1,3-Butanediol

• Butane -1 ,3 -diol
• 1,3-butylene glycol
• 1,3 -BG

Colorless, almost odorless liquid

Liquid

1.01 g · cm -3

-50 ° C

207 ° C

8 Pa ( 20 ° C)

• Miscible with water
• Soluble in ethanol and acetone

1.44 (20 ° C)

18.610 mg · kg -1 ( LD50, rat, oral)

Template: Infobox chemical / molecular formula search available

1,3-butanediol is a chemical compound selected from the group consisting of alcohols, more precisely of the diols or butanediols.

Production and representation

By base-catalyzed aldol condensation of acetaldehyde 3- hydroxybutanal is obtained in the first step. This can be further processed by hydrogenation, for example Raney nickel, to 1,3- butanediol.

A possible consequence is the product obtained by acid-catalyzed dehydration of 1,3-butadiene.

Properties

1,3-butanediol, which is also synonymously referred to as 1,3-butylene glycol is a chain organic compound, which consists of four to eight carbon atoms and two hydroxyl groups, water, and thus is a diol.

1,3-butanediol has a chiral center at C3 carbon.

The compound is soluble in the short-chain alcohols, ketones such as acetone, esters, and water, but hardly soluble in diethyl ether and insoluble in aliphatic hydrocarbons, benzene and carbon tetrachloride.

Use

The major part of 1,3 -butanediol is used as the intermediate for the production of plasticizers for plastics. But also for the production of polyester resins, polyurethanes and acrylates of 1,3- butanediol is used. In addition, 1,3-butanediol is a good drying agent that can be used in animal feeds, cosmetics and tobacco.

Since it is non-toxic and has a slight bacteriostatic and fungicidal action, it can be used in surfactants or solvents for flavorings or as plasticizers for plastics packaging.