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MSDS Material Safety Data Sheet
CAS

7681-57-4

File Name: palomar_edu---sodium_metabisulfite_acs_reagent.asp
             PRODUCT #: S1516        NAME: SODIUM METABISULFITE ACS REAGENT
MATERIAL SAFETY DATA SHEET, Valid 11/97 - 1/98
Printed Tuesday, March 18, 1903 11:07AM

Sigma Chemical Co. Aldrich Chemical Co., Inc. Fluka Chemical Corp.
P.O. Box 14508 1001 West St. Paul 1001 West St. Paul
St. Louis, MO 63178 Milwaukee, WI 53233 Milwaukee, WI 53233
Phone: 314-771-5765 Phone: 414-273-3850 Phone: 414-273-3850




SECTION 1. - - - - - - - - - CHEMICAL IDENTIFICATION- - - - - - - - - -
CATALOG #: S1516
NAME: SODIUM METABISULFITE ACS REAGENT
SECTION 2. - - - - - COMPOSITION/INFORMATION ON INGREDIENTS - - - - - -
CAS #: 7681-57-4
MF: NA2O5S2
EC NO: 231-673-0
SYNONYMS
DISODIUM DISULFITE * DISODIUM METABISULFITE * DISODIUM PYROSULFITE *
DISULFUROUS ACID, DISODIUM SALT * SODIUM DISULFITE * SODIUM
METABISULFITE (ACGIH) * SODIUM METABISULPHITE * SODIUM PYROSULFITE *
SECTION 3. - - - - - - - - - - HAZARDS IDENTIFICATION - - - - - - - - -
LABEL PRECAUTIONARY STATEMENTS
TOXIC (USA)
HARMFUL (EU)
HARMFUL BY INHALATION, IN CONTACT WITH SKIN AND IF SWALLOWED.
CAUSES SEVERE IRRITATION.
POSSIBLE SENSITIZER.
IN CASE OF CONTACT WITH EYES, RINSE IMMEDIATELY WITH PLENTY OF
WATER AND SEEK MEDICAL ADVICE.
WEAR SUITABLE PROTECTIVE CLOTHING.
SECTION 4. - - - - - - - - - - FIRST-AID MEASURES- - - - - - - - - - -
IN CASE OF CONTACT, IMMEDIATELY FLUSH EYES WITH COPIOUS AMOUNTS OF
WATER FOR AT LEAST 15 MINUTES.
IN CASE OF CONTACT, IMMEDIATELY WASH SKIN WITH SOAP AND COPIOUS
AMOUNTS OF WATER.
IF INHALED, REMOVE TO FRESH AIR. IF NOT BREATHING GIVE ARTIFICIAL
RESPIRATION. IF BREATHING IS DIFFICULT, GIVE OXYGEN.
IF SWALLOWED, WASH OUT MOUTH WITH WATER PROVIDED PERSON IS CONSCIOUS.
CALL A PHYSICIAN.
WASH CONTAMINATED CLOTHING BEFORE REUSE.
SECTION 5. - - - - - - - - - FIRE FIGHTING MEASURES - - - - - - - - - -
EXTINGUISHING MEDIA
DRY CHEMICAL POWDER.
SPECIAL FIREFIGHTING PROCEDURES
WEAR SELF-CONTAINED BREATHING APPARATUS AND PROTECTIVE CLOTHING TO
PREVENT CONTACT WITH SKIN AND EYES.
UNUSUAL FIRE AND EXPLOSIONS HAZARDS
EMITS TOXIC FUMES UNDER FIRE CONDITIONS.
SECTION 6. - - - - - - - - ACCIDENTAL RELEASE MEASURES- - - - - - - - -
EVACUATE AREA.
WEAR 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 SITE AFTER MATERIAL PICKUP IS COMPLETE.
SECTION 7. - - - - - - - - - - HANDLING AND STORAGE- - - - - - - - - - -
REFER TO SECTION 8.
ADDITIONAL INFORMATION

Page 1
PRODUCT #: S1516 NAME: SODIUM METABISULFITE ACS REAGENT
MATERIAL SAFETY DATA SHEET, Valid 11/97 - 1/98
Printed Tuesday, March 18, 1903 11:07AM

MIXING WITH SODIUM NITRITE RESULTS IN A VIGOROUS EXOTHERMIC REACTION.
SECTION 8. - - - - - - EXPOSURE CONTROLS/PERSONAL PROTECTION- - - - - -
WEAR APPROPRIATE NIOSH/MSHA-APPROVED RESPIRATOR, CHEMICAL-RESISTANT
GLOVES, SAFETY GOGGLES, OTHER PROTECTIVE CLOTHING.
SAFETY SHOWER AND EYE BATH.
USE ONLY IN A CHEMICAL FUME HOOD.
DO NOT BREATHE DUST.
DO NOT GET IN EYES, ON SKIN, ON CLOTHING.
AVOID PROLONGED OR REPEATED EXPOSURE.
WASH THOROUGHLY AFTER HANDLING.
TOXIC.
SEVERE IRRITANT.
POSSIBLE SENSITIZER.
KEEP TIGHTLY CLOSED.
AIR AND MOISTURE SENSITIVE
STORE IN A COOL DRY PLACE.
SECTION 9. - - - - - - - PHYSICAL AND CHEMICAL PROPERTIES - - - - - - -
APPEARANCE AND ODOR
WHITE CRYSTALLINE POWDER
PHYSICAL PROPERTIES
SPECIFIC GRAVITY: 1.480
SECTION 10. - - - - - - - - -STABILITY AND REACTIVITY - - - - - - - - -
INCOMPATIBILITIES
STRONG ACIDS
STRONG OXIDIZING AGENTS
AIR SENSITIVE
MOISTURE SENSITIVE
HAZARDOUS COMBUSTION OR DECOMPOSITION PRODUCTS
SULFUR OXIDES
SECTION 11. - - - - - - - - - TOXICOLOGICAL INFORMATION - - - - - - - -
ACUTE EFFECTS
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.
PROLONGED OR REPEATED EXPOSURE MAY CAUSE ALLERGIC REACTIONS IN CERTAIN
SENSITIVE INDIVIDUALS.
EXPOSURE CAN CAUSE:
COUGHING, CHEST PAINS, DIFFICULTY IN BREATHING.
STOMACH PAINS, VOMITING, DIARRHEA.
ADDITIONAL INFORMATION
WARNING: CERTAIN INDIVIDUALS WITH PREEXISTING RESPIRATORY CONDITIONS
SUCH AS ASTHMA MAY EXPERIENCE HYPERSENSITIVITY TO SULFITES AND SULFUR
DIOXIDE. THE SYMPTOMS INCLUDE BRONCHOCONSTRICTION, BRONCHOSPASM,
GASTROINTESTINAL DISTURBANCES, FLUSHING, HYPOTENSION, TINGLING
SENSATION, URTICARIA/ANGIOEDEMA AND SHOCK.
RTECS #: UX8225000
PYROSULFUROUS ACID, DISODIUM SALT
TOXICITY DATA
IVN-RAT LD50:115 MG/KG 85INA8 6,1418,1991
PAR-MUS LD50:910 MG/KG RPTOAN 31,120,1968
ADDITIONAL INFORMATION
ORL-RAT LD50: 500 MG/KG
ONLY SELECTED REGISTRY OF TOXIC EFFECTS OF CHEMICAL SUBSTANCES

Page 2
PRODUCT #: S1516 NAME: SODIUM METABISULFITE ACS REAGENT
MATERIAL SAFETY DATA SHEET, Valid 11/97 - 1/98
Printed Tuesday, March 18, 1903 11:07AM

(RTECS) DATA IS PRESENTED HERE. SEE ACTUAL ENTRY IN RTECS FOR
COMPLETE INFORMATION.
SECTION 12. - - - - - - - - - ECOLOGICAL INFORMATION - - - - - - - - - -
DATA NOT YET AVAILABLE.
SECTION 13. - - - - - - - - - DISPOSAL CONSIDERATIONS - - - - - - - - -
FOR SMALL QUANTITIES: CAUTIOUSLY ADD TO A LARGE STIRRED EXCESS OF
WATER. ADJUST THE PH TO NEUTRAL, SEPARATE ANY INSOLUBLE SOLIDS OR
LIQUIDS AND PACKAGE THEM FOR HAZARDOUS-WASTE DISPOSAL. FLUSH THE
AQUEOUS SOLUTION DOWN THE DRAIN WITH PLENTY OF WATER. THE HYDROLYSIS
AND NEUTRALIZATION REACTIONS MAY GENERATE HEAT AND FUMES WHICH CAN BE
CONTROLLED BY THE RATE OF ADDITION.
OBSERVE ALL FEDERAL, STATE AND LOCAL ENVIRONMENTAL REGULATIONS.
SECTION 14. - - - - - - - - - - TRANSPORT INFORMATION - - - - - - - - -
CONTACT SIGMA CHEMICAL COMPANY FOR TRANSPORTATION INFORMATION.
SECTION 15. - - - - - - - - - REGULATORY INFORMATION - - - - - - - - - -
EUROPEAN INFORMATION
HARMFUL
R 20/21/22
HARMFUL BY INHALATION, IN CONTACT WITH SKIN AND IF SWALLOWED.
S 26
IN CASE OF CONTACT WITH EYES, RINSE IMMEDIATELY WITH PLENTY OF
WATER AND SEEK MEDICAL ADVICE.
S 36
WEAR SUITABLE PROTECTIVE CLOTHING.
REVIEWS, STANDARDS, AND REGULATIONS
OEL=MAK
ACGIH TLV-NOT CLASSIFIABLE AS A HUMAN CARCINOGEN DTLVS* TLV/BEI,1996
ACGIH TLV-TWA 5 MG/M3 DTLVS* TLV/BEI,1996
IARC CANCER REVIEW:HUMAN INADEQUATE EVIDENCE IMEMDT 54,131,1992
IARC CANCER REVIEW:ANIMAL INADEQUATE EVIDENCE IMEMDT 54,131,1992
IARC CANCER REVIEW:GROUP 3 IMEMDT 54,131,1992
OEL-AUSTRALIA:TWA 5 MG/M3 JAN 1993
OEL-BELGIUM:TWA 5 MG/M3 JAN 1993
OEL-DENMARK:TWA 5 MG/M3 JAN 1993
OEL-FRANCE:TWA 5 MG/M3 JAN 1993
OEL-THE NETHERLANDS:TWA 5 MG/M3 JAN 1993
OEL-SWITZERLAND:TWA 5 MG/M3 JAN 1993
OEL-UNITED KINGDOM:TWA 5 MG/M3 JAN 1993
OEL IN BULGARIA, COLOMBIA, JORDAN, KOREA CHECK ACGIH TLV
OEL IN NEW ZEALAND, SINGAPORE, VIETNAM CHECK ACGIH TLV
NIOSH REL TO SODIUM METABISULFITE-AIR:10H TWA 5 MG/M3
NIOSH* DHHS #92-100,1992
NOES 1983: HZD X4004; NIS 73; TNF 8367; NOS 68; TNE 88236; TFE 28696
EPA GENETOX PROGRAM 1988, NEGATIVE: TRP REVERSION
EPA TSCA SECTION 8(B) CHEMICAL INVENTORY
EPA TSCA SECTION 8(D) UNPUBLISHED HEALTH/SAFETY STUDIES
EPA TSCA TEST SUBMISSION (TSCATS) DATA BASE, APRIL 1997
SECTION 16. - - - - - - - - - - OTHER INFORMATION- - - - - - - - - - - -
THE ABOVE INFORMATION IS BELIEVED TO BE CORRECT BUT DOES NOT PURPORT TO
BE ALL INCLUSIVE AND SHALL BE USED ONLY AS A GUIDE. SIGMA, ALDRICH,
FLUKA SHALL NOT BE HELD LIABLE FOR ANY DAMAGE RESULTING FROM HANDLING
OR FROM CONTACT WITH THE ABOVE PRODUCT. SEE REVERSE SIDE OF INVOICE OR
PACKING SLIP FOR ADDITIONAL TERMS AND CONDITIONS OF SALE.
COPYRIGHT 1997 SIGMA CHEMICAL CO., ALDRICH CHEMICAL CO., INC.,
FLUKA CHEMIE AG
LICENSE GRANTED TO MAKE UNLIMITED PAPER COPIES FOR INTERNAL USE ONLY


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