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tert-BUTANOL ICSC: 0114
Date of Peer Review: March 1995

tert-Butyl alcohol
2-Methyl-2-propanol
Trimethyl carbinol
CAS # 75-65-0 C4H10O / (CH3)3COH
RTECS # EO1925000 Molecular mass: 74.1
UN # 1120
EC # 603-005-00-1
TYPES OF HAZARD / EXPOSURE ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE FIGHTING
FIRE Highly flammable.
NO open flames, NO sparks, and NO smoking.
Foam, alcohol-resistant foam, powder, carbon dioxide.
EXPLOSION Vapour/air mixtures are explosive.
Closed system, ventilation, explosion-proof electrical equipment and lighting. Do NOT use compressed air for filling, discharging, or handling.
In case of fire: keep drums, etc., cool by spraying with water.
EXPOSURE
PREVENT GENERATION OF MISTS!

Inhalation Dizziness. Headache.
Ventilation (not if powder), local exhaust, or breathing protection.
Fresh air, rest. Refer for medical attention.
Skin Dry skin. Redness.
Protective gloves.
Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention.
Eyes Redness. Pain.
Safety goggles.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion (Further see Inhalation).
Do not eat, drink, or smoke during work.
Rinse mouth. Give plenty of water to drink. Refer for medical attention.
SPILLAGE DISPOSAL PACKAGING & LABELLING
Ventilation. Collect leaking liquid in sealable containers. Absorb remaining liquid in sand or inert absorbent and remove to safe place. Wash away remainder with plenty of water. Personal protection: self-contained breathing apparatus.
EU Classification
Symbol: F, Xn
R: 11-20
S: (2-)-9-16
UN Classification
UN Hazard Class: 3
UN Pack Group: II
EMERGENCY RESPONSE STORAGE
Transport Emergency Card: TEC (R)-30S1120-II
NFPA Code: H1; F3; R0
Fireproof. Separated from strong acids.
IPCS
International
Programme on
Chemical Safety
Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities IPCS, CEC 1999

SEE IMPORTANT INFORMATION ON BACK
tert-BUTANOL ICSC: 0114
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
COLOURLESS LIQUID OR CRYSTALLINE POWDER, WITH CHARACTERISTIC ODOUR.

PHYSICAL DANGERS:
The vapour mixes well with air, explosive mixtures are easily formed.

CHEMICAL DANGERS:
The substance decomposes on contact with strong mineral acids producing flammable isobutylene gas.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 100 ppm as TWA; A4 (not classifiable as a human carcinogen); (ACGIH 2004).
MAK: 20 ppm, 62 mg/m; Peak limitation category: II(4); Pregnancy risk group: D; (DFG 2004).
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 20C.

EFFECTS OF SHORT-TERM EXPOSURE:
The vapour of this substance is irritating to the eyes. The substance may cause effects on the central nervous system. Exposure at high levels could cause lowering of consciousness.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
Repeated or prolonged contact with skin may cause dermatitis.
PHYSICAL PROPERTIES
Boiling point: 83C
Melting point: 25C
Relative density (water = 1): 0.8
Solubility in water: very good
Vapour pressure, kPa at 20C: 4.1
Relative vapour density (air = 1): 2.6
Relative density of the vapour/air-mixture at 20C (air = 1): 1.06
Flash point: 11C c.c.
Auto-ignition temperature: 470C
Explosive limits, vol% in air: 2.4-8.0
Octanol/water partition coefficient as log Pow: 0.4
ENVIRONMENTAL DATA

NOTES
The odour warning when the exposure limit value is exceeded is insufficient.
Card has been partly updated in April 2005. See sections Occupational Exposure Limits, EU classification, Emergency Response.
ADDITIONAL INFORMATION


LEGAL NOTICE Neither the CEC nor the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information
IPCS, CEC 1999
See Also:
        1-Butanol (ICSC)
        2-butanol (CHEMINFO)
        2-Butanol (ICSC)
        Butanols-four isomers (EHC 65, 1987)
        Isobutyl alcohol (CHEMINFO)
        n-Butyl alcohol (CHEMINFO)
        tert-Butanol (CHEMINFO)