===================== Product Identification =====================
MSDS NAME:HYDROGEN SULFIDE
NIIN:00-209-8029
Status Code:A
MSDS Number: CKSWM
=== Responsible Party ===
Company:AIR PRODUCTS AND CHEMICALS INC.
Address:7201 HAMILTON BLVD
City:ALLENTOWN
State:PA
ZIP:18195-1501
Country:US
Info Phone Num:800-345-3148/800-523-9374
Emergency Phone Num:800-523-9374/610-481-7711
Resp. Party Other MSDS Num.:1010
CAGE:00742
=== Contractor Identification ===
Company:AIR PRODUCTS AND CHEMICALS INC
Address:7201 HAMILTON BLVD
Box:City:ALLENTOWN
State:PA
ZIP:18195-1501
Country:US
Phone:800-345-3148/ 800-752-1597
Contract Num:SP0450-00-M-SH50
CAGE:00742
============= Composition/Information on Ingredients =============
Name:HYDROGEN SULFIDE
CAS:7783-06-4
RTECS #:MX1225000
> Wt:99.
OSHA PEL:SEE TABLE Z-2
ACGIH TLV:14 MG/M3;10 PPM
ACGIH STEL:21 MG/M3;15 PPM
EPA Rpt Qty:100 LBS
DOT Rpt Qty:100 LBS
===================== Hazards Identification =====================
Routes of Entry: Inhalation:YES Skin:YES Ingestion:NO
Reports of Carcinogenicity:NTP:NO IARC:NO OSHA:NO
Health Hazards Acute and Chronic:TARGET ORGANS-EYES, SKIN, RESPIRATORY
& CENTRAL NERVOUS SYSTEMS. EYE-INFLAMMATION & IRRITATION OF THE
EYES CAN OCCUR AT VERY LOW CONCENTRATIONS (<10 PPM). EXPOSED
INDIVIDUALS MAY SEE RINGS AROUND BRIG HT LIGHTS. MOST SYMPTOMS
DISAPPEAR WHENEXPOSURE CEASES. ALSO, CONTACT WITH LIQUID (OR
RAPIDLY EXPANDING GAS) MAY CAUSE IRRITATION & FROSTBITE.
INGESTION-NOT A LIKELY ROUTE OF INDUSTRIAL EXPOSURE. INHA
LATION-EXPOSURE TO HYDROGEN SULFIDE >500PPM CAN RESULT IN
RESPIRATORY ARREST, COMA, UNCONSCIOUSNESS & DEATH. CONTINOUS
INHALATION MAY CAUSE OLFACTORY FATIGUE. SEVERE EXPOSURE MAY CAUSE
LONG TERM SYMPT OMS. SKIN-MAY CAUSE IRRITATION.
Explanation of Carcinogenicity:THIS PRODICT IS NOT LISTED AS A
CARCINOGEN OR POTENTIAL CARCINOGEN BY NTP, IARC, OR OSHA.
Effects of Overexposure:EYE:SYMPTOMS MAY INCLUDE TEARING, BURNING, PAIN
WHEN LOOKING AT LIGHT (PHOTOPHOBIA) & BLURRED VISION. INGESTION:
NOT A LIKELY ROUTE OF INDUSTRIAL EXPOSURE. INHALATION: CAN CAUSE
DEADENING OF SENSE OF SMELL, DIZZINESS, HEADACHE, NAUSEA &
RESPIRATORY TRACT IRRITATION. SEVERE EXPOSURE MAY CAUSE LONG-TERM
SYMPTOMS SUCH AS MEMORY LOSS, PARALYSIS OF FACIAL MUSCLES, OR NERVE
TISSUE DAMAGE. SKIN: CONTACT WITH LIQUID (OR RAPIDLY EXPANDING
GAS) MAY CAUSE IRRITATION & FROSTBITE.
Medical Cond Aggravated by Exposure:ACUTE OR CHRONIC RESPIRATORY
CONDITIONS, NEUROLOGICAL OR EYE DISORDERS MAY BE AGGRAVATED BY
OVER-EXPOSURE TO HYDROGEN SULFIDE.
======================= First Aid Measures =======================
First Aid:EYE: FLUSH EYES WITH PLENTY OF LUKEWARM WATER FOR SEVERAL
MINUTES. SEEK MEDICAL ATTENTION IMMEDIATELY. INGESTION: INGESTION
IS AN UNLIKELY ROUTE OF EXPOSURE FOR HYDROGEN SULFIDE. INHALATION:
RMOVE PER SON TO FRESH AIR. IF NOT BREATHING, ADMINISTER ARTIFICIAL
RESPIRATION. IF BREATHING IS DIFFICULT, ADMINISTER OXYGEN. OBTAIN
PROMPT MEDICAL ATTENTION. SKIN: IF LIQUID HYDROGEN SULFIDE COMES IN
CONTACT WITH SKIN, OR IF IRRITATION OF THE SKIN DEVELOPS AFTER
EXPOSURE TO GAS, IMMEDIATELY BEGIN DECONTAMINATION WITH RUNNING
WATER. REMOVE CONTAMINATED CLOTHING & FLUSH WITH PLENTY OF LUKEWARM
WATER FOR SEV ERAL MINS. SEEK IMMEDIATE MEDICAL ATTN.
===================== Fire Fighting Measures =====================
Autoignition Temp:=260.C, 500.F
Lower Limits:4.0%
Upper Limits:44.0%
Extinguishing Media:CARBON DIOXIDE, DRY CHEMICAL, WATER. KEEP ADJACENT
CYLINDERS COOL BY SPRAYING WITH LARGE AMOUNTS OF WATER UNTIL THE
FIRE BURN ITSELF OUT.
Fire Fighting Procedures:EVACUATE ALL PERSONNEL FROM AREA. IF POSSIBLE,
WITHOUT RISK, SHUT OFF SOURCE OF GAS, THEN FIGHT FIRE ACCORDING TO
TYPES OF MATERIALS BURNING. EXTINGUISH FIRE ONLY IF GAS FLOW CAN BE
STOPPED. THIS WILL AVOID POSSIBLE ACCUMULATION & REIGNITION OF A
FLAMMABLE GAS MIXTURE. SCBA REQUIRED.
Unusual Fire/Explosion Hazard:MOST CYLINDERS ARE DESIGNED TO VENT
CONTENTS WHEN EXPOSED TO ELEVATED TEMPERATURES. PRESSURE IN A
CYLINDER CAN BUILD-UP DUE TO HEAT & IT MAY RUPTURE IF PRESSURE
RELIEF DEVICES SHOULD FAIL TO FUNCTION. AN EXTREME EXPLOSION
HAZARD EXISTS IN AREA IN WHICH THE GAS HAS BEEN RELEASED BUT THE
MATERIAL HAS NOT YET IGNITED.
================== Accidental Release Measures ==================
Spill Release Procedures:***SEE OTHER***
====================== Handling and Storage ======================
Handling and Storage Precautions:STORE CYLINDERS IN A WELL-VENTILATED,
SECURE AREA, PROTECTED FROM THE WEATHER. SECURED CYLINDERS SHOULD
BE STORED UP-RIGHT WITH VALVE OUTLET SEALS & VALVE PROTECTION CAPS
IN PLACE. THERE SHOULD BE NO SOURCES OF IGNITION. ALL ELECTRICAL
EQUIPMENT SHOULD BE EXPLOSION-PROOF IN THE STORAGE AREAS.
Other Precautions:BE AWARE OF ANY SIGNS OF DIZZINESS OR FATIGUE;
EXPOSURES TO FATAL CONCENTRATIONS OF HYDROGEN SULFIDE COULD OCCUR
WITHOUT ANY SIGNIFICANT WARNING SYMPTOMS. ALL WORK OPERATIONS
SHOULD BE MONITORED IN SU CH A WAY THAT EMERGENCY PERSONNEL CAN BE
IMMEDIATELY CONTACTED IN THE EVENT OF A RELEASE.
============= Exposure Controls/Personal Protection =============
Respiratory Protection:SELF-CONTAINED BREATHING APPARATUS (SCBA) OR
POSITIVE PRESSURE AIR LINE WITH FULL-FACE MASK & ESCAPE PACK SHOULD
BE USED IN AREAS WHERE THE HYDROGEN SULFIDE CONCENTRATION IS BELOW
0.40%, WHICH IS 10% OF THE LEL OF HYDROGEN SULFIDE & EXCEEDS
PERMISSIBLE EXPOSURE LIMITS. HIGH CONCENTRATION MAY BE WITHIN THE
FLAMMABLE RANGE & MUST NOT BE ENTERED.
Ventilation:PROVIDE EXPLOSION-PROOF VENTILATION SUFFICIENT TO ENSURE
HYDRGEN SULFIDE DOES NOT REACH EXPOSURE LIMITS. LOCAL EXHAUST
VENTILATION IS PREFERRED.
Protective Gloves:BUTYL RUBBER, CHLORINATED POLYETHYLENE, NEOPRENE,
NITRILE, OR POLYVINYL RUBBER.
Eye Protection:SAFETY GLASSES FOR HANDLING CYLINDERS. CHEMICAL GOGGLES
WITH FULL FACESHIELD.
Other Protective Equipment:SAFETY SHOES ARE RECOMMENDED WHEN HANDLING
CYLINDERS. STATIC-RESISTANT CLOTHING IS RECOMMENDED. SAFETY SHOWER
& EYE WASH STATION SHOULD BE READILY AVAILABLE.
Supplemental Safety and Health
NOTE TO PHYSICIAN: ADMINISTER OXYGEN, IF NECESSARY AND TREAT SYMPTOMS.
BE OBSERVANT FOR INITIAL SIGNS OF PULMONARY EDEMA. OTHER: FIRE
RESISTANT GLOVES & CLOTHING IN EMERGENCY SITUATIONS. LEATHER GLOV
ES FOR HANDLING CYLINDERS.
================== Physical/Chemical Properties ==================
HCC:G8
Boiling Pt:=-60.2C, -76.4F
Melt/Freeze Pt:=-85.4C, -122.F
Vapor Pres:248.9 PSIG
Vapor Density:1.17
Spec Gravity:0.79
Solubility in Water:0.0317 LB/GAL @68F(20C)
Appearance and Odor:COLORLESS GAS WITH ODOR OF "ROTTEN EGGS"
================= Stability and Reactivity Data =================
Stability Indicator/Materials to Avoid:YES
OZIDIZING AGENTS, ORGANIC PEROXIDES, ALKALINE MATERIALS, METALS (I.E.
COPPER, LEAD) , AND METAL OXIDES. HYDROGEN SULFIDE REACTS WITH MOST
METALS TO FORM METAL SULFIDES.
Stability Condition to Avoid:CYLINDERS SHOULD NOT BE EXPOSED TO
TEMPERATURES IN EXCESS OF 125F (52C).
Hazardous Decomposition Products:HYDROGEN AND SULFUR.
Conditions to Avoid Polymerization:WILL NOT OCCUR.
=================== Toxicological Information ===================
Toxicological Information:LC50(INHALATION): 587 PPM (RAT, 2 HR);
444-501 PPM (RAT, 4 HR); 335 PPM (RAT, 6 HR). SKIN CORROSIVITY:
HYDROGEN SULFIDE IS IRRITATING TO THE SKIN. ADDITIONAL NOTES: RATS
AND MICE THAT WERE EXPOSED FOR 90 DAYS TO HYDROGEN SULFIDE AT A
CONCENTRATION OF 80 PPM HAD SIGNIFICANTLY DECREASED BODY WEIGHTS
COMPARED TO CONTROLS. RATS EXPOSED TO 80 PPM HAD DEPRESSED BRAIN
WEIGHTS COMPARED TO CONTROLS. THE ON LY HISTOLOGICAL FINDINGS WAS
INFLAMMATION OF THE NASAL MUCOSA. HYDROGEN SULFIDE WAS NOT
MUTAGENIC IN A BACTERIAL (S. TYPHIMURIUM) ASSAY.
===================== Ecological Information =====================
Ecological:MOBILITY:HYDROGEN SULFIDE WILL NOT BE MOBILE IN SOIL.
PERSISTANCE & BIODERADABILITY: PERSISTANCE-CONVERTS TO ELEMENTAL
SULFUR UPON STANDING IN WATER, BIODEGRADATION-MICROORGANISMS IN
SOIL & WATER ARE INVOLVED IN OXIDATION-REDUCTION REACTIONS THAT
OXIDIZE HYDROGEN SULFIDE TO ELEMENTAL SULFUR. MEMBERS OF THE GENERA
BEGGIATOA, THIOPLOCA & THIOTRIX FUNCTION IN TRANSITION ZONES
BETWEEN AEROBIC AND ANAE ROBIC CONDITIONS WHERE BOTH MOLECULAR
OXYGEN & HYDROGEN SULFIDE ARE FOUND. ALSO, SOME PHOTOSYNTHETIC
BACTERIA OXIDIZE HYDROGEN SULFIDE TO ELEMENTAL SULFUR.
==================== Disposal Considerations ====================
Waste Disposal Methods:SHALL BE DONE I/A/W FEDERAL, STATE & LOCAL
REGULATIONS. WASTES CONTAINING THIS MATERIAL MAY BE CLASSIFIED BY
EPA AS A HAZARDOUS WASTE BY CHARACTERISTIC (SUCH AS IGNITABILITY,
CORROSIVITY, TOXICITY, RE ACTIVITY). WASTE STREAMS MUST BE
CHARACTERIZED BY THE USER TO MEET FEDERAL, STATE & LOCAL REQUIREMEN
TS. RETURN CONTAINER & UNUSED PRODUCT TO SUPPLIER.
=================== MSDS Transport Information ===================
Transport Information:DOT SHIPPING NAME: HYDROGEN SULFIDE, POISON -
INHALATION HAZARD, ZONE B. HAZARD CLASS: 2.3. IDENTIFICATION
NUMBER: UN1053. SHIPPING LABEL(S): POISON GAS, FLAMMABLE GAS.
PLACARD (ALL QUANTITIES): POISO N GAS. ADDITIONAL MARKING: HYDROGEN
SULFIDE IS ALSO A HAZARDOUS SUBSTANCE REGULATED BY THE EPA. WHEN
SHIIPING QUANTITIES OF 100 LBS. OR MORE IN ONE CYLINDER, ADD THE
PREFIX "RQ" TO THE DOT SHIPPING NA ME ON THE DOCUMENTATION AND
CLEARLY MARK "RQ" ON THE CYLINDER NEAR THE LABEL.
===================== Regulatory Information =====================
SARA Title III Information:SARA TITLE III: SECTIONS 302/304-EXTREMELY
HAZARDOUS SUBSTANCES: HYDROGEN SULFIDE IS LISTED. THRESHOLD
PLANNING QUANTITY (TPQ): 500 LBS (227 KGS). REPORTABLE QUANTITY
(RQ): 100 LBS (45.4 KGS). SECTION S 311/312-HAZARDOUS CHEMICAL
REPORTING: IMMEDIATE-YES. PRESSURE-YES. DELAYED HEALTH-NO.
REACTIVITY-YES. SECTION 313-THIS PRODUCT DOES NOT REQUIRE REPORTING
UNDER SECTION 313.
Federal Regulatory Information:CERCLA: REPORTABLE QUANTITY (RQ): 100
LBS. (45.4 KGS). CLEAN AIR ACT: SECTION 112(R): RISK MANAGEMENT
PROGRAMS FOR CHEMICAL ACCIDENTAL RELEASE-HYDROGEN SULFIDE IS LISTED
AS A REGULATED SUBSTNCES. THRE SHOLD QUANTITY (TQ): 10,000 LBS
(4,535 KG). TSCA: HYDROGEN SULFIDE IS LISTED ON THE TSCA INVENTORY.
OSHA-PROCESS SAFETY MANAGEMENT OF HIGHLY HAZARDOUS CHEMICALS.
HYDROGEN SULFIDE IS LISTED AS A HIGHLY HAZARDOUS SUBSTANCE.
THRESHOLD QUANTITY (TQ): 1500 LBS (681 KGS).
State Regulatory Information:CALIFORNIA: ACCIDENTAL RELEASE PREVENTION
PROGRAM-THRESHOLD QUANTITY (TQ): 500 LBS (227 KGS). PROPOSITION
65-HYDROGEN SULFIDE IS NOT A LISTED SUBSTANCE WHICH THE STATE OF
CALIFORNIA REQUIRES WARNING U NDER THIS STATUE. NEW JERSEY: TOXIC
CATASTROPHE PREVENTION ACT-REGISTRATION QUANTITY (RQ): 500 LBS (227
KGS).
======================= Other Information =======================
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.
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