Methyl chloroform
Methyltrichloromethane
alpha-Trichloroethane
C2H3Cl3 / CCl3CH3
Molecular mass: 133.4
ICSC # 0079
CAS # 71-55-6
RTECS # KJ2975000
UN # 2831
EC # 602-013-00-2
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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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Combustible under specific conditions.
Heating will cause rise in pressure with risk of bursting.
Gives off irritating or toxic fumes (or gases) in a fire.
See Notes.
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In case of fire in the surroundings: use appropriate extinguishing media.
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Explosion
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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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PREVENT GENERATION OF MISTS!
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•Inhalation
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Cough.
Sore throat.
Headache.
Dizziness.
Drowsiness.
Nausea.
Ataxia.
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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Dry skin.
Redness.
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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.
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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Nausea.
Vomiting.
Abdominal pain.
Diarrhoea.
(Further see Inhalation).
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Do not eat, drink, or smoke during work.
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Do NOT induce vomiting.
Rinse mouth.
Give a slurry of activated charcoal in 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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Personal protection: self-contained breathing apparatus.
Ventilation.
Collect leaking and spilled liquid in sealable, suitable containers as far as possible.
Absorb remaining liquid in sand or inert absorbent and remove to safe place.
Do NOT let this chemical enter the environment.
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Separated from
food and feedstuffs
and
strong oxidants,
aluminium
,
manganese
and
zinc
.
Cool.
Dry.
Store in an area without drain or sewer access.
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Do not transport with food and feedstuffs.
Note: F
Xn symbol
N symbol
R: 20-59
S: 2-24/25-59-61
UN Hazard Class: 6.1
UN Packing Group: III
Signal: Warning
Excl mark-Health haz
Causes mild skin irritation
Causes eye irritation
May cause drowsiness or dizziness
May cause damage to cardiovascular system if inhaled
Harmful to aquatic life
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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.
Chemical Dangers:
The substance decomposes
on burning,
producing
toxic and corrosive fumes
.
Reacts
violently with
aluminium
and its alloys with magnesium,
bases
,
strong oxidants
,
acetone, and
zinc
Occupational Exposure Limits:
TLV: 350 ppm as TWA, 450 ppm as STEL; A4 (not classifiable as a human carcinogen); BEI issued (ACGIH 2006).
MAK: 200 ppm, 1100 mg/m3
Peak limitation category: II(1);
skin absorption (H);
Pregnancy risk group: C;
(DFG 2006).
OSHA PEL: TWA 350 ppm (1900 mg/m3)
NIOSH REL: C 350 ppm (1900 mg/m3) 15-minute See Appendix C (Chloroethanes)
NIOSH IDLH: 700 ppm See: 71556
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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 mildly irritating to
the eyes
,
the respiratory tract
and
the skin
.
The substance may cause effects on the
central nervous system
, resulting in
lowering of consciousness
.
Exposure at high levels may result in cardiac dysrhythmia.
Effects of Long-Term or Repeated Exposure:
The liquid defats the skin.
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Physical
Properties
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Boiling point: 74°C
Melting point: -30°C
Relative density (water = 1): 1.34
Solubility in water: (poor)
Vapour pressure, kPa at 20°C: 13.3
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Relative vapour density (air = 1): 4.6
Flash point: see Notes
Auto-ignition temperature: 537°C
Explosive limits, vol% in air: 8-16
Octanol/water partition coefficient as log Pow: 2.49
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Environmental
Data
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The substance is harmful to aquatic organisms.
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N O T E S
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Combustible vapour/air mixtures difficult to ignite, may be developed under certain conditions.
The substance burns only in excess oxygen or if a strong source of ignition is present.
Do NOT use in the vicinity of a fire or a hot surface, or during welding.
Use of alcoholic beverages enhances the harmful effect.
Depending on the degree of exposure, periodic medical examination is suggested.
An added stabilizer or inhibitor can influence the toxicological properties of this substance, consult an expert.
Transport Emergency Card: TEC (R)-61S2831 or 61GTI-III
NFPA Code: H2; F1; R0
Card has been partially updated in February 2009: see Chemical Dangers.
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ADDITIONAL INFORMATION
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ICSC: 0079
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1,1,1-TRICHLOROETHANE
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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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