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Pyrazoxyfen

Pyrazoxyfen structure

CAS No:
71561-11-0
Formula:
C20H16Cl2N2O3
Chemical Name:
Pyrazoxyfen
Synonyms:
Ethanone,2-[[4-(2,4-dichlorobenzoyl)-1,3-dimethyl-1H-pyrazol-5-yl]oxy]-1-phenyl-;2-[[4-(2,4-Dichlorobenzoyl)-1,3-dimethyl-1H-pyrazol-5-yl]oxy]-1-phenylethanone;1,3-Dimethyl-4-(2,4-dichlorobenzoyl)-5-phenacyloxypyrazole;Pyrazoxyfen;SL 49;Paicer;SL 49 (herbicide);118258-43-8
Categories:
Agrochemicals > Herbicides

Description

Pyrazoxyfen is a member of the class of pyrazoles that is 1,3-dimethylpyrazole which is substituted at positions 4 and 5 by 2,4-dichlorobenzoyl and 2-oxo-2-phenylethoxy groups, respectively. A pro-herbicide (for the corresponding 5-hydroxypyrazole), it is used as a pre- or post-emergence herbicide for the control of annual and perennial weeds in rice. It has a role as a proherbicide, an agrochemical and a carotenoid biosynthesis inhibitor. It is a member of acetophenones, a member of pyrazoles and a dichlorobenzene.

Pyrazoxyfen Basic Attributes

Molecular Weight：

403.26

Exact Mass：

403.26

EC Number：

615-306-5

UNII：

FS6C1PT8FV

DSSTox ID：

DTXSID3058167

Characteristics

PSA：

61.2

XLogP3：

4.52800

Density：

1.33 g/cm3

Melting Point：

111.5 °C

Boiling Point：

599.9ºC at 760 mmHg

Refractive Index：

1.618

Water Solubility：

0.00 M

Storage Conditions：

0-6°C

Vapor Pressure：

3.60e-07 mmHg

Safety Information

Transport codes：

UN 3077 9 / PGIII

wgk germany：

hazard class code：

22-50

safety instructions：

RTECS Number：

KM5745000

Marks：

Xn,N

Precautionary statement(s)：

P301 + P312 + P330

Hazard Statements：

H302-H410

GHS Classification：

|Warning|H302 (100%): Harmful if swallowed [Warning Acute toxicity, oral]|P264, P270, P273, P301+P312, P330, P391, and P501|Aggregated GHS information provided by 38 companies from 1 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.|Danger|H302: Harmful if swallowed [Warning Acute toxicity, oral]|P260, P264, P270, P301+P312, P305+P351+P338, P309+P311, P314, P330, P337+P313, P405, and P501|P260, P264, P270, P301+P312, P314, P330, and P501

Pyrazoxyfen Use and Manufacturing

Use Classification：

Agrochemicals -> Herbicides

Computed Properties

Molecular Weight:403.3
XLogP3:3.7
Hydrogen Bond Acceptor Count:4
Rotatable Bond Count:6
Exact Mass:402.0537978
Monoisotopic Mass:402.0537978
Topological Polar Surface Area:61.2
Heavy Atom Count:27
Complexity:541
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes