Chlorbufam
Agent Name
Chlorbufam
CAS Number
1967-16-4
Formula
C11-H10-Cl-N-O2
Major Category
Pesticides
Synonyms
1-Butyn-3-yl m-chlorophenylcarbamate; 1-Methyl-2-propynyl m-chlorocarbanilate; 1-Methyl-2-propynyl m-chlorophenylcarbamate; 1-Methylprop-2-ynyl 3-chlorocarbanilate; 1-Methylprop-2-ynyl 3-chlorophenylcarbamate; 1-Methylpropynyl 3-chlorophenylcarbamate; 1-Methylpropynyl ester of 3-chlorophenylcarbamic acid; 3-Butyn-2-ol, m-chlorocarbanilate; 3-Butynyl-m-chlorocarbanilate; 3-Chlorophenylcarbamic acid 1-methylpropynyl ester; 3-Chlorphenyl-carbamidsaure-butin-(1)-yl(3)-ester [German]; BICP; BIPC; BIPC (the herbicide); Butyn-1-ol-3-ester of m-chlorophenylcarbamic acid; Carbamic acid, (3-chlorophenyl)-, 1-methyl-2-propynyl ester; Carbanilic acid, m-chloro-, 1-methyl-2-propynyl ester; Chlorbufame [ISO-French]; Chlorbupham; Chlorobufam; Grisemin; Grisin; IEM-1-15; Isobutinyl-N-(3-chlorphenyl)-carbamat [German]; [ChemIDplus] UN2757
Category
Herbicides, Carbamate
Description
Colorless solid; [HSDB]
Sources/Uses
Used as selective pre-emergence herbicide for control of grasses and broad-leaved weeds in onions, bulb flowers, and other crops; Usually used in combination with other herbicides; WHO classifies Chlorbufam as "believed to be obsolete or discontinued"; [HSDB]
Comments
The hydrolysis product is 3-chloroaniline, one of the most common causes of industrial methemoglobinemia in the past; [HSDB] May cause irritation; May cause CNS depression; [MSDSonline] See "3-Chloroaniline."
Restricted
No longer registered as a pesticide for use in the US; [HSDB]
Biomedical References
Exposure Assessment
Vapor Pressure
1.58E-05 mm Hg
Explanatory Notes
The Guide in the Emergency Response Guidebook is for "Carbamate pesticide, solid, toxic."
Adverse Effects
Methemoglobinemia
MetHgb is secondary toxic effect
Diseases, Processes, and Activities Linked to This Agent
Processes
Industrial Processes with risk of exposure: