SIGMA CHEMICAL CO -- SODIUM HYDROSULFITE, S1256  -- 6810-00N089691
<pre>=====================  Product Identification  =====================

Product ID:SODIUM HYDROSULFITE, S1256
MSDS Date:06/27/1994
FSC:6810
NIIN:00N089691
Status Code:A
=== Responsible Party ===
Company Name:SIGMA CHEMICAL CO
Box:14508
City:ST LOUIS
State:MO
ZIP:63178
Country:US
Info Phone Num:800-325-3010
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 HYDROSULFITE
CAS:7775-14-6
RTECS #:JP2100000
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. EXPOSURE CAN CAUSE NAUSEA, H EADACHE & VOMITING. TO THE BEST
    OF MANUFACTURER'S KNOWLEDGE, THE CHEMICAL, PHYSICAL, &
    TOXICOLOGICAL (EFTS OF OVEREXP)
Explanation of Carcinogenicity:NOT RELEVANT.
Effects of Overexposure:HLTH HAZ: PROPERTIES HAVE NOT BEEN THOROUGHLY
    INVESTIGATED.
Medical Cond Aggravated by Exposure:NONE SPECIFIED BY MANUFACTURER.

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

First Aid:EYES/SKIN: IMMEDIATELY FLUSH WITH COPIOUS AMOUNTS OF WATER
    FOR AT LEAST 15 MINUTES WHILE REMOVING CONTAMINATED CLOTHING AND
    SHOES. INHAL: REMOVE TO FRESH AIR. IF NOT BREATHING GIVE ARTIFICIAL
    RESPIRAT ION. IF BREATHING IS DIFFICULT, GIVE OXYGEN. INGEST: WASH
    OUT MOUTH WITH WATER PROVIDED PERSON IS CONSCIOUS. CALL A
    PHYSICIAN. WASH CONTAMINATED CLOTHING BEFORE REUSE.

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

Extinguishing Media:CARBON DIOXIDE. DRY CHEMICAL POWDER. DO NOT USE
    WATER.
Fire Fighting Procedures:FLAMMABLE SOLID. USE NIOSH APPROVED SCBA &
    FULL PROTECTIVE EQUIPMENT .
Unusual Fire/Explosion Hazard:HEATS SPONTANEOUSLY ON CONTACT WITH AIR
    AND MOISTURE. MAY IGNITE SURROUNDING COMBUSTIBLE MATERIALS. EMITS
    TOXIC FUMES UNDER FIRE CONDITIONS. REDUCING AGENT.

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

Spill Release Procedures:EVACUATE AREA. SHUT OFF ALL SOURCES OF IGNIT.
    WEAR NIOSH APPRVD SCBA, RUBB BOOTS & HEAVY RUBB GLOVES. COVER
    W/DRY-LIME, SAND, OR SODA ASH. PLACE IN COVERED CNTNRS USING
    NON-SPARKING TOOLS & TRANSPORT  OUTDOORS. VENTILATE AREA & WASH
    SPILL SITE(SUPDAT)
Neutralizing Agent:NONE SPECIFIED BY MANUFACTURER.

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

Handling and Storage Precautions:DO NOT HEAT ABOVE 50C. DO NOT BREATHE
    DUST. DO NOT GET IN EYES, ON SKIN, ON CLOTHING. AVOID PROLONGED OR
    REPEATED EXPOSURE. IRRITANT.
Other Precautions:FLAMMABLE. MAY CAUSE FIRE. CONT W/ACIDS LIBERATES
    TOXIC GAS. IRRITATING TO EYES, RESP SYS & SKIN.

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

Respiratory Protection:WEAR APPROPRIATE NIOSH APPROVED RESPIRATOR.
Ventilation:MECHANICAL EXHAUST REQUIRED.
Protective Gloves:CHEMICAL-RESISTANT GLOVES.
Eye Protection:ANSI APPRVD CHEM WORKERS GOGGLES .
Other Protective Equipment:ANSI APPRVD EYE WASH & DELUGE SHOWER .
Work Hygienic Practices:WASH THOROUGHLY AFTER HANDLING.
Supplemental Safety and Health
SPILL PROC: AFTER MATERIAL PICKUP IS COMPLETE. WASTE DISP METH: MAY
    GENERATE HEAT & FUMES WHICH CAN BE CONTROLLED BY RATE OF ADDITION.
    OBSERVE ALL FEDERAL, STATE AND LOCAL ENVIRONMENTAL REGULATIONS.

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

Melt/Freeze Pt:M.P/F.P Text:>572F,>300C
Evaporation Rate &amp; Reference:NOT KNOWN
Solubility in Water:NOT KNOWN
Appearance and Odor:WHITE POWDER.

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

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

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

Waste Disposal Methods:FOR SM QTYS: CAUTIOUSLY ADD TO LG STIRRED EXCESS
    OF WATER. ADJUST PH TO NEUTRAL, SEPARATE ANY INSOL SOLIDS/LIQUIDS &
    PACKAGE THEM FOR HAZ-WASTE DISP. FLUSH AQUEOUS SOLN DOWN THE DRAIN
    W/PLENTY OF WATE R. HYDROLYSIS & NEUTRALIZATION REACTIONS (SUPDAT)

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