Product ID:SULFUR DIOXIDE 1 TON, 16-08506-01
MSDS Date:11/04/1987
FSC:6830
NIIN:00N019834
MSDS Number: BLVJJ

THOMPSON-HAYWARD CHEMICAL CO

5200 SPEAKER RD
KANSAS CITY, KS 66106
US

Emergency Phone: 800-424-9300 (CHEMTREC)

Info Phone: 913-321-3131

Preparer: EDWARD E CHAPMAN

Cage: 5G633

THOMPSON-HAYWARD CHEMICAL CO

KANSAS CITY, KS 66106 US

Telephone: 913-321-3131

Cage: 5G633

CONGESTED AREA, EVERY EFFORT SHD BE MADE TO

RTECS: 9999999ZZ

BE EXPOSED. LEAKING SULFUR DIOXIDE CNTNR SHD BE

RTECS: 9999999ZZ

DIOXIDE WILL ESCAPE. SMALL LIQUEFIED SULFUR

RTECS: 9999999ZZ

SULFUR DIOXIDE THRU AN ALKALINE NEUT SOLN. ONE

RTECS: 9999999ZZ

OF LIME/ONE & 1/2 LBS OF CAUSTIC SODA. FLUSH

RTECS: 9999999ZZ

AREAS AS GAS IS HEAVIER THAN AIR.

RTECS: 9999999ZZ

ACCUMULATION/RECIRCULATION OF SULFUR DIOXIDE INTO

RTECS: 9999999ZZ

HLTH HAZARD TO HUMANS, ANIMALS, OR PLANTS.

RTECS: 9999999ZZ

SULFUR DIOXIDE

CAS: 7446-09-5

RTECS: WS4550000

Fraction By Weight: 100%

OSHA PEL 5 PPM/5 STEL

ACGIH TLV: 2 PPM/5 STEL; 9293

CLEAR VICTIM'S AIRWAY & START MOUTH-TO-MOUTH

RTECS: 9999999ZZ

RESP/MANUALLY TRIGGERED O*2 SUP CAPABLE OF

RTECS: 9999999ZZ

MAY BE DELIVERED FROM DEMAND-TYPE/CONT-FLOW

RTECS: 9999999ZZ

VOMIT. IMMED GIVE LRG QTYS OF H*2O. IF VOMIT DOES

RTECS: 9999999ZZ

PVNT ASPIR. NEVER GIVE ANYTHING BY MOUTH TO AN UNCON

RTECS: 9999999ZZ

OBSERVE FOR PULMONARY EDEMA.

RTECS: 9999999ZZ

STEPS SHD BE TAKEN TO OVERCOME TROUBLE AS

RTECS: 9999999ZZ

CORRECTED PROMPTLY. SMALL LEAKS MAY BE READILY

RTECS: 9999999ZZ

HYDROXIDE SOLN. DENSE WHITE FUME WILL FORM IF

RTECS: 9999999ZZ

DIOXIDE LEAK. APPLIC OF H*2O MAKES SULFUR

RTECS: 9999999ZZ

LD50 LC50 Mixture:NONE SPECIFIED BY MANUFACTURER.
Routes of Entry: Inhalation:YES Skin:YES Ingestion:YES
Reports of Carcinogenicity:NTP:NO IARC:NO OSHA:NO
Health Hazards Acute and Chronic:EYES: CORR. GAS IS IRRIT TO EYE PRDCG
BURNING & CORNEAL DAMAGE. SKIN: CORR. CONT W/SKIN WILL CAUSE BURNS.
POS FROZEN TISSUE FROM LIQ. INHAL: INHAL OF SULFUR DIOXIDE GAS WILL
RSLT IN IRRIT OF EYES, THR OAT & UPPER RESP SYS. INHAL EXPOS TO
CONC OF 8-12 PPM SULFUR DIOXIDE GAS CAUSES THROAT IRRIT, (SEE EFTS
OF OVEREXP)
Explanation of Carcinogenicity:NOT RELEVANT.
Effects of Overexposure:HLTH HAZ: COUGHING, CONSTRICTION OF CHEST,
TEARING & IRRIT OF EYES. INHAL EXPOS TO CONC OF 150 PPM SULFUR
DIOXIDE GAS IS SO IRRIT THAT IT CAN BE ENDURED FOR ONLY A FEW MIN.
INHAL EXPOS TO CONC OF 500 PPM SULFUR DIOXIDE GAS IS SO INTENSELY
IRRIT THAT IT CAUSES SENSE OF SUFFOCATION. INGEST: INGEST OF LIQ
(SUPP DATA)
Medical Cond Aggravated by Exposure:RESPIRATION AFFLICTIONS I.E. ASTHMA
OR EMPHYSEMA.

First Aid:EYE: IMMED FLUSH EYES W/LRG QTYS OF RUNNING H2O FOR AT LEAST
15 MIN. HOLD EYELIDS APART TO ENSURE FLUSHING OF ENTIRE EYE SURF.
GET MED ATTN. SKIN: IMMED REMOVE CONTAM CLTHG WIPING AWAY EXCESS
MATL FRO M SKIN. UNDER SFTY SHOWER, FLUSH ALL AFFECTED AREAS W/LRG
AMTS OF H2O FOR AT LEAST 15 MIN. DO NOT ATTEMPT TO NEUT W/CHEM
AGENTS. OBTAIN MED ADVICE IMMED. INHAL: REMOVE FROM CONTAM (SUPP
DATA)

Flash Point:NOT FLAMMABLE
Extinguishing Media:IN FIRES WHERE SULFUR DIOXIDE PRESENT WATER SPRAY
OR FOG, DRY CHEMICAL, FOAM, CARBON DIOXIDE CAN BE USED.
Fire Fighting Procedures:USE NIOSH/MSHA APPROVED SCBA AND FULL
PROTECTIVE EQUIPMENT . SULFUR DIOXIDE FLOW SHD BE STOPPED & CNTNRS
MOVED AWAY FROM FIRE AREA.
Unusual Fire/Explosion Hazard:KEEP CNTNRS COOL WITH WATER SPRAY TO PVNT
RELIEF VALVES FROM POPPING, THEREBY RELEASING SULFUR DIOXIDE GAS.
CNTNRS HAVE FUSIBLE METAL PLUGS WHICH MELT AT 165 F.

Spill Release Procedures:CONT SUP/MFR FOR ASSISTANCE. ONLY TRAINED
PERSONNEL EQUIP W/GAS MASKS &/OR SCBA SHD ATTEMPT REPAIRS ON
LEAKING SULFUR DIOXIDE EQUIP. PROT CLTHG SHD BE WORN TO PVNT SKIN &
EYE CONT. OCCASIONALLY, CNTNR S MAY DEVELOP LEAKS. IN SUCH CASES,
IMMED (ING 8)
Neutralizing Agent:NONE SPECIFIED BY MANUFACTURER.

Handling and Storage Precautions:STORE CONTAINERS WHERE TEMP OF LIQUID
WILL NOT REACH 125F. UNINSULATED TANKS SHD BE PROVIDED WITH A SHED
ROOF.
Other Precautions:STORAGE TANKS (EXCEPT CYLINDERS) MUST BE EQUIPPED W/
APPRVD SAFETY VENT VALVES AT 225 PSIG PRESS. SULFUR DIOXIDE CONTAM
W/WATER WILL RAPIDLY CORRODE STEEL. MUST BE STORED UNDER PRESSURE
IN AN ASME COD ED VESSEL. USE ONLY IN WELL VENT AREAS.

Respiratory Protection:WHERE ADEQ VENT IS NOT AVAILABLE & THERE IS POS
OF GAS/LIQ RELS, CNTRL OF LOW-LEVEL INHAL EXPOS CAN BE ACHIEVED
THRU USE OF A NIOSH/MSHA APPROVED FULL-FACE-PIECE, ACID-GAS
CARTRIDGE, AIR-PURIFYING RES PIRATOR.
Ventilation:EXHST VENT & ENCLOSURE PROCESSES SHALL BE USED WHEREVER
PRACTICAL. SYS SHALL BE DESIGNED & MAINTAINED TO PVNT (ING 18)
Protective Gloves:RUBBER GLOVES.
Eye Protection:CHEM WORK GOG & FULL LGTH FACESHLD
Other Protective Equipment:WEAR HARD HATS, IMPERVIOUS CLOTHING &
FOOTWEAR. SAFETY SHOWER, EYE BATH & WASHING FACILITIES SHOULD BE
AVAILABLE.
Work Hygienic Practices:WASH W/SOAP&H2O BEFORE EATING,DRINKING,SMOKING/
USING TOILET FACILITIES. REMOVE CONTAM CLTHG/FOOTWEAR&WASH BEFORE
REUSE
Supplemental Safety and Health
MATLS TO AVOID: UNSTABLE CHLORINE DIOXIDE. CORR TO ZINC. KEEP AWAY FROM
GALVANIZED MATLS. PRESS OF CYLINDERS & TANKS RAPIDLY RISE IN FIRE.
AVOID OXIDIZING AGENTS. EFTS OF OVEREXP: SULFUR DIOXIDE WILL RSLT
IN BURNS OF MOUTH & GI TRACT DUE TO FREEZING EFT OF LIQ. FIRST AID
PROC: ATMOSPHERE. IF BRTHG HAS CEASED, (ING 2)

HCC:G1
Boiling Pt:B.P. Text:14F,-10C
Vapor Pres:760 @ 14 F
Vapor Density:2.26
Spec Gravity:1.36 @ 77 F
Evaporation Rate & Reference:>1 (ETHYL ETHER=1)
Solubility in Water:GAS: 11G/100G @ 68 F
Appearance and Odor:COLORLESS GAS AND LIQUID; SHARP, SUFFOCATING,
PUNGENT ODOR.
Percent Volatiles by Volume:100

Stability Indicator/Materials to Avoid:YES
IN LIQ STATE, WILL REACT VIOLENTLY W/ALKALIS & ACT AS ACID. IN PRESENCE
OF CHLORATES, IT REACTS TO FORM (SUPP DATA)
Stability Condition to Avoid:NONE SPECIFIED BY MANUFACTURER.
Hazardous Decomposition Products:NO HAZARDOUS DECOMPOSITION PRODUCTS
KNOWN.

Waste Disposal Methods:SINCE SULFUR DIOXIDE VAP AT ATMOSPHERIC PRESS &
TEMP ABOVE 14 F, THERE IS NO NORMAL LIQ DISP PROBLEM, ONLY GASEOUS.
IF GAS CANNOT BE VENT INTO ALKALINE SOLN, PROVIDE VENT FOR DILUTION
& DISPERSION. DO NOT DISPERSE IN LOW LYING STAGNANT (SEE ING 17)

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.