SIGMA CHEMICAL CO -- POTASSIUM METABISULFITE, P2522  -- 6810-00N092697
<pre>=====================  Product Identification  =====================

Product ID:POTASSIUM METABISULFITE, P2522
MSDS Date:07/01/1999
FSC:6810
NIIN:00N092697
Status Code:A
=== 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:314-771-5765
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 METABISULFITE
CAS:16731-55-8
RTECS #:TT4920000
Other REC Limits:N/K 
OSHA PEL:N/K 
OSHA STEL:N/K 
ACGIH TLV:N/K 
ACGIH STEL:N/K 

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

Routes of Entry: Inhalation:YES  Skin:YES  Ingestion:YES
Reports of Carcinogenicity:NTP:NO    IARC:NO	OSHA:NO
Health Hazards Acute and Chronic:ACUTE: HARMFUL IF SWALLOWED, INHALED,
    OR ABSORBED THROUGH SKIN. CAUSES SEVERE IRRITATION. HIGH
    CONCENTRATIONS ARE EXTREMELY DESTRUCTIVE TO TISSUES OF THE MUCOUS
    MEMBRANES AND UPPER RESPIRATORY TRACT,  EYES AND SKIN. SYMPTOMS OF
    EXPOSURE MAY INCLUDE BURNING SENSATION, COUGHING, WHEEZING,
    LARYNGITIS, SHORTNESS OF BREATH, HEADACHE, NAUSEA AND VOMITING. MAY
    CAUSE ALLERGIC RESPIRATORY AND SKIN REACTIONS . EXPOSURE CAN CAUSE
    COUGHING, CHEST PAIN, DIFFICULTY IN BREATHING, STOMACH PAINS,
    VOMITING, DIARRHEA. WARNING: CERTAIN INDIVIDUALS WITH PREEXISTING
    RESPIRATORY CONDITIONS SUCH AS ASTHMA MAY EXPERIENC E (EFFECTS OF
    OVEREXPOSURE)
Effects of Overexposure:HEALTH HAZARDS: HYPERSENSITIVITY TO SULFITES
    AND SULFUR DIOXIDE. THE SYMPTOMS INCLUDE BRONCHOCONSTRICTION,
    BRONCHOSPASM, GASTROINTESTINAL DISTURBANCES, FLUSHING, HYPOTENSION,
    TINGLING SENSATION, URTIC ARIA/ANGIOEDEMA AND SHOCK.
Medical Cond Aggravated by Exposure:PREEXISTING RESPIRATORY CONDITIONS.

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

First Aid:EYES: IMMEDIATELY FLUSH WITH COPIOUS AMOUNTS OF WATER FOR AT
    LEAST 15 MINUTES. SKIN: IMMEDIATELY WASH WITH SOAP AND COPIOUS
    AMOUNTS OF WATER. INHALATION: REMOVE TO FRESH AIR. IF NOT
    BREATHING, GIVE AR TIFICIAL RESPIRATION. IF BREATHING IS DIFFICULT,
    GIVE OXYGEN. INGESTION: WASH OUT MOUTH WITH WATER PROVIDED PERSON
    IS CONSCIOUS. CALL A PHYSICIAN. WASH CONTAMINATED CLOTHING BEFORE
    REUSE.

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

Extinguishing Media:DRY CHEMICAL POWDER.
Fire Fighting Procedures:WEAR NIOSH APPROVED SCBA AND FULL PROTECTIVE
    EQUIPMENT .
Unusual Fire/Explosion Hazard:EMITS TOXIC FUMES UNDER FIRE CONDITIONS.

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

Spill Release Procedures:EVACUATE AREA. WEAR NIOSH APPROVED
    SELF-CONTAINED BREATHING APPARATUS, RUBBER BOOTS AND HEAVY RUBBER
    GLOVES. SWEEP UP, PLACE IN A BAG AND HOLD FOR WASTE DISPOSAL. AVOID
    RAISING DUST. VENTILATE AREA AN D WASH SPILL SITE AFTER MATERIAL
    PICKUP IS COMPLETE.

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

Handling and Storage Precautions:DO NOT BREATHE DUST. DO NOT GET IN
    EYES, ON SKIN, ON CLOTHING. AVOID PROLONGED OR REPEATED EXPOSURE.
    SEVERE IRRITANT. SENSITIZER. HARMFUL SOLID. KEEP TIGHTLY CLOSED.
    AVOID CONTACT WITH ACID. STORE IN  A COOL DRY PLACE.

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

Respiratory Protection:WEAR APPROPRIATE NIOSH APPROVED RESPIRATOR.
Ventilation:USE ONLY IN A CHEMICAL FUME HOOD.
Protective Gloves:CHEMICAL-RESISTANT GLOVES.
Eye Protection:ANSI APPROVED CHEMICAL WORKERS GOGGLES .
Other Protective Equipment:EYEWASH AND DELUGE SHOWER MEETING ANSI
    DESIGN CRITERIA . WEAR OTHER PROTECTIVE CLOTHING.
Work Hygienic Practices:WASH THOROUGHLY AFTER HANDLING.
Supplemental Safety and Health

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

Appearance and Odor:WHITE POWDER.

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

Stability Indicator/Materials to Avoid:YES
STRONG OXIDIZING AGENTS, AIR-SENSITIVE, MOISTURE-SENSITIVE.
Stability Condition to Avoid:AVOID CONTACT WITH ACID. FORMATION OF
    SULFUR DIOXIDE BY ACIDS.
Hazardous Decomposition Products:TOXIC FUMES OF SULFUR OXIDES.

===================  Toxicological Information	===================

Toxicological Information:RTECS NUMBER: TT4920000, POTASSIUM
    PYROSULFITE. ONLY SELECTED REGISTRY OF TOXIC EFFECTS OF CHEMICAL
    SUBSTANCES (RTECS) DATA IS PRESENTED HERE. SEE ACTUAL ENTRY IN
    RTECS FOR COMPLETE INFORMATION.

=====================  Ecological Information  =====================

Ecological:DATA NOT YET AVAILABLE.

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

Waste Disposal Methods:FOR SML QTYS: CAUTIOUSLY ADD TO LGE STIRRED
    EXCESS OF WATER. ADJUST PH TO NEUTRAL, SEPARATE ANY INSOL
    SOLIDS/LIQS & PACKAGE THEN FOR HAZ WASTE DISP. FLUSH AQUEOUS SOLN
    DOWN DRAIN W/PLENTY OF WATER. HY DROLYSIS & NEUTRALIZATION
    REACTIONS MAY GENERATE HEAT & FUMES WHICH CAN BE CONTROLLED BY RATE
    OF ADD ITION. OBSERVE ALL FED, STATE & LOC ENVIRON REGS.

===================  MSDS Transport Information  ===================

Transport Information:CONTACT SIGMA CHEMICAL COMPANY FOR TRANSPORTATION
    INFORMATION.

=====================  Regulatory Information  =====================

Federal Regulatory Information:EUROPEAN INFO: HARMFUL. R 20/21/22:
    HARMFUL BY INHAL, IN CONT W/SKIN & IF SWALLOWED. R 42/43: MAY CAUSE
    SENSIT BY INHAL & SKIN CONT. R 31: CONT W/ACIDS LIBERATES TOX GAS.
    S 26: IN CASE OF CONT W/EYES,  RINSE IMMED W/PLENTY OF WATER & SEEK
    MED ADVICE. S 36: WEAR SUITABLE PROT CLTHG. REVIEWS, STDS, & REGS:
    OEL=MAK. IARC CANCER REVIEW: HUMAN INADEQ EVIDENCE; IMEMDT 54, 131,
    1992. IARC CANCER REVIEW: A NIMAL INADEQ EVIDENCE; IMEMDT 54, 131,
    1992. IARC CANCER REVIEW: GROUP 3; IMEMDT 54, 131, 1992. NOHS 
    1974: HZD 82177; NIS 17; TNF 1935; NOS 13; TNE 5348. (OTHER INFO)

=======================  Other Information  =======================

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