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4-Chlorocinnamic acid

4-Chlorocinnamic acid structure

CAS No:
1615-02-7
Formula:
C9H7ClO2
Chemical Name:
4-Chlorocinnamic acid
Synonyms:
2-Propenoic acid,3-(4-chlorophenyl)-;Cinnamic acid,p-chloro-;3-(4-Chlorophenyl)-2-propenoic acid;p-Chlorocinnamic acid;4-Chlorocinnamic acid;3-(p-Chlorophenyl)acrylic acid;3-(4-Chlorophenyl)propenoic acid;3-(4-Chlorophenyl)acrylic acid;NSC 1509;NSC 2756
Categories:
Pharmaceutical Intermediates > Bulk Drug Intermediates

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Description

white to light yellow crystal powder

4-Chlorocinnamic acid Basic Attributes

Molecular Weight：

182.6

Exact Mass：

182.60

BRN：

1365308

EC Number：

216-564-8

HScode：

29163990

Characteristics

PSA：

37.3

XLogP3：

2.4

Appearance：

White Fine Crystalline Powder

Density：

1.2377 (rough estimate)

Melting Point：

248 °C

Boiling Point：

260.71°C (rough estimate)

Flash Point：

150.5±20.9 °C

Refractive Index：

1.5426 (estimate)

Storage Conditions：

Room temperature.

Vapor Pressure：

9.47E-05mmHg at 25°C

Safety Information

Transport codes：

NONH for all modes of transport

wgk germany：

hazard class code：

22-36/37/38-20/21/22

safety instructions：

36-28A-26-24/25

RTECS Number：

GD8490000

Marks：

Xn,Xi

Hazard note：

Irritant

Stability/Shelf Life：

Stable under normal temperatures and pressures.

Precautionary statement(s)：

P264, P270, P280, P301+P312, P302+P352, P305+P351+P338, P321, P330, P332+P313, P337+P313, P362, P501

Hazard Statements：

H302

4-Chlorocinnamic acid Use and Manufacturing

Methods of Manufacturing

Derived from the reaction of p-chlorobenzaldehyde and acetic anhydride. The p-chlorobenzaldehyde, acetic anhydride and sodium acetate were reacted together at 180°C for 13h. After the reaction is completed, cool slightly, pour it into water, filter, wash the filter cake with water, and dissolve it repeatedly with ammonia water until only a small amount of brown-yellow viscous material remains. The obtained ammonium salt solution is filtered, p-chlorocinnamic acid is re-precipitated with 3N dilute sulfuric acid, and the product is filtered and dried. The yield is about 80%.

Uses

Used in the synthesis of herbicides

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