SIGMA CHEMICAL CO -- SODIUM SULFITE ANHYDROUS, S0505 -- 6505-00N092747 
=====================  Product Identification  =====================

Product ID:SODIUM SULFITE ANHYDROUS, S0505
MSDS Date:07/01/1999
FSC:6505
NIIN:00N092747
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:SODIUM SULFITE ANHYDROUS
CAS:7757-83-7
RTECS #:WE2150000
Other REC Limits:N/K 
OSHA PEL:N/K 
OSHA STEL:N/K 
ACGIH TLV:N/K 
ACGIH STEL:N/K 

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

LD50 LC50 Mixture:SEE TOXICOLOGICAL INFORMATION.
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. MAY BE
    HARMFUL IF INHALED/ABSORBED THROUGH SKIN. CAUSES EYE & SKIN
    IRRITATION. MATERIAL MAY BE IRRITATING TO MUCOUS MEMBRANES & UPPER
    RESPIRATORY TRACT. PROLONGED/REPEATED  EXPOSURE MAY CAUSE ALLERGIC
    REACTIONS IN CERTAIN SENSITIVE INDIVIDUALS. CHRONIC: POSSIBLE
    MUTAGEN. TARGET ORGANS: CENTRAL NERVOUS SYSTEM. TO THE BEST OF
    MANUFACTURER'S KNOWLEDGE, CHEMICAL, PHYSICAL,  & TOXICOLOGICAL
    PROPERTIES HAVE NOT BEEN THOROUGHLY INVESTIGATED. INGESTION RESULTS
    IN IRRITATION OF GASTROINTESTINAL TRACT. LARGE DOSES MAY CAUSE
    VIOLENT COLIC & DIARRHEA, CIRCULATORY DISTURBANCES, C ENTRAL
    NERVOUS DEPRESSION & EVEN DEATH.
Explanation of Carcinogenicity:THIS PRODUCT IS OR CONTAINS A COMPONENT
    THAT IS NOT CLASSIFIABLE AS TO ITS CARCINOGENICITY BASED ON ITS
    IARC, ACGIH, NTP OR EPA CLASSIFICATION.
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: 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:NON-COMBUSTIBLE. USE EXTINGUISHING MEDIA
    APPROPRIATE TO SURROUNDING FIRE CONDITIONS.
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: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 AND WASH SPILL SI TE AFTER MATERIAL PICKUP IS COMPLETE.

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

Handling and Storage Precautions:DO NOT BREATHE DUST. AVOID CONTACT
    WITH EYES, SKIN AND CLOTHING. AVOID PROLONGED OR REPEATED EXPOSURE.
    HARMFUL SOLID. IRRITANT. POSSIBLE MUTAGEN. POSSIBLE SENSITIZER.
    KEEP TIGHTLY CLOSED. STORE IN A C OOL DRY PLACE.

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

Respiratory Protection:WEAR APPROPRIATE NIOSH APPROVED RESPIRATOR.
Ventilation:MECHANICAL EXHAUST REQUIRED.
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  ==================

Spec Gravity:2.633
Appearance and Odor:WHITE CRYSTALLINE POWDER.

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

Stability Indicator/Materials to Avoid:YES
STRONG ACIDS.
Stability Condition to Avoid:AIR-SENSITIVE. MOISTURE-SENSITIVE.
Hazardous Decomposition Products:SULFUR OXIDES.

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

Toxicological Information:RTECS NUMBER: WE2150000, SODIUM SULFITE
    (2:1). TOXICITY DATA: ORL-MUS LD50: 820 MG/KG; TRENAF 27, 159,
    1976. IPR-MUS LD50: 950 MG/KG; ARZNAD 31, 1713, 1981. IVN-MUS LD50:
    175 MG/KG; JPETAB 101, 101, 1 951. TARGET ORGAN DATA: BEHAVIORAL
    (CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD); LUNGS, THORAX OR
    RESPIRATION (RESPIRATORY DEPRESSION, OTHER CHANGES). ONLY SELECTED
    REGISTRY OF TOXIC EFFECTS OF CHEMIC AL 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:CONTACT A LICENSED PROFESSIONAL WASTE DISPOSAL
    SERVICE TO DISPOSE OF THIS MATERIAL. OBSERVE ALL FEDERAL, STATE AND
    LOCAL ENVIRONMENTAL REGULATIONS.

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

Transport Information:CONTACT SIGMA CHEMICAL COMPANY FOR TRANSPORTATION
    INFORMATION.

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

Federal Regulatory Information:EUROPEAN INFORMATION: HARMFUL. R 22:
    HARMFUL IF SWALLOWED. R 36/38: IRRITATING TO EYES AND SKIN. R 40:
    POSSIBLE RISK OF IRREVERSIBLE EFFECTS. S 22: DO NOT BREATHE DUST. S
    26: IN CASE OF CONTACT WITH E YES, RINSE IMMEDIATELY WITH PLENTY OF
    WATER AND SEEK MEDICAL ADVICE. S 36: WEAR SUITABLE PROTECTIVE
    CLOTHING. REVIEWS, STANDARDS, AND REGULATIONS: OEL = MAK. IARC
    CANCER REVIEW: HUMAN INADEQUATE EVIDE NCE IMEMDT 54, 131, 1992.
    IARC CANCER REVIEW: ANIMAL INADEQUATE EVIDENCE IMEMDT 54, 131,
    1992. IARC	CANCER REVIEW: GROUP 3. EPA FIFRA 1988 PESTICIDE
    SUBJECT TO REGISTRATION OR RE-REDISTRATION FEREAC 54, 7740, 1989.
    (OTHER INFORMATION)
State Regulatory Information:

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

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