INTOX Home Page
BUTYRALDEHYDE ICSC: 0403
Date of Peer Review: March 1996

Butanal
Butyl aldehyde
CAS # 123-72-8 C4H8O / CH3-CH2-CH2-CHO
RTECS # ES2275000 Molecular mass: 72.1
UN # 1129
EC Index # 605-006-00-2
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. Heating may cause pressure rise with risk of bursting and explosion.
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


Inhalation Burning sensation. Cough. Sore throat.
Ventilation, local exhaust, or breathing protection.
Fresh air, rest. Refer for medical attention.
Skin Redness. Burning sensation.
Protective gloves.
Remove contaminated clothes. Rinse skin with plenty of water or shower.
Eyes Redness. Pain.
Safety spectacles.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion Burning sensation.
Do not eat, drink, or smoke during work.
Rinse mouth. Rest. Refer for medical attention.
SPILLAGE DISPOSAL PACKAGING & LABELLING
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. Personal protection: chemical protection suit including self-contained breathing apparatus.
EU Classification
Symbol: F
R: 11
S: (2-)-9-29-33
UN Classification
UN Hazard Class: 3
UN Pack Group: II
EMERGENCY RESPONSE STORAGE
Transport Emergency Card: TEC (R)-30S1129 or 30GF1-I+II
NFPA Code: H3; F3; R2;
Fireproof. Separated from incompatible materials. See Chemical Dangers. Cool. Keep in the dark.
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 2005

SEE IMPORTANT INFORMATION ON BACK
BUTYRALDEHYDE ICSC: 0403
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
COLOURLESS LIQUID, WITH PUNGENT ODOUR.

PHYSICAL DANGERS:
The vapour is heavier than air, and may travel along the ground; distant ignition possible.

CHEMICAL DANGERS:
The substance can presumably form explosive peroxides. The substance may polymerize due to heating, under the influence of acid(s) or alkalis. Reacts with amines, oxidants, strong bases and acids.

OCCUPATIONAL EXPOSURE LIMITS:
TLV not established.
ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation of its vapour and by ingestion.

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 20C.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance is irritating to the eyes, the skin and the respiratory tract.

PHYSICAL PROPERTIES
Boiling point: 75C
Melting point: -99C
Relative density (water = 1): 0.8
Solubility in water, g/100 ml: 7
Vapour pressure, kPa at 20C: 12.2
Relative vapour density (air = 1): 2.5
Flash point: -7C
Auto-ignition temperature: 230C
Explosive limits, vol% in air: 2.5-12.5
Octanol/water partition coefficient as log Pow: 1.18
ENVIRONMENTAL DATA
The substance is harmful to aquatic organisms.
NOTES
Check for peroxides prior to distillation; eliminate if found. Card has been partly updated in October 2005. See section 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 2005