Product ID:SULFUR DIOXIDE
MSDS Date:02/01/1991
FSC:6830
NIIN:00N016369
MSDS Number: BLBPR

AIR PRODUCTS & CHEMICALS CO

7201 HAMILTON BLVD
ALLENTOWN, PA 18195-1501
US

Emergency Phone: 800-322-9092 OR 800-523-9374

Info Phone: 215-481-8257

Cage: 00742

AIR PRODUCTS AND CHEMICALS INC

ALLENTOWN, PA 18195-1501 US

Telephone: 800-345-3148/ 800-752-1597

Cage: 00742

PROMPTLY IF CRYOGENIC "BURN" HAS RESULTED IN

RTECS: 9999999ZZ

OUTLET SEALS SECURED & VALVE PROT CAP IN

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PHONE NUMBER LISTED HEREIN.

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DISCHARGE LINE TO PVNT HAZ BACKFLOW INTO CYL.

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TECH INFO SECTION/COMPRESSED GAS ASSOC PAMPHLET P-1.

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OTHER COMMON CONSTRUCTION METALS EXCEPT ZINC.MOST

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& SULFUR DIOXIDE. STAINLESS STEEL TYPE 316 CAN BE

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CYLS SHOULD NOT BE REFILLED EXCEPT BY QUALIFIED

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GAS CYL WHICH HAS NOT BEEN FILLED BY OWNER OR

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MAY ADD FULL LENGTH FACESHIELD TO GOGGLES .

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SULFUR DIOXIDE (SARA III)

CAS: 7446-09-5

RTECS: WS4550000

OSHA PEL 5 PPM/5 STEL

ACGIH TLV: 2 PPM/5 STEL; 9293

EXTREMELY DESTRUCTIVE TO TISS OF AIRWAY, EYES &

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OF SPASM, INFLAMM & EDEMA OF LARYNX & BRONCHI, CHEM

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MAY RESULT IN ULCERATION OF CONJUNCTIVA & CORNEA &

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SEVERE BURNS. SYSTEMIC TOX DUE TO SULFUR DIOXIDE IS

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COLOR OF SKIN TO GRAY OR WHITE, POSSIBLY FOLLOWED BY

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FLUSH W/LG QTYS OF WATER FOR AT LEAST 15

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FLUSH W/LG QTYS OF WATER. REMOVE CLTHG

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REMOVE CONTAMD CLTHG & FLUSH W/LUKEWARM

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LD50 LC50 Mixture:NONE SPECIFIED BY MANUFACTURER.
Routes of Entry: Inhalation:YES Skin:NO Ingestion:NO
Reports of Carcinogenicity:NTP:NO IARC:NO OSHA:NO
Health Hazards Acute and Chronic:CORR/IRRIT TO UPPER/LOWER RESP TRACTS,
SKIN/EYES. SYMPS DEPEND ON CONC/DURATION OF EXPOS & VARY FROM MILD
IRRIT TO SEVERE DESTRUCTION OF TISS. MAY ALSO INCLD BURNING
SENSATIONS, COUGH, WHEEZING, LARYN GITIS, SHORT OF BREATH, HDCH,
NAUSEA & VOM. IF SULFUR DIOXIDE PENETRATES LOWER AIRWAY, CAN PRDCE
(SEE EFTS OF OVEREXP)
Explanation of Carcinogenicity:NOT RELEVANT
Effects of Overexposure:HLTH HAZ:BRONCH, CHEM PNEUM/PULM EDEMA. EYE
CNTCT RESULTS IN PAIN, TEARING, INFLAMM, SWELLING OF TISS & POSS
DESTRUCTION OF EYE. SKIN CNTCT CAUSES IRRIT/CHEM-LIKE BURNS. CNTCT
W/RAPIDLY EVAP LIQ CAN C AUSE CRYOGENIC "BURNS"/FROSTBITE. EXPOSTO
ATM CONTAMD W/SULFUR DIOXIDE IS EXTREMELY IRRIT. ODOR & PROMPT
(SUPP DATA)
Medical Cond Aggravated by Exposure:NONE SPECIFIED BY MANUFACTURER.

First Aid:PROMPT MD ATTN IS REQ IN ALL CASES OF OVEREXP. RESCUE
PERSONNEL SHOULD BE EQUIPPED W/APPROP PROT EQUIP (SCBA) TO PVNT
UNNEC EXPOS. INHAL:MOVE TO UNCONTAMD AREA. IF NOT BRTHG GIVE ARTF
RESP, PREF MOUTH -TO-MOUTH. IF BRTHG DFCLT, GIVE O*2. KEEP
WARM/QUIET. ASSUME MUCUS/VOMITED MATL DOES NOT OBSTRUCT AIRWAY BY
POSITIONAL DRAINAGE. MD SHOULD BE INFORMED THAT PATIENT INHALED
ACIDIC VAPS. (SEE ING 7)

Extinguishing Media:NONFLAMMABLE GAS. WILL EXTINGUISH FIRE.
Fire Fighting Procedures:IF POSS W/O RISK, MOVE CYLS AWAY FROM FIRE
AREA. FROM SAFE DISTANCE, COOL CYLS W/WATER SPRAY UNTIL WELL AFTER
FIRE OUT. WEAR NIOSH/MSHA APPRVD SCBA &(SUPP DATA)
Unusual Fire/Explosion Hazard:CYLINDERS THAT HAVE BEEN EXPOSED TO FIRE
OR HEAT MAY VENT RAPIDLY OR EXPLODE.

Spill Release Procedures:EVACUATE PERSONNEL FROM AFFECTED AREA. USE
APPROP PROT EQUIP. IF LEAK IS IN USER'S EQUIP, BE CERTAIN TO PURGE
PIPING W/AN INERT GAS PRIOR TO ATTEMPTING REPAIRS. IF LEAK IS IN
CYLINDER/CYLINDER VALVE, CALL THE "800" EMER PHONE NUMBER
LISTEDHEREIN.
Neutralizing Agent:NONE SPECIFIED BY MANUFACTURER.

Handling and Storage Precautions:USE ONLY IN WELL-VENT AREAS. VALVE
PROT CAPS MUST REMAIN IN PLACE UNLESS CYL IS SECURED W/VALVE OUTLET
PIPED TO USE PT. DO NOT DRAG/SLIDE/ROLL CYLS.
Other Precautions:USE SUITABLE HAND TRUCK FOR CYL MOVEMENT. USE PRESS
REDUCING REGULATOR WHEN CONNECTING CYL TO LOWER PRESS (<150 PSIG)
PIPING/SYS. DO NOT HEAT CYL BY ANY MEANS TO INCR DISCHARGE RATE OF
PROD FROM CYS. USE CHECK VALVE/TRAP IN (SEE ING 13)

Respiratory Protection:NIOSH/MSHA APPROVED POSITIVE PRESSURE AIR LINE
W/RESPIRATOR OR SCBA SHOULD BE AVAILABLE FOR EMERGENCY USE.
Ventilation:USE HOOD W/FORCED VENT &/OR LOC EXHAUST TO PVNT
ACCUMULATION ABOVE TWA. HEAVY VAPS REQUIRE GOOD FLOOR-LEVEL VENT.
Protective Gloves:PLASTIC OR RUBBER GLOVES.
Eye Protection:CHEMICAL WORKERS GOGGLES, (SEE ING 19)
Other Protective Equipment:SAFETY SHOES, SAFETY SHOWER, EYEWASH
FOUNTAIN, CHEMICAL RESISTANT OVERGARMENTS. DELUGE SHOWER .
Work Hygienic Practices:PERSONS W/POTENTIAL EXPOSURE TO SULFUR DIOXIDE
SHOULD NOT WEAR CONTACT LENSES.
Supplemental Safety and Health
MATLS TO AVOID:W/CHLORATES TO FORM CHLORINE WHICH AT ELEVATED TEMP MAY
BECOME EXPLO RXN. SULFUR DIOXIDE DISSOLVES IN WATER TO FORM
SULFUROUS ACID WHICH IS UNSTABLE WHEN EXPSD TO HEAT. FIRE FIGHT
PROC: FULL PROT EQUIP .EFTS OF OVEREXP:IRRITANT ACTION PROVIDE
WARNING OF EXPOS TO TOX CONDS. HIGH CONCS ARE (SEE ING 2)

HCC:G1
Boiling Pt:B.P. Text:14F,-10C
Vapor Pres:49.7 PSIG
Spec Gravity:2.249
Solubility in Water:SOLUBLE
Appearance and Odor:COLORLESS GAS WITH HIGHLY IRRITATING, PUNGENT ODOR.

Stability Indicator/Materials to Avoid:YES
ZINC. REACTS VIOLENTLY W/PEROXIDES, CHROMATES, BICHROMATES,
PERMANGANATES, & OXYGEN DIFLUORIDE. ALSO REACTS (SUPP DATA)
Stability Condition to Avoid:AVOID MOISTURE IN PROCESS SYSTEMS.

Waste Disposal Methods:ALL FED, STATE, & LOCAL REGS REGARDING HLTH &
POLLUTION SHOULD BE FOLLOWED IN WASTE DISP. CNTCT MFR FOR SPECIFIC
RECOMMENDATIONS. DO NOT DISPOSE OF UNUSED QTY. RETURN PROPERLY
LABELED SHIPPING CNTNR T O MFR FOR DISP W/VALVE TIGHTLY CLOSED,(SEE
ING 11)

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particular situation.