禾草灵

Description

Diclofop-methyl · CAS 51338-27-3 · C16H14Cl2O4. UNII 9T8QCB25UO. Boiling Point: 175-177 °C at 0.1 mm Hg; Melting Point: 39-41 °C; Flash Point: 38 °C (Closed cup).

Identification

CAS Registry Number	51338-27-3
PubChem CID	39985
Molecular formula	C16H14Cl2O4
IUPAC name	methyl 2-[4-(2,4-dichlorophenoxy)phenoxy]propanoate
UNII (FDA)	9T8QCB25UO

Computed Descriptors

Molecular Weight	341.2
XLogP3	4.8
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	4
Rotatable Bond Count	6
Exact Mass	340.0269143
Monoisotopic Mass	340.0269143
Topological Polar Surface Area	44.8
Heavy Atom Count	22
Formal Charge	0

Physical & Chemical Properties

Boiling Point	175-177 °C at 0.1 mm Hg
Melting Point	39-41 °C
Flash Point	38 °C (Closed cup)
Vapor Pressure	0.0000035 [mmHg]
Vapor Pressure	0.034 mPa at 20 °C
LogP	4.8

Physical description & handling notes

• Diclofop methyl appears as colorless crystals. Decomposed by either strong acid or base. Used as a selective herbicide.
• Colorless odorless solid; [HSDB]
• Colorless crystals
• Odorless
• In water at 22 °C, 3 mg/l. Readily soluble in common organic solvents, eg, acetone 2490, diethyl ether 2280, xylene 2530, ethanol 110, light petroleum (BP 60-95 °C) 60 (all in g/l at 20 °C).
• Decomposed by UV irradiation, and by strong acids and alkalis.

GHS Hazard Classification

Reported hazard statements	H302, H317, H400, H410

Documented Uses

• A restricted use herbicide for wheat, barley, and golf courses; [Reference #1]
• Control of broad-leafed plants in row crops; defoliants, general brush control. /Chlorophenoxy compounds; from table/
• Herbicide. Controls annual grassy weeds. In USA wheat, barley, lentils, flax, dry field peas (including Austrian winter peas) and on fallow land for control of annual grassy weeds. Internationally, Illoxan postemergence in wheat, barley, soybeans, sugar beats, vegetables, flax, potatoes.
• Selective herbicide for post-emergence control of annual grasses.
• Chlorophenoxy ester herbicides can ... be produced by direct reaction of chlorophenol with appropriate chloroacetic esters ... . /Chlorophenoxy herbicides/
• Chlorophenoxy herbicides are applied alone or as mixtures with other herbicides, in solutions, dispersions, or emulsions in water and/or oil, using equipment that produces large droplets to avoid spray drift. /Chlorophenoxy herbicides/

Synonyms

DICLOFOP-METHYL; 51338-27-3; Diclofop methyl; Illoxan; Hoegrass; Dichlorfop-methyl; Hoelon; Methyldiclofop; Methyl diclofop; Dichlordiphenprop; Methyl 2-[4-(2,4-dichlorophenoxy)phenoxy]propanoate; Diclofop methyl ester; Hoelon 3EC; (+-)-Diclofop-methyl; DTXSID0032605; HOE 23408

Frequently Asked Questions

What are the CAS number and molecular formula of Diclofop-methyl?

CAS 51338-27-3; molecular formula C16H14Cl2O4; molecular weight — g/mol.

What other names is Diclofop-methyl known by?

DICLOFOP-METHYL, 51338-27-3, Diclofop methyl, Illoxan, Hoegrass, Dichlorfop-methyl.

Is Diclofop-methyl classified as hazardous?

Hazard statements reported: H302, H317, H400, H410.

What are the key physical properties of Diclofop-methyl?

Boiling Point: 175-177 °C at 0.1 mm Hg; Melting Point: 39-41 °C; Flash Point: 38 °C (Closed cup); Vapor Pressure: 0.0000035 [mmHg].

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.