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EntityQ424951· pop 10· linked from 164 articles

Also known as 4-(4-chloro-o-tolyloxy)butyric acid

MCPB, 2,4-MCPB, 4-(4-chloro-o-tolyloxy)butyric acid (IUPAC), or 4-(4-chloro-2-methylphenoxy)butanoic acid (CAS) is a selective phenoxybutyric herbicide. In the United States it is registered for use on pea crops before flowering, for post-emergence control of broadleaf annual and perennial weeds including Canadian thistle, buttercup, mustard, purslane, ragweed, common lambsquarters, pigweed, smartweed, sowthistle, and morning glory. It has low to moderate acute toxicity, with kidney and liver effects as the main hazard concerns.

Wikidata facts

Subclass of
carboxylic acid
Mass
228.055
Has use
herbicide
Show 3 more facts
canonical SMILES
CC1=C(C=CC(=C1)Cl)OCCCC(=O)O
chemical formula
C₁₁H₁₃ClO₃
Commons category
MCPB
Sources (2)

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Encyclopedic overview

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Contents
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MCPB, 2,4-MCPB, 4-(4-chloro-o-tolyloxy)butyric acid (IUPAC), or 4-(4-chloro-2-methylphenoxy)butanoic acid (CAS) is a selective phenoxybutyric herbicide. In the United States it is registered for use on pea crops before flowering, for post-emergence control of broadleaf annual and perennial weeds including Canadian thistle, buttercup, mustard, purslane, ragweed, common lambsquarters, pigweed, smartweed, sowthistle, and morning glory. It has low to moderate acute toxicity, with kidney and liver effects as the main hazard concerns.

It is registered in Australia, Canada, Hungary, New Zealand, the UK and the USA. It is not volatile, persistent, or likely to bioconcentrate.

Excerpted from Wikipedia’s “MCPB” article, available under the CC BY-SA 4.0 licence.

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