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2-BUTANOL ICSC: 0112
Date of Peer Review: April 2005

sec-Butyl alcohol
Butan-2-ol
1-Methyl propanol
Methyl ethyl carbinol
Butylene hydrate
CAS # 78-92-2 C4H10O / CH3CHOHCH2CH3
RTECS # EO1750000 Molecular mass: 74.1
UN # 1120
EC # 603-127-00-5
TYPES OF HAZARD / EXPOSURE ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE FIGHTING
FIRE Flammable.
NO open flames, NO sparks, and NO smoking.
Powder, water spray, foam, carbon dioxide.
EXPLOSION Above 24C explosive vapour/air mixtures may be formed.
Above 24C use a closed system, ventilation, and explosion-proof electrical equipment.
In case of fire: keep drums, etc., cool by spraying with water.
EXPOSURE


Inhalation Headache. Dizziness. Drowsiness.
Ventilation, local exhaust, or breathing protection.
Fresh air, rest. Refer for medical attention.
Skin Dry skin.
Protective gloves.
Remove contaminated clothes. Rinse skin with plenty of water or shower.
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 Dizziness. Drowsiness.
Do not eat, drink, or smoke during work.
Rinse mouth. Give plenty of water to drink. Do NOT induce vomiting. Refer for medical attention.
SPILLAGE DISPOSAL PACKAGING & LABELLING
Personal protection: filter respirator for organic gases and vapours. 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.
EU Classification
Symbol: Xi
R: 10-36/37-67
S: (2-)-7/9-13-24/25-26-46
Note: [C]
UN Classification
UN Hazard Class: 3
UN Pack Group: III
EMERGENCY RESPONSE STORAGE
Transport Emergency Card: TEC (R)-30S1120-III
NFPA Code: H1; F3; R0;
Fireproof. Separated from strong oxidants, aluminium.
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
2-BUTANOL ICSC: 0112
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
COLOURLESS LIQUID, WITH CHARACTERISTIC ODOUR.

CHEMICAL DANGERS:
The substance can form explosive peroxides. Reacts with aluminium when heated to 100C, strong oxidants, such as chromium trioxide forming flammable/explosive gas (hydrogen - see ICSC0001). Attacks some forms of plastic, rubber and coatings.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 100 ppm as TWA; (ACGIH 2005).
MAK: IIb (not established but data is available) (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 will be reached rather slowly on evaporation of this substance at 20C.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance is irritating to the eyes. Exposure far above the OEL could cause lowering of consciousness. If this liquid is swallowed, aspiration into the lungs may result in chemical pneumonitis.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
The liquid defats the skin.
PHYSICAL PROPERTIES
Boiling point: 100C
Melting point: -115C
Relative density (water = 1): 0.81
Solubility in water, g/100 ml at 20C: 12.5
Vapour pressure, kPa at 20C: 1.7
Relative vapour density (air = 1): 2.55
Relative density of the vapour/air-mixture at 20C (air = 1): 1.03
Flash point: 24C c.c.
Auto-ignition temperature: 406C
Explosive limits, vol% in air: 1.7-9.0
Octanol/water partition coefficient as log Pow: 0.6
ENVIRONMENTAL DATA

NOTES
Check for peroxides prior to distillation; eliminate if found.
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)
        Butanols-four isomers (EHC 65, 1987)
        Isobutyl alcohol (CHEMINFO)
        n-Butyl alcohol (CHEMINFO)
        tert-Butanol (CHEMINFO)
        tert-Butanol (ICSC)