Standard Operating Procedures
Laboratory Specific
Chemical: Tamoxifen
Please fill out the form completely. Print a copy and insert into your
Laboratory Safety Manual and Chemical Hygiene Plan.
Refer to instructions for assistance.
_____________________________________________________________________________
Department:________________________
Date when SOP was written:_______
Date when SOP was approved by the lab supervisor: ___________________
Principal Investigator:___________________________________________________
Internal Laboratory Safety Coordinator/Lab Manager:___________________________________
Laboratory Phone:____________________ Office Phone:_____________________
Emergency Contact:____________________________________________________
(Name and Phone Number)
Location(s) covered by this SOP:__________________________________________
(Building/Room Number)
_____________________________________________________________________________
Type of SOP:
Process
Hazardous Chemical
Hazardous Class
Purpose
(State the procedure the specific chemical is used for in lab/the purpose of the chemical)
Physical & Chemical Properties/Definition of Chemical Group
Chemical Name: (Z)-4-(1-[4-(Dimethylaminoethoxy)phenyl]-2-phenyl-1-butenyl)phenol, (Z)-4-OHT, trans-4Hydroxytamoxifen
CAS#:
10540-29-1
Class:
Carcinogen/Reproductive toxin
Molecular formula:
C26H29NO / C6H5C(C2H5)=C(C6H5)C6H4OCH2CH2N(CH3)2
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Melting Point:
97-98°C (207-208°F)
Molecular weight:
371.51g
Form:
solid / solid crystalline powder
Solubility:
Volatility:
Other:
95% ethanol: soluble20 mg/mL
not available
Laboratory operations should be conducted in a fume hood
Potential Hazards/Toxicity
Tamoxifen has been classified as carcinogenic to humans by IARC and NTP.
LD50 Oral:
4100 mg/kg [Rat]
Although little data is available, tamoxifen may be harmful if inhaled, swallowed, or absorbed through the
skin. It can cause irritation of the skin, eye, and respiratory tract.
Toxic Effects:
Tamoxifen is a toxic substance.
Acute Effects:
Hazardous in case of skin contact (irritant), of eye contact (irritant), of
ingestion, of inhalation.
Chronic Effects:
CARCINOGENIC EFFECTS: Not available. MUTAGENIC EFFECTS:
Not available. TERATOGENIC EFFECTS: Not available
DEVELOPMENTAL TOXICITY: Classified Reproductive
system/toxin/female, Development toxin [POSSIBLE]. Repeated or
prolonged exposure is not known to aggravate medical conditions.
Personal Protective Equipment (PPE)
Wear double nitrile gloves, full-length lab coat, and safety glasses/face shield in addition to long pants
and closed-toe shoes.
Always wash hands after removing gloves following handling tamoxifen.
Engineering Controls
Always handle tamoxifen inside a certified chemical fume hood or a ducted biosafety cabinet.
First Aid Procedures
Skin & Eye Exposure:
Minor skin contact requires washing with water. Soaking or flushing
contaminated areas of the skin with water for periods up to 15 minutes is
required if a large area comes into contact with the chemical, or if
prolonged contact occurs. Contaminated clothing may hold the
chemicals in contact with the skin without being immediately noticed so
remove clothing immediately and wash thoroughly before use.
In the event of eye contact, the eye should be immediately be flushed
with water. If the chemical is very irritating, it is likely that the affected
individual will require assistance to hold the eye open during the flushing.
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Ingestion:
DO NOT induce vomiting, give milk, activated charcoal or water if
conscious, and get medical attention immediately.
Inhalation:
Remove rapidly to clean air. Administer rescue breathing if necessary
and call emergency services. Seek medical attention if needed.
Special Handling and Storage Requirements
Designated Areas

The chemical solid or solutions will be made in chemical fume hoods and will be stored in clearly
marked containers. Tamoxifen liquid solutions (10 mg/ml dissolved in corn oil) will be stored at
room temperature in clearly marked secondary containers. Liquid waste will be collected for
disposal by EH&S.

All chemicals containing tamoxifen must be secondarily contained with proper signage.

Signage is required for the container, designated work area and storage location. Sign wording
must state the following:
“DANGER, CANCER HAZARD, CARCINOGEN”
Spill and Accident Procedure
Chemical Spill Dial 911 and x59797
Spill – Help contaminated or injured persons. Evacuate the spill area. Avoid breathing vapors.
Eliminate sources of ignition if the chemical is flammable. If possible, confine the spill to a small area
using a spill kit or absorbent material. Keep others from entering contaminated area (e.g., use caution
tape, barriers, etc.).
Small (<1 L) – If you have training, you may assist in the clean-up effort. Use appropriate personal
protective equipment and clean-up material for chemical spilled. Double bag spill waste in clear plastic
bags, label and take to the next chemical waste pick-up.
Large (>1 L) – Dial 911 (or 310-825-1491 from cell phone) and EH&S at x59797 for assistance.
Chemical Spill on Body or Clothes – Remove clothing and rinse body thoroughly in emergency
shower for at least 15 minutes. Seek medical attention. Notify supervisor and EH&S at x59797
immediately.
Chemical Splash Into Eyes – Immediately rinse eyeball and inner surface of eyelid with water for
15 minutes by forcibly holding the eye open. Seek medical attention. Notify supervisor and EH&S at
x59797 immediately.
Medical Emergency Dial 911 or x52111
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Life Threatening Emergency, After Hours, Weekends And Holidays – Dial 911 (or 310825-1491 from cell phone) or contact the Ronald Reagan UCLA Medical Center (emergency room)
directly at x52111 (located at 757 Westwood Plaza, enter from Gayley Avenue). Note: All serious injuries
must be reported to EH&S at x59797 within 8 hours.
Non-Life Threatening Emergency– Go to the Occupational Health Facility (OHF), x56771, CHS
room 67-120 (This is on the 6th floor, 7th corridor, room 120. Enter through the School of Dentistry on
Tiverton Drive and proceed to the “O” elevator to the 6th floor.)Hours: M - F, 7:30 a.m. to 4:30 p.m. At all
other times report to Ronald Regan UCLA Medical Center (emergency room) at x52111. Note: All serious
injuries must be reported to EH&S at x59797 within 8 hours.
Needle stick/puncture exposure (as applicable to chemical handling procedure)– Wash the
affected area with antiseptic soap and warm water for 15 minutes. For mucous membrane exposure,
flush the affected area for 15 minutes using an eyewash station. Page the needle stick nurse by dialing
231 from a campus phone, enter 93333 when prompted and then enter your extension. Hours: M – F,
8:00 a.m. to 4:00 p.m. At all other times report to Ronald Regan UCLA Medical Center (emergency room)
at x52111. Note: All needle stick/puncture exposures must be reported to EH&S at x59797 within 8 hours.
Decontamination/Waste Disposal Procedure
No waste streams containing tamoxifen shall be disposed of in sinks. Decontaminate work space with 7075% ethanol. Wash hands and arms with soap and water after finished. Contaminated pipet tips,
eppendorf tubes, and gloves should be discarded as hazardous waste according to UCLA EH&S waste
disposal procedures. Excess liquid will be stored in designated and clearly marked waste containers, and
will also be disposed of via EH&S.
Waste containers containing tamoxifen must be labeled:
“DANGER, CANCER HAZARD”
Material Safety Data Sheet (MSDS) Location
(State the location of MSDS)
Hardcopy or electronic copy must be available.
Online MSDS can be accessed at http://msds.ehs.ucla.edu.
Protocol/Procedure
(Add specific description of procedure.)
Note: Any deviation from this SOP requires written approval from PI.
Documentation of Training (signature of all users is required)

Prior to conducting any work with tamoxifen, designated personnel must provide training to his/her
laboratory personnel specific to the hazards involved in working with this substance, work area
decontamination, and emergency procedures.
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
The Principal Investigator must provide his/her laboratory personnel with a copy of this SOP and a
copy of the tamoxifen MSDS provided by the manufacturer.

The Principal Investigator must ensure that his/her laboratory personnel have attended appropriate
laboratory safety training or refresher training within the last two years.

I have read and understand the content of this SOP:
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