Ethyl mercaptan
Thioethyl alcohol
C2H5SH
Molecular mass: 62.1
ICSC # 0470
CAS # 75-08-1
RTECS # KI9625000
UN # 2363
EC # 016-022-00-9
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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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Extremely 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.
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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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STRICT HYGIENE!
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•Inhalation
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Dizziness.
Headache.
Nausea.
Vomiting.
Tremor.
Weakness.
Unconsciousness.
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Ventilation, local exhaust, or breathing protection.
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Fresh air, rest.
Artificial respiration may be needed.
Refer for medical attention.
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•Skin
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Redness.
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Protective gloves.
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Rinse skin with plenty of water or shower.
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•Eyes
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Redness.
Pain.
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Safety goggles,
or eye protection in combination with breathing protection.
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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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(See Inhalation).
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Do not eat, drink, or smoke during work.
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Rinse mouth.
Give one or two glasses of water to drink.
Do NOT induce vomiting.
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!
Collect leaking liquid in sealable containers.
Do NOT wash away into sewer.
Personal protection: self-contained breathing apparatus.
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Fireproof.
Separated from
strong oxidants,
strong acids.
Cool.
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F symbol
Xn symbol
N symbol
R: 11-20-50/53
S: 2-16-25-60-61
UN Hazard Class: 3
UN Packing Group: I
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Important Data
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Physical State; Appearance:
COLOURLESS LIQUID
, WITH PUNGENT ODOUR.
Physical Dangers:
The vapour is heavier than air
and may travel along the ground; distant ignition possible.
Chemical Dangers:
The substance decomposes
on heating
producing
toxic fumes
including
hydrogen sulfide
(See ICSC 0165)
and
sulfur oxides
.
The substance is a weak acid.
Reacts with oxidants
causing fire and explosion hazard.
Reacts
with
strong acids
producing
toxic gases
,
hydrogen sulfide
and
sulfur oxides
.
Occupational Exposure Limits:
TLV: 0.5 ppm as TWA; (ACGIH 2004).
MAK: 0.5 ppm, 1.3 mg/m3
Peak limitation category: II(2); Pregnancy risk group: D;
(DFG 2006).
OSHA PEL: C 10 ppm (25 mg/m3)
NIOSH REL: C 0.5 ppm (1.3 mg/m3) 15-minute
NIOSH IDLH: 500 ppm See: 75081
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Routes of Exposure:
The substance can be absorbed into the body
by inhalation
and
by ingestion.
Inhalation Risk:
A harmful contamination of the air can be reached very quickly on evaporation of this substance at 20°C.
Effects of Short-Term Exposure:
The substance
is irritating to
the eyes
,
the skin
and
the respiratory tract
.
The substance may cause effects on the central nervous system
,
resulting in
lowering of consciousness
and
respiratory depression
.
Effects of Long-Term or Repeated Exposure:
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Physical
Properties
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Boiling point: 35°C
Melting point: -144.4°C
Relative density (water = 1): 0.839
Solubility in water, g/100 ml at 20°C: 0.68
Vapour pressure, kPa at 20°C: 58.9
Relative vapour density (air = 1): 2.14
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Relative density of the vapour/air-mixture at 20°C (air = 1): 1.5
Flash point: -48.3°C
Auto-ignition temperature: 299°C
Explosive limits, vol% in air: 2.8-18.2
Octanol/water partition coefficient as log Pow: 1.5
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Environmental
Data
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N O T E S
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Transport Emergency Card: TEC (R)-30S2363
NFPA Code: H2; F4; R0;
Card has been partially updated in July 2007: see Occupational Exposure Limits, Ingestion First Aid.
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ADDITIONAL INFORMATION
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ICSC: 0470
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ETHANETHIOL
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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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