Product ID:OSMIUM TETROXIDE
MSDS Date:09/13/1989
FSC:6550
NIIN:00F027861
MSDS Number: BRBFP

POLYSCIENCES INC

400 VALLEY RD
WARRINGTON, PA 18976-2522
US

Emergency Phone: 215-343-6484

Info Phone: 215-343-6484

Cage: 9C365

POLYSCIENCES INC

WARRINGTON, PA 18976 US

Telephone: 215-313-6484

Cage: 9C365

OSMIUM TETROXIDE-OS

CAS: 20816-12-0

RTECS: RN1140000

OSHA PEL 0.002PPM/0.0006STEL

ACGIH TLV: .0002PPM/.0006STEL93

EPA Report Quantity: 1000 LBS

DOT Report Quantity: 1000 LBS

Routes of Entry: Inhalation:YES Skin:YES Ingestion:YES
Reports of Carcinogenicity:NTP:NO IARC:NO OSHA:NO
Health Hazards Acute and Chronic:EYES: IRRITATION W/EFFECTS TO
EYESIGHT. LACHRYMATING & PRODUCES HALO EFFECT AROUND BRIGHT LIGHTS.
SKIN: STAINS BLACK, DERMATITIS, BURNS. INHALATION: HEADACHE, COUGH.
Explanation of Carcinogenicity:NONE
Effects of Overexposure:MAY CAUSE SERIOUS ILLNESS OR DEATH. MAY HAVE
SEVERE EFFECTS ON FERTILITY. INHALATION: MAY DAMAGE LUNGS.

First Aid:SKIN: WASH AFFECTED AREA W/COPIOUS AMOUNTS OF WATER. EYES:
FLUSH W/WATER FOR AT LEAST 15 MINS. INHALATION: REMOVE TO FRESH
AIR. GIVE OXYGEN OR ARTIFICIAL RESPIRATION, AS NEEDED. INGESTION:
DRINK 1 OR 2 GLASSES OF WATER. OBTAIN MEDICAL ATTENTION IN ALL
CASES.

Extinguishing Media:WATER, CO2, DRY CHEMICAL POWDER, FOAM
Fire Fighting Procedures:FIREFIGHTERS MUST WEAR SELF-CONTAINED
BREATHING APPARATUS & FULL PROTECTIVE EQUIPMENT.
Unusual Fire/Explosion Hazard:OSMIUM FUMES PRODUCED BY FIRE ARE
EXTREMELY TOXIC.

Spill Release Procedures:EVACUATE AREA. WEAR SELF-CONTAINED BREATHING
APPARATUS, RUBBER BOOTS & GLOVES. WASH AREA W/SODIUM BISULFITE TO
CONVERT TO OSMIUM METAL. SWEEP UP & DISPOSE OF IN TOXIC WASTE DRUM.
Neutralizing Agent:POTASSIUM HYDROXIDE. SEE SUPPLEMENTAL DATA.

Handling and Storage Precautions:STORE AT ROOM TEMPERATURE. KEEP
STORAGE CONTAINER TIGHTLY CLOSED.
Other Precautions:AVOID PROLONGED OR FREQUENT EXPOSURE.

Respiratory Protection:OSHA/MHSA APPROVED RESPIRATOR.
Ventilation:LOCAL EXHAUST, MECHANICAL, HOOD
Protective Gloves:RUBBER
Eye Protection:SAFETY GOGGLES
Other Protective Equipment:SAFETY SHOWER/EYEWASH STATIONS. PROTECTIVE
CLOTHING.
Work Hygienic Practices:WASH HANDS THOROUGHLY AFTER HANDLING.
Supplemental Safety and Health
COLLECT IN GLASS, DISOLVE W/DILUTED POTASSIUM HYDROXIDE & FILTER
W/GLASS FUNNEL. ADD SATURATED POTASSIUM HYDROXIDE SOLUTION TO
FILTRATE. PRECIPITATE SOLUTION W/ETHANOL 100ML TO 1L SOLUTION.
PRECIPITA TION COMPLETED WHEN LIQUID IS WATER CLEAR (OSMIUM FREE).
DISCARD. PACK POTASSIUM OSMIUM FROM FILTER IN AIR-TIGHT FLASK.

Boiling Pt:B.P. Text:131C
Melt/Freeze Pt:M.P/F.P Text:41C
Spec Gravity:4.906
Solubility in Water:COMPLETE
Appearance and Odor:PALE YELLOW CRYSTALLINE MASS

Stability Indicator/Materials to Avoid:YES
ORGANIC VAPORS, POWERFUL OXIDIZING AGENTS.
Hazardous Decomposition Products:TOXIC FUMES OF OSMIUM.

Waste Disposal Methods:RUN OFF MAY POLLUTE STREAMS, LAKES OR DRINKING
WATER SUPPLIES. RESIDUES SHOULD BE CONTAINED IN POLYETHYLENE,
POLYPROPYLENE OR OTHER INERT CONTAINERS & HELD FOR REFINING.

Disclaimer (provided with this information by the compiling agencies):
This information is formulated for use by elements of the Department
of Defense. The United States of America in no manner whatsoever,
expressly or implied, warrants this information to be accurate and
disclaims all liability for its use. Any person utilizing this
document should seek competent professional advice to verify and
assume responsibility for the suitability of this information to their
particular situation.