Product ID:O-C-303,CHROMIUM TRIOXIDE,TECHNICAL
MSDS Date:01/01/1985
FSC:6810
NIIN:00-264-6517
MSDS Number: BDQMJ

Emergency Phone: NONE

Cage: KO981

Telephone: 214-922-2700/216-352-7245

Cage: 85186

CHROMIUM (VI) OXIDE

CAS: 1333-82-0

RTECS: GB6650000

Fraction By Weight: 99.5%

OSHA PEL C, 0.1 MG/M3 (CRO3)

ACGIH TLV: 0.05 MG/M3(CR); 8990

Effects of Overexposure:IF INHALED AS DUST OR MIST MAY IRRITATE
RESPIRATORY SYSTEM.IRRITATE MUCOUS MEMBRANES & SKIN,EYES.

First Aid:SKIN CONTACT:FLUSH SKIN WITH WATER.CLOTHING PENETRATED WITH
DUST OR SOLUTIONS SHOULD BE REMOVED PROMPTLY & WASHED BEFORE
RE-USE.EYES:IMMEDIATELY FLUSH EYES WITH PLENTY OF WATER FOR AT
LEAST 15 MINUTES .CALL DOCTOR.INHALATION:IRRIGATE NOSE &MOUTH(H*2O

Flash Point:N.A.
Extinguishing Media:CHROMIC ACID IS NOT COMBUSTIBLE.WATER,CO*2,DRY
CHEMICAL
Fire Fighting Procedures:NONE
Unusual Fire/Explosion Hazard:CHROMIC ACID IS NOT COMBUSTIBLE,BUT MAY
IGNITE OXIDIZABLE SUBSTANCES.

Spill Release Procedures:THE SOLIDS SHOULD BE SHOVELED UP.AREA SHOULD
BE FLUSHED WITH WATER.REMAINING TRACES SHOULD BE NEUTRALIZED WITH
SODA ASH.DISSOLVED SOLIDS MAY THEN BE TREATED BY APPROPRIATE WASTE
DISPOSAL METHOD

Handling and Storage Precautions:DO NOT STORE IN HUMID AIR.DO NOT STORE
IN CLOSED PROXIMITY TO EASILY OXIDIZABLE MATERIALS(YELLOW
LABEL).AVOID CONTACT WITH SKIN OR EYES.AVOID GREASES.
Other Precautions:AVOID BREATHING MISTS OR DUSTS.DO NOT TAKE
INTERNALLY.PROTECT CONTANERS AGAINST PHYSICAL DAMAGE.KEEP
CONTAINERS FIRMLY CLOSED.STORE IN A DRY PLACE AWAY FROM
COMBUSTIBLES & EASILY OXIDIZABLES.

Respiratory Protection:DUST RESPIRATOR(U.S.BUREAU OF MINES 2175 MODEL
7100 OR OPTICAL RS090
Ventilation:AS REQUIRED TO CONTROL TLV IN AIR
Protective Gloves:RUBBER OR PLAST
Eye Protection:SAFETY GOGGLES
Other Protective Equipment:RUBBER SAFETY TOED SHOES.
Supplemental Safety and Health
THE MANUFACTURER OF THIS PRODUCT IS DIAMOND SHAMROCK OF CLEVELAND OHIO.
IN HANDLING &STORAGE AVOID STORAGE ON WOODEN FLOORS-WEAR RUBBER
GLOVES,MASK,OVERALLS,RUBBER APRONS,AND RUBBER SHOES.

HCC:D3
Boiling Pt:B.P. Text:N.A.
Spec Gravity:2.7
Evaporation Rate & Reference:BUTYL ACETATE-N.A.
Solubility in Water:APPRECIABLE
Appearance and Odor:DARK RED SOLID FLAKES OR POWDER
Percent Volatiles by Volume:0

Stability Indicator/Materials to Avoid:YES
CHROMIC ACID IS STRONG OXIDIZING AGENT,ORGANIC MATLS,OILS
Stability Condition to Avoid:STORAGE IN HUMID PLACES.STRONG
OXIDIZERS,OXIDIZING IN SOLN.
Hazardous Decomposition Products:NONE

Waste Disposal Methods:THE HEXSVALENT CHROMIUM IN SOLUTION MAY BE
REDUCED TO TRIVALENT CHROMIUM BY A VARIETY OF REDUCING AGENTS SUCH
AS SODIUM BISULFITE,SODIUM SULFITE,THEN PRECIPITATED AS THE HYDROUS
CHROMIC OXIDE BY NEUTR ALIZING TO PH OF 7.5 W/SODA ASH,CAUSTICSODA
& LIM

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.