Butyraldehyde

• Butyraldehyde
• N- Butanal
• Buttersäurealdehyd
• Butolyd
• Butyrylhydruer
• Propylhydrocarbonoxid

Colorless liquid with a pungent odor

Liquid

0.80 g · cm -3

-97.1 ° C

75 ° C

113 hPa ( 20 ° C)

Poorly in water ( 37 g · l-1 at 20 ° C)

1.3843 (20 ° C)

Risk

20 ml · m-3, 64 mg · m-3

-239.2 KJ · mol -1

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Butanal or butyraldehyde is a chemical compound belonging to the lower aldehydes and a colorless liquid with a pungent odor. Derived from butanal one knows the isomeric compound isobutanal ( isobutyraldehyde ).

Production and representation

Industrially, n- butanal is synthesized only by the hydroformylation of propene. As a byproduct iso -butanal (2- methyl propanal ):

Butanal is also by gentle oxidation of the corresponding alcohol 1- butanol accessible.

Properties

At a temperature of 190 ° C, butanal Explosive mixtures with air ignites itself lie in a concentration range from 1.7 to 12.5 vol - % butanal ago.

Butanal polymerizes on heating, and under the influence of acids and alkali. It reacts with oxidizing agents, strong acids, strong bases and amines.

Use

Butanal is required for the production of vulcanization accelerators, synthetic resins, and plasticizers. It is based on synthetic tanning and fragrances.

Safety

The substance can be absorbed into the body by inhalation of its vapor and by ingestion. The eyes, the skin and the respiratory tract are irritated. The vapor is heavier than air and may spread on the floor.

The formation of explosive peroxides is possible.