Cyhalofop-butyl

Synonym(s):Butyl (R)-2-[4-(4-cyano-2-fluorophenoxy)phenoxy]propionate

CAS NO.：122008-85-9
Empirical Formula: C20H20FNO4
Molecular Weight: 357.38
MDL number: MFCD01631151
SAFETY DATA SHEET (SDS)
Update Date: 2026-07-31 15:25:14

What is Cyhalofop-butyl?

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.

The Uses of Cyhalofop-butyl

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.

Properties of Cyhalofop-butyl

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	neat
form	Solid
color	White to Almost white
CAS DataBase Reference	122008-85-9(CAS DataBase Reference)
EPA Substance Registry System	Cyhalofop-butyl (122008-85-9)

Safety information for Cyhalofop-butyl

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07 Health Hazard GHS08 Environment GHS09
GHS Hazard Statements	H302:Acute toxicity,oral H373:Specific target organ toxicity, repeated exposure H410:Hazardous to the aquatic environment, long-term hazard
Precautionary Statement Codes	P260:Do not breathe dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P270:Do not eat, drink or smoke when using this product. P273:Avoid release to the environment. P314:Get medical advice/attention if you feel unwell. P301+P312:IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.