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MSDS  : SODIUM METABISULFITE, 97+%, A.C.S. REAGENT,
CAS  : 7681-57-4
NAME  : pyrosulfurous acid, disodium salt; (sodium metabisulfite,
===================== Product Identification =====================

MSDS NAME:SODIUM METABISULFITE, 97+%, A.C.S. REAGENT,
NIIN:00N027320
MSDS Number: BQVQN
=== Responsible Party ===
Company:ALDRICH CHEMICAL CO
Box:355
City:MILWAUKEE
State:WI
ZIP:53201
Country:US
Info Phone Num:414-273-3850
Emergency Phone Num:414-273-3850
CAGE:60928
=== Contractor Identification ===
Company:ALDRICH CHEMICAL CO INC
Address:1001 WEST ST PAUL AVE
Box:355
City:MILWAUKEE
State:WI
ZIP:53233
Country:US
Phone:414-273-3850
CAGE:60928

============= Composition/Information on Ingredients =============

Name:PYROSULFUROUS ACID, DISODIUM SALT; (SODIUM METABISULFITE,
A.C.S. REAGENT)
CAS:7681-57-4
RTECS #:UX8225000
Fraction by Wt: 97%+%
OSHA PEL:5 MG/M3
ACGIH TLV:5 MG/M3

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

LD50 LC50 Mixture:NONE SPECIFIED BY MANUFACTURER.
Routes of Entry: Inhalation:YES Skin:YES Ingestion:NO
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/SKIN IRRITATION. MATERIAL
IS IRRITATING TO MUCOUS MEMBRANES AND UPPER RESPIRATORY TRACT.
PROLONGED OR REPEATED EXPOSURE M AY CAUSE ALLERGIC REACTIONS IN
CERTAIN SENSITIVE INDIVIDUALS. EXPOSURE CAN CAUSE: COUGHING, CHEST
(EFTS OF OVEREXP)
Explanation of Carcinogenicity:NOT RELEVANT
Effects of Overexposure:HLTH HAZ: PAINS, DIFFICULTY IN BREATHING.
STOMACH PAINS, VOMITING, DIARRHEA. PERSONS WITH ALLERGIES &/OR
ASTHMA MAY EXHIBIT HYPERSENSITIVITY TO SULFITES.
Medical Cond Aggravated by Exposure:NONE SPECIFIED BY MANUFACTURER.

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

Eyes: IMMED FLUSH WITH COPIOUS AMOUNTS OF WATER FOR AT LEAST
15 MINUTES. SKIN: WASH WITH SOAP AND COPIOUS AMOUNTS OF WATER. WASH
CONTAMINATED CLOTHING BEFORE REUSE. INHAL: REMOVE TO FRESH AIR. IF
NOT BREATHING GIVE ARTIFICIAL RESPIRATION. IF BREATHING IS
DIFFICULT, GIVE OXYGEN. INGEST: WASH OUT MOUTH WITH WATER PROVIDED
PERSON IS CONSCIOUS. CALL A PHYSICIAN.

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

Extinguishing Media:NONCOMBUSTIBLE. USE EXTINGHISHING MEDIA APPROPRIATE
TO SURROUNDING FIRE CONDITIONS.
Fire Fighting Procedures:WEAR NIOSH/MSHA 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/MSHA APPROVED SCBA,
RUBBER BOOTS & HEAVY RUBBER GLOVES. SWEEP UP, PLACE IN A BAG AND
HOLD FOR WASTE DISPOSAL. AVOID RAISING DUST. VENTILATE AREA & WASH
SPILL SITE AFTER MATER IAL PICKUP IS COMPLETE.
Neutralizing Agent:NONE SPECIFIED BY MANUFACTURER.

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

Handling and Storage Precautions:KEEP TIGHTLY CLOSED. STORE IN A COOL
DRY PLACE. DO NOT BREATHE DUST. AVOID CONT W/EYES/SKIN/CLTHG. AVOID
PRLNGD/RPTD EXPOS. IRRITANT. POSS SENSITIZER.
Other Precautions:AIR & MOISTURE SENSITIVE.

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

Respiratory Protection:WEAR APPROPRIATE NIOSH/MSHA APPROVED RESPIRATOR.
Ventilation:MECHANICAL EXHAUST REQUIRED.
Protective Gloves:CHEMICAL-RESISTANT GLOVES.
Eye Protection:CHEMICAL WORKERS GOGGLES .
Other Protective Equipment:SAFETY SHOWER & EYE BATH, OTHER PROTECTIVE
CLOTHING. RUBBER BOOTS.
Work Hygienic Practices:WASH THOROUGHLY AFTER HANDLING.
Supplemental Safety and Health
WASTE DISP METH: WHICH CAN BE CONTROLLED BY RATE OF ADDN. DISPOSE OF
I/A/W FEDERAL, STATE AND LOCAL REGULATIONS .

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

Spec Gravity:1.480
Appearance and Odor:WHITE CRYSTALLINE POWDER.

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

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

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

Waste Disposal Methods:FOR SM QTY: CAUTIOUSLY ADD TO A LG STIRRED
EXCESS OF WATER. ADJUST PH TO NEUT, SEPARATE ANY INSOL SOLIDS/LIQ &
PKG THEM FOR HAZ-WASTE DISP. FLUSH AQUEOUS SOLN DOWN DRAIN W/PLENTY
OF WATER. HYDROLYSIS & NEUT RXN MAY GENERATE HEAT & FUMES (SUPP
DATA)

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.

*** END OF RECORD ***
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