Product ID:SODIUM PYROSULFITE, SX0629
MSDS Date:03/01/1991
FSC:6810
NIIN:00N051779
MSDS Number: BVFHL

Emergency Phone: 800-424-9300 (CHEMTREC)

Info Phone: 609-354-9200

Cage: 0SK29

Telephone: 800-222-0342/609-423-6300

Cage: 63612

PYROSULFUROUS ACID, DISODIUM SALT; (SODIUM METABISULFITE)

CAS: 7681-57-4

RTECS: UX8225000

Fraction By Weight: 100%

OSHA PEL 5 MG/M3

ACGIH TLV: 5 MG/M3

LD50 LC50 Mixture:NONE SPECIFIED BY MANUFACTURER.
Routes of Entry: Inhalation:YES Skin:NO Ingestion:NO
Reports of Carcinogenicity:NTP:NO IARC:NO OSHA:NO
Health Hazards Acute and Chronic:HARMFUL IF INHALED. INHALATION OF
LARGE QUANTITIES CAN CAUSE EDEMA OF LUNGS, RESPIRATORY PARALYSIS.
MAY CAUSE IRRITATION ON CONTACT WITH SKIN, EYES OR MUCOUS
MEMBRANES. MAY BE HARMFUL IF SWALLOWED CAU SING IRRITATION OF
GASTROINTESTINAL TRACT. TESTS ON LAB ANIMALS INDICATE MATERIAL MAY
PRODUCE ADVERSE (EFTS OF OVEREXP)
Explanation of Carcinogenicity:NOT RELEVANT
Effects of Overexposure:HLTH HAZ: MUTAGENIC AND REPRODUCTIVE EFFECTS.
Medical Cond Aggravated by Exposure:DATA NOT AVAILABLE.

First Aid:GET MEDICAL ASSISTANCE FOR ALL CASES OF OVEREXPOSURE. SKIN:
WASH THOROUGHLY WITH SOAP & WATER. EYES: IMMEDIATELY FLUSH
THOROUGHLY WITH WATER FOR AT LEAST 15 MINUTES. INHALATION: REMOVE
TO FRESH AIR; G IVE ARTIFICIAL RESPIRATION IF BREATHINGHAS STOPPED.
INGESTION: DO NOT INDUCE VOMITING; IF CONSCIOUS, GIVE WATER FREELY
& GET MEDICAL ATTENTION.

Flash Point:NONCOMBUSTIBLE
Extinguishing Media:USE ANY SUITABLE FOR ADJACENT MATERIAL.
Fire Fighting Procedures:USE NIOSH/MSHA APPROVED SCBA AND FULL
PROTECTIVE EQUIPMENT .
Unusual Fire/Explosion Hazard:THERMAL DECOMPOSITION PRODUCES TOXIC
FUMES.

Spill Release Procedures:EVACUATE AREA OF ALL UNNEC PERS. WEAR SUITABLE
PROT EQUIP. ELIM ANY IGNIT SOURCES UNTIL AREA IS DETERM FREE FROM
EXPLO/FIRE HAZS. CNTN RELS & ELIM ITS SOURCE IF THIS CAN BE DONE
W/OUT RISK. TAKE UP & CONTAINERIZE FOR PROPER DISP. COMPLY
(SUPDAT)
Neutralizing Agent:NONE SPECIFIED BY MANUFACTURER.

Handling and Storage Precautions:KEEP CNTNR TIGHTLY CLSD & PROTECTED
AGAINST PHYSICAL DMG. STORE IN COOL, DRY, WELL-VENT AREA AWAY FROM
ACIDS & OXIDIZERS. DO NOT BREATHE DUST/VAPOR.
Other Precautions:DO NOT GET IN EYES, ON SKIN OR ON CLOTHING. HARMFUL
IF INHALED. EMITS TOXIC FUMES WHEN HEATED. MAY BE HARMFUL IF
SWALLOWED. MAY BE IRRITATING TO SKIN, EYES & MUCOUS MEMBRANES.

Respiratory Protection:IF WORKPLACE EXPOS LIM(S) OF PROD/COMPONENT IS
EXCEEDED, NIOSH/MSHA APPRVD AIR SUPPLIED RESP IS ADVISED IN ABSENCE
OF PROPER ENVIRON CTL. OSHA REGS PERMIT OTHER NIOSH/MSHA APPRVD
RESPS (NEG PRESS TYPE ) UNDER SPECIFIED CNDTNS. (SUPDAT)
Ventilation:MATERIAL MUST BE HANDLED OR TRANSFERRED IN AN APPROVED FUME
HOOD OR WITH EQUIVALENT VENTILATION.
Protective Gloves:NEOPRENE OR EQUIVALENT PROT GLOVES.
Eye Protection:ANSI APPRVD CHEM WORKERS GOGGLES .
Other Protective Equipment:EYE WASH AND DELUGE SHOWER WHICH MEET ANSI
DESIGN CRITERIA , AND SAFETY EQUIPMENT SHOULD BE READILY AVAILABLE.
Work Hygienic Practices:WASH THOROUGHLY AFTER HANDLING. DO NOT TAKE
INTERNALLY.
Supplemental Safety and Health
MP: 320F, 150C DECOMPOSES. SPILL PROC: W/FED, STATE & LOCAL REGS ON
REPORTING RELS. REFER TO REGULATORY INFO FOR REPORTABLE QTY & OTHER
REGULATORY DATA. RESP PROT: ENGINEERING &/OR ADMIN CONTROLS SHOU LD
BE IMPLEMENTED TO REDUCE EXPOSURE.

Melt/Freeze Pt:M.P/F.P Text:SUPDAT
Spec Gravity:1.48 (H*2O=1)
Solubility in Water:SOLUBLE
Appearance and Odor:WHITE CRYSTALS OR POWDER; SO*2 ODOR.

Stability Indicator/Materials to Avoid:YES
ACIDS, OXIDIZERS.
Stability Condition to Avoid:HEAT; GRADUALLY LOSES SO*2 ON EXPOSURE TO
AIR, EITHER IN SOLID OR SOLUTION FORM.
Hazardous Decomposition Products:SO*X, NA*2O.

Waste Disposal Methods:SPECIFIED TECHNOLOGY: CONTACT LOCAL PERMITTED
WASTE DISPOSAL SITE (TSD) FOR PERMISSIBLE TREATMENT SITES. ALWAYS
CONTACT A PERMITTED WASTE DISPOSER (TSD) TO ASSURE COMPLIANCE WITH
ALL CURRENT LOCAL, ST ATE & FEDERAL REGULATIONS. EPA WASTE NUMBER:
D003.

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.