Acetoacetic acid methyl ester
Butanoic acid, 3-oxo-, methyl ester
1-Methoxybutane-1,3-dione
C5H8O3
Molecular mass: 116.1
ICSC # 1086
CAS # 105-45-3
RTECS # AK5775000
EC # 607-137-00-0
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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.
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NO open flames.
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Alcohol-resistant foam,
powder, carbon dioxide.
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Explosion
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Above 77°C explosive vapour/air mixtures may be formed.
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Above 77°C use a closed system, ventilation.
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Exposure
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•Inhalation
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Cough.
Dizziness.
Drowsiness.
Headache.
Sore throat.
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Ventilation, 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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Protective gloves.
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Remove contaminated clothes.
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.
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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.
Do NOT induce vomiting.
Give plenty 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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Ventilation.
Collect leaking and spilled liquid in sealable containers as far as possible.
Wash away remainder with plenty of water.
(Extra personal protection: filter respirator for organic gases and vapours.)
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Separated from oxidants.
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Xi symbol
R: 36
S: 2-26
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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
irritating fumes
.
Reacts
with
oxidants
.
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 of its vapour.
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 irritating to
the eyes
and
the respiratory tract
.
Exposure may result in lowering of consciousness.
Effects of Long-Term or Repeated Exposure:
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Physical
Properties
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Boiling point: 171.7°C
Melting point: -27°C
Relative density (water = 1): 1.08
Solubility in water, g/100 ml: 50
Vapour pressure, kPa at 20°C: 0.17
Relative vapour density (air = 1): 4.0
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Relative density of the vapour/air-mixture at 20°C (air = 1): 1.01
Flash point:
77°C c.c.
Auto-ignition temperature: 280°C
Explosive limits, vol% in air: 1.4-14.5
Octanol/water partition coefficient as log Pow: -0.26
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Environmental
Data
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N O T E S
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ADDITIONAL INFORMATION
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ICSC: 1086
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METHYLACETOACETATE
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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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