2-Chloropropionic acid

α - Chloropropionic

• 598-78-7 [( ±)- α -chloropropionic acid ]
• 29617-66-1 [(S )-2- chloropropionic acid ]
• 16987-02-3 [( ±)- α -chloropropionic acid, sodium salt ]
• 74533-11-2 [L (-)- α -chloropropionic acid, sodium salt ]

Colorless to yellowish, almost odorless liquid

Liquid

1.26 g · cm -3

-12 ° C.

186 ° C

0.31 mbar ( 20 ° C)

2.8

• Miscible with water
• Miscible with all common solvents

1.4380 (20 ° C)

Risk

535-800 mg · kg -1 ( LD50, rat, oral)

-522.5 KJ / mol

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2-chloropropionic acid is a chemical compound from the group of propionic acid derivatives.

Production and representation

2- Chloropropionic can be obtained by chlorination of propionic acid with PCl3, S2Cl2 or chlorosulfonic acid. L- enantiomer is prepared from D -lactic acid and thionyl chloride.

Properties

2- Chloropropionic is a colorless to yellowish, nearly odorless liquid. Above 60 ° C it begins to decompose, hydrogen chloride, carbon monoxide and carbon dioxide produced.

Use

2-chloropropionic acid is used for the production of dyes, pharmaceuticals and herbicides ( phenoxypropionic acid derivatives ).

The reduction of ( S)-2 -chloropropionic acid with lithium aluminum hydride gives (S )-2- chloropropanol, the simplest chlorine alcohol which is further reacted with potassium hydroxide to (R) - methyloxirane.

Related compounds

• 3- Chloropropionic, CAS: 107-94-8