Chloramben
Title: Chloramben
CAS Registry Number: 133-90-4
CAS Name: 3-Amino-2,5-dichlorobenzoic acid
Molecular Formula: C7H5Cl2NO2
Molecular Weight: 206.03
Percent Composition: C 40.81%, H 2.45%, Cl 34.42%, N 6.80%, O 15.53%
Literature References: Selective pre-emergence herbicide. Prepn: S. R. McLane et al., US 3014063 (1961 to Amchem). Activity: A. J. Tafuro, Proc. Northeast. Weed Control Conf. 1959, 423. Degradn in soil: R. E. Wildung et al., Weed Res. 8, 213 (1968). Carcinogenicity study: J. F. Robens, Vet. Hum. Toxicol. 22, 328 (1980).
Properties: Cryst, mp 200-201°. Vapor press at 100°: 7 ´ 10-3 mm Hg. Soly in water at 25°: 700 mg/l. Soly in (g/100 ml): acetone 23.3; methanol 22.3; ethanol 17.3; chloroform 0.09; benzene 0.02.
Melting point: mp 200-201°
 
Derivative Type: Ammonium salt
Manufacturers' Codes: ACPM-629
Trademarks: Amiben (Rhone-Poulenc)
Molecular Formula: C7H8Cl2N2O2
Molecular Weight: 223.06
Percent Composition: C 37.69%, H 3.61%, Cl 31.79%, N 12.56%, O 14.35%
Properties: mp 194-197° (dec). Soly in (g/100 gm) at 25°: water 29.6; ethanol 6.9; isopropanol 1.7. Soly in water at 20°: 120 mg/l.
Melting point: mp 194-197° (dec)
 
Derivative Type: Methyl ester
Manufacturers' Codes: Amchem 65-81B
Trademarks: Vegiben
Molecular Formula: C8H7Cl2NO2
Molecular Weight: 220.05
Percent Composition: C 43.67%, H 3.21%, Cl 32.22%, N 6.37%, O 14.54%
Properties: mp 63-64°. Soly in water at 20°: 120 mg/l.
Melting point: mp 63-64°
 
Use: Herbicide.
 
 
Status: This monograph has been retired and is no longer subject to revision or update.

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