Product ID:360270 SULFUR DIOXIDE
MSDS Date:04/25/1995
FSC:6830
NIIN:00-302-7974
MSDS Number: CDRTV

Emergency Phone: 206-889-3400

Info Phone: 206-889-3400

Cage: DO735

Telephone: 425-889-3400/425-889-3617

Cage: 0STM5

SULFUR DIOXIDE

CAS: 7446-09-5

RTECS: WS4550000

Fraction By Weight: >99%

OSHA PEL 13 MG/CUM

ACGIH TLV: 5.2 MG/CUM

Routes of Entry: Inhalation:YES Skin:NO Ingestion:NO
Reports of Carcinogenicity:NTP:NO IARC:NO OSHA:NO
Health Hazards Acute and Chronic:INHALATION: >2 PPM-MUCOUS MEMBRANE &
PULMONARY IRRITATION. 50-100 PPM-DANGEROUS. 400-500 PPM-IMMEDIATELY
LIFE THREATENING. SKIN: CHEMICAL BURNS, SEVERE INJURY. ABSORPTION
OF HARMFUL AMOUNTS POSSIBLE. INGESTION: BURNS OF MOUTH, ESOPHAGUS
& STOMACH. EYES: CORNEAL BURNS & IRRITATION.
Explanation of Carcinogenicity:NONE
Effects of Overexposure:IRRITATION, BURNS, CHOKING, COUGHING,
BRONCHOCONSTRICTION, CONJUNCTIVAL INFLAMMATION.
Medical Cond Aggravated by Exposure:ASTHMA.

First Aid:INHALATION: REMOVE TO FRESH AIR. GIVE CPR IF NEEDED.
EYES/SKIN: IMMEDIATELY FLUSH W/PLENTY OF WATER FOR 15 MINS.
INGESTION: RINSE MOUTH W/WATER. GIVE 2 GLASSES OF WATER. DON'T
INDUCE VOMITING. OBTAIN MEDICAL ATTENTION IN ALL CASES. NOTE
TOPHYSICIAN: OBSERVE FOR SYMPTOMS OF PULMONARY EDEMA.

Flash Point:NON-FLAMMABLE
Extinguishing Media:USE MEDIA APPROPRIATE FOR SURROUNDING FIRE.
Fire Fighting Procedures:EVACUATE AREA. WEAR SCBA & PROTECTIVE
CLOTHING. COOL TANKS W/WATER SPRAY FROM MAXIMUM DISTANCE. USE WATER
SPRAY/FOG TO REDUCE VAPORS IF TANKS ARE LEAKING.
Unusual Fire/Explosion Hazard:PRESSURE BUILD-UP IN FIRE IMPINGED TANKS
MAY CAUSE RUPTURE & RELEASE OF GAS.

Spill Release Procedures:APPROACH FROM UPWIND. WEAR SCBA W/FULL
FACEPIECE. SECURE LEAKING VALVES, FLANGES, ETC BY TIGHTENING NUTS &
BOLTS/USE SOFT LEAD STRIPS/LEAD WOOL TO PLUG LEAK. SMALL: WILL
EVAPORATE IMMEDIATELY. 5 GALLO NS/MORE: WILL POOL & EVAPORATE OVER
AN (SUPP)
Neutralizing Agent:SODA ASH/LIME.

Handling and Storage Precautions:MUST BE STORED UNDER PRESSURE IN A
SAME CODED VESSEL. USE ONLY IN WELL-VENTILATED AREAS.

Respiratory Protection:WEAR A NIOSH/MSHA APPROVED FULL FACEPIECE
RESPIRATOR EQUIPPED W/ACID GAS CARTRIDGE FOR CONCENTRATIONS OF 50
PPM. WEAR SCBA OPERATED IN PRESSURE DEMAND/POSITIVE PRESSURE MODE
FOR HIGHER CONCENTRATIONS/ DURING EMERGENCIES.
Ventilation:CORROSION RESISTANT LOCAL EXHAUST TO MAINTAIN WORKPLACE
LEVELS Protective Gloves:NEOPRENE
Eye Protection:CHEMICAL SAFETY GLASSES/SPLASH GOGGLES
Other Protective Equipment:SAFETY SHOWERS & EYEWASH FOUNTAINS
Work Hygienic Practices:REMOVE/LAUNDER CONTAMINATED CLOTHING & SHOES
BEFORE REUSE.
Supplemental Safety and Health
INCOMPATIBLES: MANGANESE, ALKALI METALS, METAL NITRATES, RUBIDIUM
CARBIDE, SODIUM, FLUORINE, STANNOUS OXIDE, METAL OXIDES, METAL
HYDRIDES & ACROLEIN. SPILLS: EXTENDED PERIOD. EVACUATE DOWN-WIND
AREAS. USE WATER SPRAY/FOG TO REDUCE VAPOR CONCENTRATION.
CONTAIN/NEUTRALIZE ACIDIC WASTE GENERATED BY WATER SPRAY.

Boiling Pt:B.P. Text:14F
Melt/Freeze Pt:M.P/F.P Text:-104.62F
Vapor Pres:2539
Vapor Density:2.927
Spec Gravity:1.37
Solubility in Water:10%
Appearance and Odor:COLORLESS GAS W/PUNGENT, IRRITATING ODOR.
Percent Volatiles by Volume:100

Stability Indicator/Materials to Avoid:YES
OXIDIZING & REDUCING AGENTS, CHLORINE TRIFLUORINE, CHLORATES, SODIUM
CARBIDE, POWDERED ALUMINUM, ZINC & ITS ALLOYS(SUPP)
Stability Condition to Avoid:PHYSICAL DAMAGE TO CONTAINER, HEAT &
MOISTURE.

Waste Disposal Methods:CONTAIN ALL WATER CONTAMINATED W/SULFUR DIOXIDE.
NEUTRALIZE & DISPOSE OF IN A WASTE WATER TREATMENT SYSTEM/AS
ALLOWED IAW/FEDERAL, STATE & LOCAL REGULATIONS. POISON GAS UN1079.

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.