◈ MATERIAL SAFETY DATA SHEET
SECTION 1. IDENTIFICATION
PRODUCT NAME : Maleic Anhydride
COMPANY : KOREA PTG CO., Ltd.
489-3, Yongyeon-Dong, Nam-Ku, Ulsan, Korea
EMERGENCY INFORMATION : Tel 82-52-257-5240
Fax 82-52-257-5246
SYNONYMS : *Toxilic Anhydride
*Cis-Butenedioic Anhydride
*2,5-Furandione
*2,5-Dihydrofuran-2,5-Dione
IMO/UN DESIGNATION
9.0/2215
FORMULA
(:CH.CO)2O
DOT ID NO.
2215
CAS REGISTRY NO.
108-31-6
SECTION 2. PHYSICAL DATA
BOILING POINT, at
760mm Hg
202℃(395℉)
MELTING/FREEZING POINT
52.8℃(127℉)
VAPOR PRESSURE
SPECIFIC GRAVITY
1.43 at 15℃
20℃-0.16 mmHg
44℃-1.00 mmHg
(Solid)
VAPOR DENSITY
3.38 (Air=1)
77℃-6.2 mmHg
SOLUBILITY IN WATER
Hydrolizes slowly
CRYSTALLINE FORMS
Needles, Rhombic
APPEARANCE
White solid of pastille
Form or water-liquid
COLOR
Colorless
ODOR
Acrid; choking
SECTION 3.
HAZARDOUS COMPONENT
MATERIAL(S)
Maleic Anhydride
CAS NO.
108-31-6
APPROXIMATE %
100
SECTION 4. HAZARDOUS REACTIVITY
REACTIVITY WITH WATER
Hot water may cause frothing. Reaction with cold water is slow and non-hazardous.
REACTIVITY WITH
No reaction
COMMON MATERIALS
STABILITY DURING TRANSPORT
Stable
NEUTRALIZING AGENTS FOR ACIDS AND CAUSTICS
Solid spills can usually be recovered before any significant reaction with water occurs.
Flush area of spill with water.
POLYMERIZATION.
Very unlikely at ordinary temperatures, even in the molten state.
SECTION 5. FIRE AND EXPLOSION DATA
FLASH POINT
FLAMMABLE LIMITS IN AIR,% BY VOL
Open cup 110℃ (230℉)
Closed cup 102℃ (215℉)
AUTOIGNITION
TEMPERATURE
Lower 1.4%
Upper 7.1%
477℃ (890℉)
FIRE AND EXPLOSION HAZARDS
Maleic anhydride is a combustible solid having a flash point of 102℃. Care must be
exercised in handling and storage to keep the maleic anhydride away from flame or
sparks since its dust and the vapors from molten product are flammable.
Maleic anhydride decomposes(decarboxylation and polymerization) in the presence of
the alkali metals or amines at temperatures above 150℃. The concentration of theses
impurities necessary to trigger the decomposition is as low as 200ppm. The
exothermic reaction will take place rapidly and the gas which is evolved may cause
equipment to rupture unless relief mechanisms are provided. The Manufacturing
Chemists Association Case History #622 relates in detail on incident in which sodium
hydroxide caused and incident of this type to occur.
Use of sodium or potassium carbonate or hydroxide or aqueous ammonia is not
recommended for washing equipment which may later contain hot maleic anhydride
because of possible explosions. However, if this washing method is used it is
imperative that any residual alkali be completely washed from the equipment.
A successful procedure which has been used is, after the last wash is drained, to
neutralize with sulfuric acid and then flush clean with water.
FIRE EXTINGUISHING AGENT
Carbon dioxide or dry chemical
SECTION 6. HEALTH HAZARDS INFORMATION
THRESHOLD LIMIT VALUE
0.25 ppm
TOXICITY BY INGESTION
Grade 2 : LD 50 = 0.5 to 5g/kg
ACUTE TOXICITY
Systemic Effects
Maleic anhydride possesses little acute systemic toxic properties.
Oral feedings of malefic acid show a low order of toxicity.
No cases of systemic effects have been reported.
Low Effects
Malefic anhydride does not usually causes an immediate burning sensation upon
contact with the skin, especially if the skin is dry.
If not removed by washing, it will cause reddening and occasionally blistering , if the
exposure is prolonged and severe.
Malefic anhydride dust and vapors are exceedingly irritating and severe acute
exposures are not voluntarily tolerated.
Upon inhalation of dust or vapors, coughing and sneezing, together with burning and
irritation of the throat, may occur.
The eyes are particularly sensitive to the dust and vapors.
Marked irritation of the conjunctive and corneal swelling may occur.
. CHRONIC TOXICITY
Systemic Effects
No systemic effects have been recognized from repeated exposure.
Local Effects
Contact dermatitis may result from repeated exposure to malefic anhydride in the dry
or vapor state.
This is usually a chronic irritative type. although skin sensitivity can occur. Chronic
eye irritation may also occur.
FIRST AID
General Principles
First aid should be started
anhydride.
at once in
all cases of massive contact with malefic
Contact with skin and mucous membranes
If dust or vapor contacts the skin, it should be removed by prompt washing with soap
and water. Clothing and shoes contaminated with malefic anhydride should be
removed and not reworn until thoroughly washed. When molten malefic anhydride
comes in contact with the skin, a severe thermal burn will result. The malefic
anhydride will solidify and form a crust over the burned area. This crust should be
removed manually and first-aid treatment for thermal burns carried out.
Contact with eyes
If even small quantities of malefic anhydride dust have entered the eyes or if they
have been exposed to strong concentrations of the vapor, they should be irrigated
immediately with copious quantities of water for at least 15 minutes. Medical
attention should be obtained promptly.
Taken Internally
A physician should be called at once. Vomiting should be caused by giving large
quantities of warm salt solution or by having the patient place his finger in the back of
his throat. When retching and vomiting begin, place the patient face down with his
head lower than lips to prevent the vomitus from entering the lungs. Keep the patient
warm and comfortable. Oxygen may be administered as directed by the physician, if
symptoms warrant it.
Inhalation
A worker who has been overcome by malefic anhydride must be carried at once into
an uncontaminated atmosphere and effective artificial respiration initialed
immediately if berathing has ceased.
A physician should be called at once.
SECTION 6-PROTECTION INFORMATION
GENERALLY APPLICABLE CONTROL MEASURES
All rooms in which malefic anhydride is stored or handled should be provided with
adequate ventilation. Explosion venting should be provided in the general
construction of equipment and buildings in which flammable vapors or dusts are liable
to concentrate.
PERSONAL PROTECTIVE EQUIPMENT
Chemical goggles and face shield, rubber gloves and boots, coveralls or rubber apron
as appropriate for routine chemical operation.
SECTION 7-DISPOSAL INFORMATION
All Local regulations concerning waste disposal to streams, municipal treatment plans
or by burying should be ascertained and complied with.
SECTION 8-SHIPPING INFORMATION
Malefic anhydride is not subject to interstate Commerce Commission Regulations for
the purpose of transportation.
SECTION 9-OTHER INFORMATION
SHIPPING CONTAINERS
Multiwall bags, fibre drums, metal drums, tank cares and tank trucks.
STORAGE
Vapors escaping from molten malefic anhydride stored within buildings should be
vented to safe location.
Storage tanks for malefic anhydride should be provided with a vertical steam coil or
lance in addition to the usual heating coils or steam jackets.
The storage tank should be equipped at the top with a heated vent.
HAZARD CLASSIFICATION
Code of Federal Regulations
ORM-A
NAS Hazard Rating for Bulk Water Transportation :
Category
Rating
Fire
1
Health
Vapor irritant
2
Liquid or Solid irritant
2
Poisons
1
Water Pollution
Human Toxicity
2
Aquatic Toxicity
Aesthetic Effect
Reactivity
Other chemicals
Water
Self Reaction
NFPA Hazard Classification :
Category
Health Hazard (Blue)
Flammability
Reactivity
2
1
3
2
0
Classification
3
1
1