Product ID:SULFUROUS ACID,A 307-1
MSDS Date:07/03/1997
FSC:6810
NIIN:01-449-1595
MSDS Number: CFRNH

Emergency Phone: 201-796-7100/800-424-9300(CHEMTREC)

Info Phone: 201-796-7100 OR 201-796-7523

Cage: 1B464

Telephone: 201-796-7100

Cage: 1B464

SULFUROUS ACID

CAS: 7782-99-2

RTECS: WT2775000

Fraction By Weight: 100%

LD50 LC50 Mixture:LD50 (ORAL, RAT) IS UNKNOWN.
Routes of Entry: Inhalation:YES Skin:NO Ingestion:YES
Reports of Carcinogenicity:NTP:NO IARC:NO OSHA:NO
Health Hazards Acute and Chronic:TARGET ORGANS:EYES, SKIN, RESPIRATORY
& GI TRACTS. ACUTE- DANGER! CORROSIVE. INHALE:VAPORS EXTREMELY
IRRITATING. MAY CAUSE LUNG DAMAGE. EYES:CAUSES SEVERE BURNS. VAPORS
EXTREMELY IRRITATING. SKIN:CAUS ES SEVERE IRRITATION, ULCER, BURNS.
ORAL:CAUSES GASTROINTESTINAL TRACT BURNS, HEMORRHAGE, COMA.
CHRONIC- UNKNOWN.
Explanation of Carcinogenicity:NONE
Effects of Overexposure:SEVERE IRRITATION, SEVERE BURNS, PAIN, TEARING,
COUGHING, SWELLING, CONVULSION, COMA, DIARRHEA, HEMORRHAGE,
SHORTNESS OF BREATH
Medical Cond Aggravated by Exposure:PERSONS WITH PRE-EXISTING SKIN
DISORDERS, EYE PROBLEMS OR IMPAIRED RESPIRATORY FUNCTION MAY BE
MORE SUSCEPTIBLE TO THE EFFECTS OF THIS PRODUCT.

First Aid:GET MEDICAL ATTENTION IMMEDIATELY. INHALED:MOVE TO FRESH AIR.
PROVIDE CPR/OXYGEN IF NEEDED. EYES/SKIN:IMMEDIATELY FLUSH WITH
WATER FOR AT LEAST 15 MINUTES. HOLD EYELIDS OPEN. ORAL:DO NOT
INDUCE VOMITI NG. IF CONSCIOUS & ALERT, DRINK 2-4 CUPFULS OF
MILK/WATER. NEVER GIVE ANYTHING BY MOUTH TO AN UNCONSCIOUS PERSON.

Flash Point:NONE
Lower Limits:NOT RELEVANT
Upper Limits:NOT RELEVANT
Extinguishing Media:WATER SPRAY, CARBON DIOXIDE, FOAM OR DRY CHEMICAL
FOR SURROUNDING FIRE. USE WATER SPRAY TO COOL FIRE EXPOSED
CONTAINERS.
Fire Fighting Procedures:AS WITH ANY FIRE, WEAR PROTECTIVE CLOTHING AND
NIOSH-APPROVED SELF-CONTAINED BREATHING APPARATUS TO AVOID
INHALATION OF HAZARDOUS DECOMPOSTION PRODUCTS OR SMOKE
Unusual Fire/Explosion Hazard:CONTAINERS MAY RUPTURE. MAY FORM TOXIC
GASES.

Spill Release Procedures:WEAR PROTECTIVE EQUIPMENTS. VENTILATE AREA.
ABSORB SPILL WITH INERT MATERIAL SUCH AS SAND. PLACE INTO A
CHEMICAL WASTE CONTAINER. FLUSH SPILL AREA WITH WATER. SPILL MAY BE
NEUTRALIZED WITH LIME.
Neutralizing Agent:SODIUM BICARBONATE (BAKING SODA), SODA ASH, LIME

Handling and Storage Precautions:STORE IN COOL, DRY, VENTILATED AREA,
AWAY FROM STRONG ALKALIS. KEEP CONTAINER TIGHTLY CLOSED.
Other Precautions:CORROSIVE. DO NOT GET IN EYES, ON SKIN OR ON
CLOTHING. AVOID INHALATION OF VAPORS. KEEP OUT OF REACH OF
CHILDREN. EMPTY CONTAINER RETAINS RESIDUES. OBEY HAZARD WARNING
LABEL. FOR LABORATORY USE ONLY.

Respiratory Protection:FOR SYMPTOMS OF OVER EXPOSURE, WEAR
NIOSH-APPROVED RESPIRATOR WITH AN ACID CARTRIDGE. IN EMERGENCY,
WEAR A NIOSH-APPROVED POSITIVE-PRESSURE SELF-CONTAINED BREATHING
APPARATUS OR SUPPLIED-AIR RESPIRATO R.
Ventilation:LOCAL EXHAUST
Protective Gloves:PVC, NEOPRENE
Eye Protection:SAFETY GLASSES WITH SIDE SHIELDS/GOGGLES
Other Protective Equipment:SAFETY SHOWER AND EYE WASH FOUNTAIN SHOULD
BE LOCATED NEARBY. WEAR APPROPRIATE PROTECTIVE CLOTHING FOR RISK OF
EXPOSURE.
Work Hygienic Practices:OBSERVE GOOD INDUSTRIAL HYGIENE PRACTICES AND
RECOMMENDED PROCEDURES. WASH AFTER HANDLING AND BEFORE EATING OR
DRINKING.
Supplemental Safety and Health

HCC:C1
NRC/State Lic Num:NOT RELEVANT
Vapor Density:2.8
Spec Gravity:1.03
pH:ACID
Solubility in Water:SOLUBLE
Appearance and Odor:CLEAR, COLORLESS LIQUID - SULFUR ODOR
Percent Volatiles by Volume:100

Stability Indicator/Materials to Avoid:YES
STRONG ALKALIS
Stability Condition to Avoid:AIR
Hazardous Decomposition Products:SULFUR OXIDES

Waste Disposal Methods:DISCHARGE, TREATMENT OR DISPOSAL IS SUBJECT TO
LOCAL, STATE AND FEDERAL REGULATIONS. NEUTRALIZE WITH LIME AND
FLUSH TO SEWER WITH COPIOUS AMOUNT OF WATER, IF LOCAL ENVIRONMENTAL
REGULATIONS PERMIT.

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.