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tert-BUTYL ACETATEICSC: 1445
Acetic acid, tert-butyl ester
Acetic acid, 1,1-dimethylethyl ester
September 2002
CAS #: 540-88-5
UN #: 1123
EC Number: 208-760-7

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

   
  SYMPTOMS PREVENTION FIRST AID
Inhalation Cough. Sore throat.  Use 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.  Wear 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 refer for medical attention. 
Ingestion   Do not eat, drink, or smoke during work.  Rinse mouth. 

SPILLAGE DISPOSAL CLASSIFICATION & 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. Then store and dispose of according to local regulations. 

According to UN GHS Criteria

 

Transportation
UN Classification
UN Hazard Class: 3; UN Pack Group: II 

STORAGE
Fireproof. Separated from strong oxidants, strong bases and strong acids. 
PACKAGING
 
tert-BUTYL ACETATE ICSC: 1445
PHYSICAL & CHEMICAL INFORMATION

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 and strong oxidants including nitrates. This generates fire and explosion hazard. Attacks plastics. 

Formula: C6H12O2
Molecular mass: 116.2
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  


EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation of its vapour. 

Effects of short-term exposure
The vapour is irritating to the respiratory tract. The substance is mildly irritating to the eyes and skin. Exposure far above the OEL could cause lowering of consciousness. 

Inhalation risk
A harmful contamination of the air will be reached rather slowly on evaporation of this substance at 20°C. 

Effects of long-term or repeated exposure
The substance defats the skin, which may cause dryness or cracking. 


OCCUPATIONAL EXPOSURE LIMITS
TLV: 50 ppm as TWA; 150 ppm as STEL.
MAK: 240 mg/m3, 50 ppm; peak limitation category: II(2); pregnancy risk group: C 

ENVIRONMENT
 

NOTES
 

ADDITIONAL INFORMATION
  EC Classification
Symbol: F; R: 11-66; S: (2)-16-23-25-29-33; Note: C 

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       Toxicological Abbreviations