Cyhalofop-butyl Chemical Properties

Melting point:

47.0 to 51.0 °C

Boiling point:

449.1±45.0 °C(Predicted)

Density 

1.21±0.1 g/cm3(Predicted)

Flash point:

122℃

storage temp. 

Sealed in dry,2-8°C

solubility 

soluble in Methanol

form 

Solid

color 

White to Almost white

InChIKey

TYIYMOAHACZAMQ-CQSZACIVSA-N

LogP

4.400 (est)

CAS DataBase Reference

122008-85-9(CAS DataBase Reference)

EPA Substance Registry System

Cyhalofop-butyl (122008-85-9)

Safety Information

Hazard Codes 

Xn,N

Risk Statements 

22-50

Safety Statements 

61

RIDADR 

UN 3077 9 / PGIII

WGK Germany 

3

HazardClass 

9

PackingGroup 

III

HS Code 

29269090

Hazardous Substances Data

122008-85-9(Hazardous Substances Data)

Cyhalofop-butyl Usage And Synthesis

Precautions for Use

Cyhalofop-butyl does not present any useful pre-emergence activity. It can be applied from germination to the four-leafstage of barnyard grass with granular formulations, and from germination to the six-leaf stage with liquid formulations. lt israinfast within 2-3 hours and has no residual activity. The US product label states that 2.3 L/ha of crop oil concentrateshould be added to the tank for all treatments. The product poses low risk to nearby crops such as cotton, soybeans andvegetables but Dow advises that drift to more sensitive crops such as maize, nectarines, peaches, sugar cane and sorghum should be avoided.

Description

Cyhalofop-butyl is a post-emergence, aryloxyphenoxypropionate herbicide, which is used in controlling weeds in rice plantations. Its mode of action involves the inhibition of acetyl-coenzyme A carboxylase (ACCase) biosynthesis.
Cyhalofop-butyl has a low aqueous solubility and is non-volatile. It is non expected to be eprsistent in soil systems but may be persistent in some water systems depending on local conditions. Cyhalofop-butyl is moderately toxic to fish and aquatic plants but has a low toxicity ti aquatic invertebrates, birds and honeybees. It has a low mammalian oral toxicity.

Uses

Cyhalofop-butyl may be used as a reference standard in the determination of cyhalofop-butyl in rice samples using liquid chromatography coupled with diode array detector (LC-DAD).

Definition

ChEBI: Cyhalofop-butyl is an aromatic ether.

Trade name

Clincher (Technical)
Clincher (CA)
Clincher (SF)
U.S. Producer: Dow AgroSciences LLC

Mode of action

Cyhalofop-butyl is an inhibitor of acetyl coenzyme -A carboxylase, a pivotal enzyme in plant fatty acid biosynthesis.

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