ICSC 1445 - tert-BUTYL ACETATE

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tert-BUTYL ACETATE

ICSC: 1445
_{October 2002}

Acetic acid, tert-butyl ester
Acetic acid, 1,1-dimethylethyl ester

CAS No: 540-88-5
RTECS No: AF7400000
UN No: 1123
EC No: 607-026-00-7

C₆H₁₂O₂
Molecular mass: 116.2

TYPES OF HAZARD / EXPOSURE	ACUTE HAZARDS / SYMPTOMS	PREVENTION	FIRE FIGHTING
FIRE	Highly flammable.	NO open flames, NO sparks and NO smoking.	Carbon dioxide, dry powder, foam.
EXPLOSION	Above 15.5°C explosive vapour/air mixtures may be formed.	Above 15.5°C use a closed system, ventilation and explosion-proof electrical equipment.	In case of fire: keep drums, etc., cool by spraying with water.

EXPOSURE
Inhalation	Cough. Sore throat.	Ventilation, local exhaust or breathing protection.	Fresh air, rest.
Skin	Dry skin.	Protective gloves.	Remove contaminated clothes. Rinse and then wash skin with water and soap.
Eyes	Redness. Pain.	Safety spectacles, or eye protection in combination with breathing protection.	First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion		Do not eat, drink, or smoke during work.	Rinse mouth.

SPILLAGE DISPOSAL	PACKAGING & LABELLING
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.	F Symbol R: 11-66 S: (2-)16-23-25-29-33 Note: C UN Hazard Class: 3 UN Pack Group: II

EMERGENCY RESPONSE	STORAGE
Transport Emergency Card: TEC (R)-30S1123-II	Fireproof. Separated from strong oxidants, strong bases, strong acids.

IMPORTANT DATA

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).

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.

PHYSICAL PROPERTIES	ENVIRONMENTAL DATA
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 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

NOTES

IPCS
International
Programme on
Chemical Safety

Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2002

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Updated by AS. Approved by EC. Last update: 21.03.2003