4-Chlorocinnamic acid
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4-Chlorocinnamic acid
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CAS No:
1615-02-7
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Formula:
C9H7ClO2
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Chemical Name:
4-Chlorocinnamic acid
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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
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CAS No:
Characteristics
37.3
2.4
White Fine Crystalline Powder
1.2377 (rough estimate)
248 °C
260.71°C (rough estimate)
150.5±20.9 °C
1.5426 (estimate)
Room temperature.
9.47E-05mmHg at 25°C
Safety Information
NONH for all modes of transport
3
22-36/37/38-20/21/22
36-28A-26-24/25
GD8490000
Xn,Xi
Irritant
Stable under normal temperatures and pressures.
P264, P270, P280, P301+P312, P302+P352, P305+P351+P338, P321, P330, P332+P313, P337+P313, P362, P501
H302
4-Chlorocinnamic acid Use and 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%.
Used in the synthesis of herbicides
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