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MSDS for POTASSIUM DICHROMATE Page 1

1 - PRODUCT IDENTIFICATION

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PRODUCT NAME: POTASSIUM DICHROMATE

FORMULA: K2CR2O7

FORMULA WT: 294.19

CAS NO.: 07778-50-9

NIOSH/RTECS NO.: HX7680000

COMMON SYNONYMS: DICHROMIC ACID, DIPOTASSIUM SALT; BICHROMATE OF POTASH

PRODUCT CODES: 3094,3090,3092,3093

EFFECTIVE: 09/10/86

REVISION #02

PRECAUTIONARY LABELLING

BAKER SAF-T-DATA(TM) SYSTEM

HEALTH - 4 EXTREME (CANCER CAUSING)

FLAMMABILITY - 0 NONE

REACTIVITY - 3 SEVERE (OXIDIZER)

CONTACT - 3 SEVERE (CORROSIVE)

HAZARD RATINGS ARE 0 TO 4 (0 = NO HAZARD; 4 = EXTREME HAZARD).

LABORATORY PROTECTIVE EQUIPMENT

GOGGLES; LAB COAT; VENT HOOD; PROPER GLOVES

PRECAUTIONARY LABEL STATEMENTS

POISON DANGER

STRONG OXIDIZER - CONTACT WITH OTHER MATERIAL MAY CAUSE FIRE

MAY BE FATAL IF ABSORBED THROUGH SKIN - HARMFUL IF INHALED OR SWALLOWED.

MAY CAUSE BURNS OR EXTERNAL ULCERS

CAUTION: CONTAINS CHROMIUM(VI),CANCER HAZARD

KEEP FROM CONTACT WITH CLOTHING AND OTHER COMBUSTIBLE MATERIALS. DO NOT

STORE NEAR COMBUSTIBLE MATERIALS. DO NOT GET IN EYES, ON SKIN, ON CLOTHING.

DO NOT BREATHE DUST. KEEP IN TIGHTLY CLOSED CONTAINER. USE WITH ADEQUATE

VENTILATION. WASH THOROUGHLY AFTER HANDLING. IN CASE OF FIRE, USE WATER

SPRAY, ALCOHOL FOAM, DRY CHEMICAL OR CARBON DIOXIDE. IN CASE OF SPILL,

SWEEP UP AND REMOVE. FLUSH SPILL AREA WITH WATER.

SAF-T-DATA(TM) STORAGE COLOR CODE: YELLOW (REACTIVE)

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2 - HAZARDOUS COMPONENTS

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COMPONENT % CAS NO.

POTASSIUM DICHROMATE 90-100 7778-50-9

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3 - PHYSICAL DATA

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MSDS for POTASSIUM DICHROMATE Page 2

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BOILING POINT: N/A VAPOR PRESSURE(MM HG): N/A

MELTING POINT: 398 C ( 748 F) VAPOR DENSITY(AIR=1): 10.0

SPECIFIC GRAVITY: 2.67 EVAPORATION RATE: N/A

(H2O=1) (BUTYL ACETATE=1)

SOLUBILITY(H2O): APPRECIABLE (MORE THAN 10 %) % VOLATILES BY VOLUME: 0

APPEARANCE & ODOR: BRIGHT, ORANGE-RED CRYSTALS.

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4 - FIRE AND EXPLOSION HAZARD DATA

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FLASH POINT (CLOSED CUP N/A NFPA 704M RATING: 1-0-1 OXY

FLAMMABLE LIMITS: UPPER - N/A % LOWER - N/A %

FIRE EXTINGUISHING MEDIA

USE WATER SPRAY.

SPECIAL FIRE-FIGHTING PROCEDURES

FIREFIGHTERS SHOULD WEAR PROPER PROTECTIVE EQUIPMENT AND SELF-CONTAINED

(POSITIVE PRESSURE IF AVAILABLE) BREATHING APPARATUS WITH FULL FACEPIECE.

MOVE EXPOSED CONTAINERS FROM FIRE AREA IF IT CAN BE DONE WITHOUT RISK.

USE WATER TO KEEP FIRE-EXPOSED CONTAINERS COOL.

UNUSUAL FIRE & EXPLOSION HAZARDS

STRONG OXIDIZER. CONTACT WITH OTHER MATERIAL MAY CAUSE FIRE.

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5 - HEALTH HAZARD DATA

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THIS SUBSTANCE IS LISTED AS AN NTP HUMAN CARCINOGEN AND AND IARC HUMAN

CARCINOGEN (GROUP 1).

THRESHOLD LIMIT VALUE (TLV/TWA): 0.05 MG/M3 ( PPM)

PERMISSIBLE EXPOSURE LIMIT (PEL): 0.5 MG/M3 ( PPM)

CARCINOGENICITY: NTP: YES IARC: YES Z LIST: NO OSHA REG: NO

EFFECTS OF OVEREXPOSURE

CONTACT WITH SKIN MAY CAUSE ULCERS, LOCAL DISCOLORATION, ECZEMA.

PROLONGED CONTACT WITH AIRBORNE SUBSTANCE MAY LEAD TO PERFORATED SEPTUM.

DUST MAY ULCERATE MUCOUS MEMBRANES.

INGESTION MAY CAUSE NAUSEA, VOMITING, HEADACHES, DIZZINESS,

GASTROINTESTINAL IRRITATION.

SKIN ABSORPTION MAY BE HARMFUL OR FATAL.

TARGET ORGANS

SKIN

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MSDS for POTASSIUM DICHROMATE Page 3

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MEDICAL CONDITIONS GENERALLY AGGRAVATED BY EXPOSURE

NONE IDENTIFIED

ROUTES OF ENTRY

INGESTION, EYE CONTACT, SKIN CONTACT

EMERGENCY AND FIRST AID PROCEDURES

CALL A PHYSICIAN.

IF SWALLOWED, IF CONSCIOUS, IMMEDIATELY INDUCE VOMITING.

IF INHALED, REMOVE TO FRESH AIR. IF NOT BREATHING, GIVE ARTIFICIAL

RESPIRATION. IF BREATHING IS DIFFICULT, GIVE OXYGEN.

IN CASE OF CONTACT, IMMEDIATELY FLUSH EYES WITH PLENTY OF WATER FOR AT

LEAST 15 MINUTES. FLUSH SKIN WITH WATER.

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6 - REACTIVITY DATA

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STABILITY: STABLE HAZARDOUS POLYMERIZATION: WILL NOT OCCUR

CONDITIONS TO AVOID: HEAT

INCOMPATIBLES: COMBUSTIBLE MATERIALS, ORGANIC MATERIALS,

STRONG REDUCING AGENTS

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7 - SPILL AND DISPOSAL PROCEDURES

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STEPS TO BE TAKEN IN THE EVENT OF A SPILL OR DISCHARGE

WEAR SELF-CONTAINED BREATHING APPARATUS AND FULL PROTECTIVE CLOTHING.

KEEP COMBUSTIBLES (WOOD, PAPER, OIL, ETC.) AWAY FROM SPILLED MATERIAL.

WITH CLEAN SHOVEL, CAREFULLY PLACE MATERIAL INTO CLEAN, DRY CONTAINER AND

COVER; REMOVE FROM AREA. FLUSH SPILL AREA WITH WATER.

DISPOSAL PROCEDURE

DISPOSE IN ACCORDANCE WITH ALL APPLICABLE FEDERAL, STATE, AND LOCAL

ENVIRONMENTAL REGULATIONS.

EPA HAZARDOUS WASTE NUMBER: D002, D003 (CORROSIVE, REACTIVE WASTE)

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8 - PROTECTIVE EQUIPMENT

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VENTILATION: USE ADEQUATE GENERAL OR LOCAL EXHAUST VENTILATION

TO KEEP FUME OR DUST LEVELS AS LOW AS POSSIBLE.

RESPIRATORY PROTECTION: A RESPIRATOR WITH DUST/MIST FILTER IS RECOMMENDED.

IF AIRBORNE CONCENTRATION EXCEEDS TLV, A SELF-

CONTAINED BREATHING APPARATUS IS ADVISED.

EYE/SKIN PROTECTION: SAFETY GOGGLES, UNIFORM, APRON, PROPER GLOVES ARE

RECOMMENDED.

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9 - STORAGE AND HANDLING PRECAUTIONS

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MSDS for POTASSIUM DICHROMATE Page 4

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SAF-T-DATA(TM) STORAGE COLOR CODE: YELLOW (REACTIVE)

SPECIAL PRECAUTIONS

KEEP CONTAINER TIGHTLY CLOSED. STORE SEPARATELY AND AWAY FROM FLAMMABLE

AND COMBUSTIBLE MATERIALS.

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10 - TRANSPORTATION DATA AND ADDITIONAL INFORMATION

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DOMESTIC (D.O.T.)

PROPER SHIPPING NAME POTASSIUM DICHROMATE (AIR ONLY)

HAZARD CLASS ORM-A

UN/NA NA1479

LABELS NONE

REPORTABLE QUANTITY 1000 LBS.

INTERNATIONAL (I.M.O.)

PROPER SHIPPING NAME CHEMICALS, N.O.S. (NON-REGULATED)