Thiobismethane
Methylsulphide
C2H6S / (CH3)2S
Molecular mass: 62.1
ICSC # 0878
CAS # 75-18-3
RTECS # PV5075000
UN # 1164
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Types of Hazard/ Exposure
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Acute Hazards/ Symptoms
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Prevention
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First Aid/
Fire Fighting
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FIRE
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Highly flammable.
Gives off irritating or toxic fumes (or gases) in a fire.
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NO open flames, NO sparks, and NO smoking.
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Powder
,
foam
,
carbon dioxide
.
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Explosion
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Vapour/air mixtures are explosive.
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Closed system, ventilation, explosion-proof electrical equipment and lighting.
Do NOT use compressed air for filling, discharging, or handling.
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In case of fire: keep drums, etc., cool by spraying with water.
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Exposure
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•Inhalation
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Cough.
Nausea.
Sore throat.
Weakness.
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Local exhaust or breathing protection.
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Fresh air, rest.
Refer for medical attention.
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•Skin
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Redness.
Pain.
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Protective gloves.
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Remove contaminated clothes.
Rinse and then wash skin with water and soap.
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•Eyes
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Redness.
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Safety spectacles.
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First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
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•Ingestion
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Weakness.
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Do not eat, drink, or smoke during work.
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Rinse mouth.
Induce vomiting (ONLY IN CONSCIOUS PERSONS!).
Give one or two glasses of water to drink.
Refer for medical attention.
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Spillage Disposal
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Storage
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Packaging & Labelling
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Evacuate danger area!
Consult an expert!
Collect leaking liquid in sealable containers.
Do NOT wash away into sewer.
(Extra personal protection: filter respirator for organic gases and vapours).
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Fireproof.
Separated from
strong oxidants.
Cool.
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UN Hazard Class: 3
UN Packing Group: II
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Important Data
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Physical State; Appearance:
COLOURLESS LIQUID
, WITH CHARACTERISTIC ODOUR.
Physical Dangers:
The vapour is heavier than air
and may travel along the ground; distant ignition possible.
Chemical Dangers:
The substance decomposes
on burning
producing
toxic and corrosive fumes
(
sulfur oxides
).
Reacts
violently with
oxidants
causing fire and explosion hazard.
Occupational Exposure Limits:
TLV: 10 ppm as TWA (ACGIH 2008).
IIb (not established but data is available) (DFG 2008).
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Routes of Exposure:
The substance can be absorbed into the body
by inhalation of its vapour
and
by ingestion.
Inhalation Risk:
A harmful contamination of the air can be reached rather quickly on evaporation of this substance at 20°C.
Effects of Short-Term Exposure:
The substance
is irritating to
the eyes
and
the skin
.
Effects of Long-Term or Repeated Exposure:
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Physical
Properties
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Boiling point: 37.3°C
Melting point: -98°C
Relative density (water = 1): 0.85
Solubility in water:
none
Vapour pressure, kPa at 20°C: 53.2
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Relative vapour density (air = 1): 2.1
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.6
Flash point: -49°C
Auto-ignition temperature: 205°C
Explosive limits, vol% in air: 2.2 - 19.7
Octanol/water partition coefficient as log Pow: 0.84
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Environmental
Data
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N O T E S
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Transport Emergency Card: TEC (R)-30G30
NFPA Code: H2; F4; R0;
Card has been partially updated in November 2008: see Occupational Exposure Limits,
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ADDITIONAL INFORMATION
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ICSC: 0878
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DIMETHYLSULPHIDE
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(C) IPCS, CEC, 1994
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IMPORTANT LEGAL NOTICE:
Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH,
the CEC or the IPCS is responsible for the use which might be made of this
information. This card contains the collective views of the IPCS Peer Review Committee and may
not reflect in all cases all the detailed requirements included in national legislation
on the subject. The user should verify compliance of the cards with the relevant legislation
in the country of use.
The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
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