International Chemical Safety Cards

BUTYRALDEHYDE

ICSC: 0403

Butanal
Butyl aldehyde
C₄H₈O / CH₃CH₂CH₂CHO
Molecular mass: 72.1

ICSC #    0403
CAS #     123-72-8
RTECS # ES2275000
UN #        1129
EC #         605-006-00-2
March 25, 1996 Peer reviewed

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

STORAGE

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.

Fireproof. Separated from incompatible materials . See Chemical Dangers. Cool. Keep in the dark.

F symbol
R: 11
S: 2-9-29-33
UN Hazard Class: 3
UN Packing Group: II

SEE IMPORTANT INFORMATION ON BACK

ICSC: 0403

Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

International Chemical Safety Cards

BUTYRALDEHYDE

ICSC: 0403

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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 20°C.

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

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:

PHYSICAL
PROPERTIES

Boiling point: 75°C
Melting point: -99°C
Relative density (water = 1): 0.8
Solubility in water, g/100 ml: 7
Vapour pressure, kPa at 20°C: 12.2

Relative vapour density (air = 1): 2.5
Flash point: -7°C
Auto-ignition temperature: 230°C
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.

N O T E S

Check for peroxides prior to distillation; eliminate if found.

Transport Emergency Card: TEC (R)-694

NFPA Code: H3; F3; R2;

ADDITIONAL INFORMATION

ICSC: 0403	BUTYRALDEHYDE
(C) IPCS, CEC, 1994

IMPORTANT LEGAL NOTICE:

Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH, the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use. The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.