SIGMA CHEMICAL CO -- POTASSIUM SULFITE, 97%, 289817  -- 6810-00N072050
<pre>=====================  Product Identification  =====================

Product ID:POTASSIUM SULFITE, 97%, 289817
MSDS Date:04/01/1996
FSC:6810
NIIN:00N072050
=== Responsible Party ===
Company Name:SIGMA CHEMICAL CO
Box:14508
City:ST LOUIS
State:MO
ZIP:63178
Country:US
Info Phone Num:314-771-5765
Emergency Phone Num:516-467-3535
CAGE:21076
=== Contractor Identification ===
Company Name:SIGMA CHEMICAL COMPANY
Address:3050 SPRUCE ST
Box:14508
City:ST LOUIS
State:MO
ZIP:63178
Country:US
Phone:314-771-5765
CAGE:21076

=============  Composition/Information on Ingredients  =============

Ingred Name:POTASSIUM SULFITE
CAS:10117-38-1
RTECS #:WT3530000
Fraction by Wt: 97%
OSHA PEL:N/K 
ACGIH TLV:N/K 

=====================  Hazards Identification  =====================

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:MAY BE HARMFUL BY INHALATION,
    INGESTION, OR SKIN ABSORPTION. CAUSES EYE AND SKIN IRRITATION.
    MATERIAL IS IRRITATING TO MUCOUS MEMBRANES AND UPPER RESPIRATORY
    TRACT. TO BEST OF MFR'S KNOWLEDGE, C HEMICAL, PHYSICAL, &
    TOXICOLOGICAL PROPERTIES HAVE NOT BEEN THOROUGHLY INVESTIGATED.
Explanation of Carcinogenicity:NOT RELEVANT.
Effects of Overexposure:SEE HEALTH HAZARDS.
Medical Cond Aggravated by Exposure:PERSONS WITH ALLERGIES AND/OR
    ASTHMA MAY EXHIBIT HYPERSENSITIVITY TO SULFITES.

=======================  First Aid Measures  =======================

First Aid:EYES:IMMED FLUSH W/COPIOUS AMTS OF WATER FOR AT LEAST 15
    MINUTES. SKIN:IMMED WASH WITH SOAP & COPIOUS AMTS OF WATER.
    INHAL:REMOVE TO FRESH AIR. IF NOT BRTHG GIVE ARTF RESP. IF BRTHG IS
    DFCLT, GIVE OXY G. INGEST:WASH OUT MOUTH W/WATER PROVIDED PERSON IS
    CONSCIOUS. CALL PHYSICIAN. WASH CONTAMINATED CLOTHING BEFORE REUSE.

=====================  Fire Fighting Measures  =====================

Extinguishing Media:CARBON DIOXIDE, DRY CHEMICAL POWDER OR APPROPRIATE
    FOAM.
Fire Fighting Procedures:USE NIOSH APPROVED SCBA & FULL PROTECTIVE
    EQUIPMENT .
Unusual Fire/Explosion Hazard:EMITS TOXIC FUMES UNDER FIRE CONDITIONS.

==================  Accidental Release Measures  ==================

Spill Release Procedures:EVACUTE AREA. WEAR NIOSH APPRVD RESP, CHEM
    SFTY GOGGLES, RUBB BOOTS & HEAVY RUBB GLOVES. SWEEP UP, PLACE IN A
    BAG & HOLD FOR WASTE DISPOSAL. AVOID RAISING DUST. VENTILATE AREA &
    WASH SPILL SITE AFTER  MATL PICKUP IS COMPLETE.
Neutralizing Agent:NONE SPECIFIED BY MANUFACTURER.

======================	Handling and Storage  ======================

Handling and Storage Precautions:IRRITANT. IRRITATING TO EYES, RESP SYS
    & SKIN. WEAR SUITABLE GLOVES & EYE/FACE PROTECTION. STORE UNDER
    NITROGEN.
Other Precautions:DO NOT BREATHE DUST. AVOID CONTACT WITH EYES, SKIN &
    CLTHG. AVOID PRLNGD/RPTED EXPOSURE. KEEP TIGHTLY CLOSED. STORE IN
    COOL DRY PLACE.

=============  Exposure Controls/Personal Protection  =============

Respiratory Protection:WEAR APPROPRIATE NIOSH APPROVED RESPIRATOR.
Ventilation:MECHANICAL EXHAUST REQUIRED.
Protective Gloves:CHEMICAL-RESITANT GLOVES.
Eye Protection:ANSI APPRVD CHEM WORKERS GOGGLES .
Other Protective Equipment:ANSI APPRVD EMERGENCY EYE WASH & DELUGE
    SHOWER .
Work Hygienic Practices:WASH THOROUGHLY AFTER HANDLING.
Supplemental Safety and Health
WASTE DISP METH:FUMES WHICH CAN BE CONTROLLED BY RATE OF ADDN. OBSERVE
    ALL FEDERAL, STATE & LOCAL ENVIR REGS.

==================  Physical/Chemical Properties  ==================

Evaporation Rate &amp; Reference:NOT KNOWN
Solubility in Water:NOT KNOWN
Appearance and Odor:WHITE CRYSTALLINE POWDER.

=================  Stability and Reactivity Data  =================

Stability Indicator/Materials to Avoid:YES
STRONG OXIDIZING AGENTS, STRONG ACIDS, AIR SENSITIVE, MOISTURE
    SENSITIVE.
Stability Condition to Avoid:NONE SPECIFIED BY MANUFACTURER.
Hazardous Decomposition Products:SULFUR OXIDES.

====================  Disposal Considerations  ====================

Waste Disposal Methods:SM QTYS:CAUTIOUSLY ADD TO LG STIRRED EXCESS OF
    WATER. ADJUST PH TO NEUT, SEPARATE ANY INSOL SOLIDS/LIQS & PACKAGE
    THEM FOR HAZ-WASTE DISP. FLUSH AQUEOUS SOLN DOWN DRAIN W/PLENTY OF
    WATER. HYDROLYSIS &  NEUTRALIZATION RXN MAY GENERATE HEAT AND
    (SUPDAT)

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