Product ID:POTASSIUM METABISULFITE, P197500
MSDS Date:12/27/1991
FSC:6810
NIIN:00N008684
MSDS Number: CBVPS

FISHER SCIENTIFIC CHEMICAL

1 REAGENT LANE
FAIRLAWN, NJ 07410
US

Emergency Phone: 800-424-9300 (CHEMTREC)

Info Phone: 201-796-7100

Cage: 1B464

FISHER SCIENTIFIC CO. CHEMICAL MFG DIV

FAIRLAWN, NJ 07410-2802 US

Telephone: 201-796-7100

Cage: 1B464

IN PRESS-DEMAND/OTHER POS-PRESS MODE IN COMBINATION

RTECS: 9999999ZZ

DEMAND OR OTHER POSITIVE-PRESSURE MODE.

RTECS: 9999999ZZ

DELUGE SHOWER .

RTECS: 9999999ZZ

SENSITIZER-INHALATION, SKIN, INGEST. AT INCR RISK

RTECS: 9999999ZZ

SALINE, OCCASNLY LIFTING UPPER & LOWER LIDS,

RTECS: 9999999ZZ

TREAT SYMPTOMATICALLY &

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KEEP HEAD LOWER THAN HIPS TO PVNT ASPIRATION. TREAT

RTECS: 9999999ZZ

CNTNRS FROM SPILL AREA. FOR LARGER

RTECS: 9999999ZZ

UNNECESSARY PEOPLE AWAY. ISOLATE HAZARD AREA AND

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ON SPECIFIC OPERATION, MUST NOT EXCEED WORKING

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INSTITUTE FOR OCCUP SFTY & HLTH (NIOSH). ANY NIOSH

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RESP. ANY NIOSH APPRVD AIR-PURIFYING RESP

RTECS: 9999999ZZ

POWERED AIR-PURIFYING RESP W/DUST & MIST FILTER. ANY

RTECS: 9999999ZZ

EFFICIENCY PARTICULATE FILTER. ANY NIOSH APPRVD TYPE

RTECS: 9999999ZZ

OR OTHER POS PRESS/CONTINUOUS-FLOW MODE. ANY NIOSH

RTECS: 9999999ZZ

ANY NIOSH APPRVD SCBA

RTECS: 9999999ZZ

DEMAND/OTHER POS-PRESS MODE. ANY NIOSH APPRVD

RTECS: 9999999ZZ

POTASSIUM PYROSULFITE; (POTASSIUM METABISULFITE)

CAS: 16731-55-8

RTECS: TT4920000

Fraction By Weight: 100%

OSHA PEL N/K

ACGIH TLV: N/K

TYPE OF SURROUNDING FIRE. AVOID BREATHING HAZARDOUS

RTECS: 9999999ZZ

DISTURB, CNS DEPRESS, & DEATH IN RATS. IN

RTECS: 9999999ZZ

SULFITES MAY CAUSE GENERALIZED ITCHING, LARYNGEAL

RTECS: 9999999ZZ

SKIN, ANAPHYLAXIS, RESP ARREST, & UNCON.

RTECS: 9999999ZZ

CONT W/IRRITANTS MAY CAUSE DERM. RPTD EXPOS MAY RSLT

RTECS: 9999999ZZ

RPTD INGEST OF FOODS CNTNG

RTECS: 9999999ZZ

RPTD FOLLOWING INGEST DURING PREGNANCY IN RATS.

RTECS: 9999999ZZ

LD50 LC50 Mixture:NONE SPECIFIED BY MANUFACTURER.
Routes of Entry: Inhalation:YES Skin:YES Ingestion:YES
Reports of Carcinogenicity:NTP:NO IARC:NO OSHA:NO
Health Hazards Acute and Chronic:ACUTE:INHAL:INHAL OF DUSTS MAY CAUSE
MUC MEMB IRRIT W/SORE THROAT, COUGHING & SHORTNESS OF BREATH.
SULFITES MAY CAUSE SENSIT RXNS IN PREVIOUSLY EXPOS INDIVIDUALS,
ESPECIALLY ASTHMATICS. SYMPS MAY INCL FLUSHING, SEV WHEEZING,
SWELLING OF THORAT, & GENERALIZED ITCHING. SKIN:MAY CAUSE IRRIT
W/REDNESS (EFTS OF OVEREXP)
Explanation of Carcinogenicity:NOT RELEVANT.
Effects of Overexposure:HLTH HAZ:& PAIN. SENSITIZ DERM MAY OCCUR IN
PREVIOUSLY EXPOS INDIVIDUALS. EYE:MAY CAUSE IRRIT W/REDNESS & PAIN.
INGEST:MAY CAUSE SORE THROAT & ABDOM PAIN. LG SINGLE DOSES OF
POTASSIUM SALTS MAY CAUSE VOMIT TO OCCUR. INGEST OF LG DOSE OF
SULFITE SALTS HAS BEEN RPTD TO CAUSE VIOLENT COLIC, & DIARR,
CIRCULATORY (ING 3)
Medical Cond Aggravated by Exposure:NONE SPECIFIED BY MANUFACTURER.

First Aid:INHAL:REMOE FROM EXPOS AREA TO FRESH AIR IMMED. IF BRTHG HAS
STOPPED, PERFORM ARTF RESP. KEEP PERSON WARM & AT REST. TREAT
SYMPTOMATICALLY & SUPPORTIVELY. GET MED ATTN IMMED. SKIN:REMOVE
CONTAMD CLTHG & SHOES IMMED. WASH AFFECTED AREA W/SOAP OR MILD
DETERGENT & LG AMTS OF WATER UNTIL NO EVID OF CHEM REMAINS (APPROX
15-20 MINS). GET MED ATTN IMMED. EYE:WASH IMMED W/LG AMTS OF
WATER/NORMAL (ING 10)

Extinguishing Media:DRY CHEM, CO*2, WATER SPRAY/REGULAR FOAM (1990 EMER
RESPONSE GUIDEBOOK, DOT P 5800.5). FOR LARGER FIRES, USE (SUPDAT)
Fire Fighting Procedures:NIOSH APPRVD SCBA & FULL PROT EQUIP . MOVE
CNTNR FROM FIRE AREA IF YOU CAN DO IT W/OUT RISK. DO NOT SCATTER
SPILLED MATL W/HIGH-PRESS WATER (SUPDAT)
Unusual Fire/Explosion Hazard:NEGLIGIBLE FIRE HAZARD WHEN EXPOSED TO
HEAT OR FLAME.

Spill Release Procedures:OCCUP SPILL:DO NOT TOUCH SPILLED MATL. STOP
LEAK IF YOU CAN DO SO W/OUT RISK. SM SPILLS:TAKE UP W/SAND OR OTHER
ABSORB MATL & PLACE INTO CNTNRS FOR LATER DISP. FOR SM DRY SPILLS,
W/CLEAN SHOVEL PLACE MATL INTO CLEAN, DRY CNTNR & COVER. MOVE (ING
13)
Neutralizing Agent:NONE SPECIFIED BY MANUFACTURER.

Handling and Storage Precautions:STORE AWAY FROM INCOMPATIBLE
SUBSTANCES. MAY BURN BUT DOES NOT IGNITE READILY. FLAMMABLE,
POISONOUS GASES MAY ACCUMULATE IN TANKS & HOPPER CARS.
Other Precautions:MAY IGNITE COMBUSTIBLES (WOOD, PAPER, OIL, ETC.).

Respiratory Protection:FOLLOWING RESPS ARE REC BASED ON INFO FOUND IN
PHYSICAL DATA, TOXICITY & HLTH EFTS SECTION. THEY ARE RANKED IN
ORDER FROM MIN TO MAX RESP PROT. SPECIFIC RESP SELECTED MUST BE
BASED ON CONTAM LEVS FOUN D IN WORK PLACE, MUST BE BASED (ING 15)
Ventilation:PROVIDE LOCAL EXHAUST VENTILATION SYSTEM.
Protective Gloves:IMPERVIOUS GLOVES .
Eye Protection:ANSI APPRVD CHEM WORKERS GOGGLES .
Other Protective Equipment:MUST WEAR APPROP PROT (IMPERVIOUS) CLTHG &
EQUIP TO PVNT RPTD/PRLNGD SKIN CONT. ANSI APPRVD EMER EYE WASH &
(ING 25)
Work Hygienic Practices:NONE SPECIFIED BY MANUFACTURER.
Supplemental Safety and Health
MP:DECOMPOSES 374F,190C. APPEAR/ODOR:SOLID WITH A SULFUR DIOXIDE ODOR.
EXTING MEDIA:WATER SPRAY, FOG/REGULAR FOAM (1990 EMER RESPONSE
GUIDEBOOK, DOT P 5800.5). FIRE FIGHT PROC:STREAMS. DIKE FIRE-CONTR
OL WATER FOR LATER DISP (1990 EMER RESPONSE GUIDEBOOK, DOT P
5800.5, GUIDE PAGE 31). USE AGENTS SUITABLE FOR (ING 2)

Melt/Freeze Pt:M.P/F.P Text:SUPDAT
Spec Gravity:2.34
pH:ACIDIC
Evaporation Rate & Reference:NOT KNOWN
Solubility in Water:SOLUBLE
Appearance and Odor:WHITE OR COLORLESS MONOCLINIC PLATES OR GRANULAR OR
CRYSTALLINE POWDER (SUPDAT)

Stability Indicator/Materials to Avoid:YES
POTASSIUM METABISULFITE:ACIDS:LIBERATES SULFUR DIOXIDE.
Stability Condition to Avoid:STABLE UNDER NORM TEMPERATURES & PRESSURES
IN AN ENCLOSED CNTNR. SLOWLY OXIDIZED TO SULFATE ON EXPOSURE TO
AIR.
Hazardous Decomposition Products:THERMAL DECOMPOSITION PRODUCTS MAY
INCLUDE TOXIC OXIDES OF SULFUR.

Waste Disposal Methods:OBSERVE ALL FEDERAL, STATE & LOCAL REGS WHEN
STORING/DISPOSING OF THIS SUBSTANCE. FOR ASSISTANCE, CONTACT THE
DISTRICT DIRECTOR OF THE ENVIRONMENTAL PROTECTION AGENCY.

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.