Acetic acid, tert-butyl ester
Acetic acid, 1,1-dimethylethyl ester
C6H12O2
Molecular mass: 116.2
ICSC # 1445
CAS # 540-88-5
RTECS # AF7400000
UN # 1123
EC # 607-026-00-7
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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.
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NO open flames, NO sparks and NO smoking.
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Carbon dioxide,
dry powder,
foam.
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Explosion
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Above 15.5°C explosive vapour/air mixtures may be formed.
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Above 15.5°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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•Inhalation
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Cough.
Sore throat.
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Ventilation, local exhaust or breathing protection.
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Fresh air, rest.
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•Skin
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Dry 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.
Pain.
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Safety spectacles,
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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Do not eat, drink, or smoke during work.
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Rinse mouth.
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Spillage Disposal
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Storage
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Packaging & Labelling
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Do NOT wash away into sewer.
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.
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Fireproof.
Separated from
strong oxidants,
strong bases,
strong acids.
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Note: C
F symbol
R: 11-66
S: 2-16-23-25-29-33
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:
Reacts
with
strong acids
,
strong bases
,
strong oxidants
including
nitrates
causing fire and explosion hazard.
Attacks plastic.
Occupational Exposure Limits:
TLV: 200 ppm as TWA; (ACGIH 2002).
MAK: 20 ppm; 96 mg/m3
Peak limitation category: II(4); Pregnancy risk group: D;
(DFG 2002).
OSHA PEL: TWA 200 ppm (950 mg/m3)
NIOSH REL: TWA 200 ppm (950 mg/m3)
NIOSH IDLH: 1500 ppm 10%LEL See: 540885
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Routes of Exposure:
The substance can be absorbed into the body
by inhalation of its vapour.
Inhalation Risk:
A harmful contamination of the air will be reached rather slowly on evaporation of this substance at 20°C.
Effects of Short-Term Exposure:
The vapour
is irritating to
the respiratory tract
.
The substance
is mildly irritating to
the eyes
and
the skin
.
Exposure far above the OEL could cause lowering of consciousness.
Effects of Long-Term or Repeated Exposure:
The liquid defats the skin.
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Physical
Properties
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Boiling point: 97.8°C
Relative density (water = 1): 0.86
Solubility in water: poor
Vapour pressure, kPa at 25°C: 6.3
Relative vapour density (air = 1) : 4
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Relative density of the vapour/air-mixture at 20°C (air = 1): 1.19
Flash point: 15.5°C c.c.
Explosive limits, vol% in air: 1.5-7.3
Octanol/water partition coefficient as log Pow: 1.76
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Environmental
Data
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N O T E S
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Transport Emergency Card: TEC (R)-30S1123-II
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ADDITIONAL INFORMATION
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ICSC: 1445
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tert-BUTYL ACETATE
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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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