Product ID:CHROMIUM TRIOXIDE, ACS REAGENT, C6051
MSDS Date:10/26/1992
FSC:6810
NIIN:00N062361
MSDS Number: BYGQS

SIGMA CHEMICAL CO

ST LOUIS, MO 63178
US

Emergency Phone: 314-771-5765

Info Phone: 800-325-3010

Cage: 0DK69

SIGMA CHEMICAL CO SIGMA DIAGNOSTICS DIV

ST LOUIS, MO 63103-2530 US

Telephone: 314-771-5765

Cage: 0DK69

3); (CHROMIUM TRIOXIDE, ACS REAGENT)

CAS: 1333-82-0

RTECS: GB6650000

OSHA PEL 0.5 MG CR/M3

ACGIH TLV: 0.05 MG CR/M3

W/SULFIDE TO PRECIPITATE FOR BURIAL AS HAZ WASTE.

RTECS: 9999999ZZ

& SE. MIXTURES OF CHROMIUM (VI) OXIDE & DMF

RTECS: 9999999ZZ

AT 250C TO CR2O*3 & O*2.

RTECS: 9999999ZZ

AND FULL LENGTH FACESHIELD .

RTECS: 9999999ZZ

LD50 LC50 Mixture:LD50: (ORAL, RAT) 80 MG/KG
Routes of Entry: Inhalation:YES Skin:YES Ingestion:YES
Reports of Carcinogenicity:NTP:YES IARC:YES OSHA:NO
Health Hazards Acute and Chronic:MAY BE FATAL IF INHALED, SWALLOWED OR
ABSORBED THRU SKIN. MATL IS EXTREMELY DESTRUCTIVE TO TISSUE OF
MUCOUS MEMBRANES & UPPER RESP TRACT, EYES & SKIN. INHALATION MAY BE
FATAL AS RESULT OF SPASM, INFLA MM & EDEMA OF LARYNX & BRONCHI,
CHEM PNEUMONITIS & PULM EDEMA. SYMPS OF EXPOS MAY INCLUDE BURNING
(EFTS OF OVEREXP)
Explanation of Carcinogenicity:CHROMIUM (VI) OXIDE (1:3): IARC MONO ON
EVAL OF CARCIN RISK OF CHEMS TO MAN, VOL 49, PG 49, 1990:GROUP 1.
NTP (SUPDAT)
Effects of Overexposure:HLTH HAZ: SENSATION, COUGHING, WHEEZING,
LARYNGITIS, SHORTNESS OF BREATH, HEADACHE, NAUSEA & VOMITING.
CHRONIC: CARCIN. MAY ALTER GENETIC MATL. DAMAGE TO THE LUNGS.
DAMAGE TO THE KIDNEYS. TARGET ORGAN S: LUNGS, KIDNEYS. OLFACTION
TUMORS, CYANOSIS, LUNG, THORAX TUMORS, HYPERMOTILITY, DIARRHEA,
FETAL ABNORMALITIES.
Medical Cond Aggravated by Exposure:NONE SPECIFIED BY MANUFACTURER.

First Aid:SKIN:IMMED FLUSH W/COPIOUS AMTS OF WATER FOR AT LEAST 15 MIN
WHILE REMOVING CONTAMD CLTHG & SHOES. EYES:IMMED FLUSH W/COPIOUS
AMTS OF WATER FOR AT LEAST 15 MIN. ASSURE ADEQ FLUSHING BY
SEPARATING LIDS W/FINGERS. INHAL:REMOVE TO FRESH AIR. IF NOT BRTHG
GIVE ARTF RESP. IF BRTHG IS DFCLT, GIVE OXYGEN. INGEST:WASH OUT
MOUTH W/WATER PROVIDED PERSON IS CONSCIOUS. CALL MD. USE PROT
CLTHG, GLOVES & MASK.

Extinguishing Media:NONCOMBUST. USE EXTING MEDIA APPROP TO SURROUNDING
FIRE CONDITIONS. USE WATER SPRAY TO COOL FIRE-EXPOS CONTAINERS.
Fire Fighting Procedures:USE NIOSH/MSHA APPROVED SCBA AND FULL
PROTECTIVE EQUIPMENT .
Unusual Fire/Explosion Hazard:EMITS TOX FUMES UNDER FIRE CNDTNS. STRONG
OXIDIZER. CNTCT W/OTHER MATL MAY CAUSE FIRE. THIS MATL, LIKE MOST
IN PWDR FORM, IS CAPABLE OF CREATING DUST EXPLOSION.

Spill Release Procedures:EVACUATE AREA. WEAR NIOSH/MSHA APPRVD SCBA,
RUB BOOTS & HEAVY RUB GLOVES. WEAR DISPOSABLE COVERALLS & DISCARD
AFTER USE. SWEEP UP, PLACE IN BAG & HOLD FOR WASTE DISP. AVOID
RAISING DUST. VENT AREA & W ASH SPILL SITE AFTER MATL PICKUP IS
COMPLETE.
Neutralizing Agent:NONE SPECIFIED BY MANUFACTURER.

Handling and Storage Precautions:DO NOT STORE NEAR, NOR ALLOW CONTACT
W/CLTHG & OTHER COMBUST MATL. KEEP TIGHTLY CLOSED. STORE IN A COOL,
DRY PLACE.
Other Precautions:HIGHLY TOX. CARCIN. MUTAGEN. CORR. HYGROSCOPIC. KEEP
AWAY FROM COMBUST MATLS, HEAT, SPKS & OPEN FLAME. WEAR SUITABLE
PROT CLTHG, GLOVES & EYE/FACE PROT. CHROMIUM (VI) OXIDE PRDCES
INCANDESCENCE WHEN M IXED WITH AS; NH*3; H*2S; P; NA (ING 3)

Respiratory Protection:WEAR APPROPRIATE NIOSH/MSHA APPROVED RESPIRATOR.
Ventilation:USE ONLY IN A CHEMICAL FUME HOOD.
Protective Gloves:CHEMICAL-RESISTANT GLOVES.
Eye Protection:ANSI APPRVD CHEM WORKERS GOGGS (ING 5)
Other Protective Equipment:EMERG EYE WASH AND DELUGE SHOWER WHICH MEET
ANSI DESIGN CRITERIA . WEAR PROTECTIVE CLOTHING.
Work Hygienic Practices:DO NOT BREATHE DUST. DO NOT GET IN EYES, ON
SKIN, ON CLTHG. AVOID PRLNG/RPTD EXPOS. WASH THORO AFTER HANDLING.
Supplemental Safety and Health
EXPLAN OF CARCIN: 7TH ANNUAL REPORT ON CARCINS, 1994:KNOWN TO BE
CARCIN. HUMAN:LUNG TUMORS. WASTE DISP METH: PLACE.IF NO RXN IS
OBSERVED ON ADDN OF ABOUT 10% OF SODIUM BISULFITE SOLN INITIATE IT
BY CA UTIOUSLY ADDING MORE ACID. IF MANGANESE, CHROMIUM OR
MOLYBDENUM ARE PRESENT ADJUST PH OF SOLN TO 7 & TREAT (ING 2)

Melt/Freeze Pt:M.P/F.P Text:385F,196C
Spec Gravity:2.700
Appearance and Odor:RED POWDER

Stability Indicator/Materials to Avoid:YES
ORGANIC MATERIALS. PHOSPHORUS. HYDROGEN SULFIDE GAS. AVOID CONTACT WITH
METALS.
Stability Condition to Avoid:HEAT.
Hazardous Decomposition Products:NATURE OF DECOMPOSITION PRODUCTS NOT
KNOWN.

Waste Disposal Methods:DISP MUST BE I/A/W FED, STATE & LOC REGS .
CAUTIOUSLY ACIDIFY 3% SOLN OR SUSPENSION OF MATL TO PH 2 W/SULFURIC
ACID. GRADUALLY ADD 50% EXCESS OF AQ SODIUM BISULFITE W/STIRRING AT
ROOM TEMP. INCR IN TEMP INDICATES THAT RXN IS TAKING (SUPDAT)

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