2,4,4-Trimethyl-2-pentanethiol
tert-Octanethiol
2-Methyl-2-heptanethiol
C8H18S / (CH3)2CSHCH2C(CH3)3
Molecular mass: 146.3
ICSC # 1494
CAS # 141-59-3
RTECS # SA3260000
UN # 3023
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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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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, carbon dioxide
,
foam
.
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Explosion
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Above 46°C explosive vapour/air mixtures may be formed.
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Above 46°C use a closed system, ventilation, and explosion-proof electrical equipment.
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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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Headache.
Nausea.
Vomiting.
Dizziness.
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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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 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.
Wash hands before eating.
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Rinse mouth.
Induce vomiting (ONLY IN CONSCIOUS PERSONS!).
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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Collect leaking and spilled liquid in sealable containers as far as possible.
Absorb remaining liquid in sand or inert absorbent and remove to safe place.
(Extra personal protection: chemical protection suit including self-contained breathing apparatus.)
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Fireproof.
Separated from
strong bases,
strong acids
and
oxidants
.
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UN Hazard Class: 6.1
UN Subsidiary Risks: 3
UN Packing Group: I
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Important Data
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Physical State; Appearance:
COLOURLESS LIQUID
, WITH CHARACTERISTIC ODOUR.
Physical Dangers:
Chemical Dangers:
The substance decomposes
on burning
producing
toxic gases
including
hydrogen sulfide
and
sulfur oxides
.
Reacts
violently with
oxidants
causing fire hazard.
Reacts
with
strong acids
,
strong bases
and
strong reducing agents
.
Attacks many metals and rubber.
Occupational Exposure Limits:
TLV not established.
MAK not established.
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Routes of Exposure:
The substance can be absorbed into the body
by inhalation,
through the skin
and
by ingestion.
Inhalation Risk:
No indication can be given about the rate in which a harmful concentration in the air is reached on evaporation of this substance at 20°C.
Effects of Short-Term Exposure:
The substance
is mildly irritating to
the eyes
.
The substance may cause effects on the
central nervous system
, resulting in
convulsions
,
lowering of consciousness
and respiratory depression.
Exposure may result in death.
Effects of Long-Term or Repeated Exposure:
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Physical
Properties
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Boiling point: 155°C
Melting point: -74°C
Relative density (water = 1): 0.85
Solubility in water: none
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Relative vapour density (air = 1): 5.0
Flash point:
46°C o.c.
Explosive limits, vol% in air: 0.8-?
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Environmental
Data
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N O T E S
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Environmental effects from the substance have not been investigated.
NFPA Code: H2; F2; R0;
Transport Emergency Card: TEC (R)-61GTF1-I
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ADDITIONAL INFORMATION
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ICSC: 1494
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tert-OCTYL MERCAPTAN
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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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