254-58-1 Trp-P-2(3-Amino-1-methyl-5H-pyrido[4,3-b]indole) acetate
72-57-1 Trypan Blue
0-31-0 Ultraviolet A Radiation
0-32-0 Ultraviolet B Radiation
0-33-0 Ultraviolet C Radiation
66-75-1 Uracil Mustard
51-79-6 Urethane
593-60-2 Vinyl Bromide
75-01-4 Vinyl Chloride
106-87-6 Vinyl Cyclohexene Dioxide
100-40-3 Vinyl Cyclohexene/ 4-
1300-73-8 Xylidine (mixed isomers)
1308-13-0 Zinc Chromate
1328-67-2 Zinc Chromate
13530-65-9 Zinc Chromate
14675-41-3 Zinc Chromate
37300-23-5 Zinc Chromate
57486-12-1 Zinc Chromate
12206-12-1 Zinc Chromate Hydroxide
15930-94-6 Zinc Chromate Hydroxide
66516-58-3 Zinc Chromate Hydroxide
11103-86-9 Zinc Potassium Chromate (Hydroxide)
12527-08-1 Zinc Potassium Chromate (Hydroxide)
37809-34-0 Zinc Potassium Chromate (Hydroxide)
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