氯氟唑

Description

chlorflurazole · CAS 3615-21-2 · C8H3Cl2F3N2. UNII ZXH1IGJ511. Melting Point: 415 to 417 °F (EPA, 1998); Melting Point: 213-214 °C; Density: 3.49 @25 °C.

Identification

CAS Registry Number	3615-21-2
PubChem CID	19232
Molecular formula	C8H3Cl2F3N2
IUPAC name	4,5-dichloro-2-(trifluoromethyl)-1H-benzimidazole
UNII (FDA)	ZXH1IGJ511

Computed Descriptors

Molecular Weight	255.02
XLogP3	3.6
Hydrogen Bond Donor Count	1
Hydrogen Bond Acceptor Count	4
Rotatable Bond Count	0
Exact Mass	253.9625380
Monoisotopic Mass	253.9625380
Topological Polar Surface Area	28.7
Heavy Atom Count	15
Formal Charge	0

Physical & Chemical Properties

Melting Point	415 to 417 °F (EPA, 1998)
Melting Point	213-214 °C
Density	3.49 @25 °C
Vapor Pressure	4e-05 mmHg at 72.5 °F (EPA, 1998)
Vapor Pressure	0.0000029 [mmHg]
Vapor Pressure	4X10-5 MM HG @ 22.5 °C
Vapor Pressure	0.00004 [mm Hg] @22.5 °C
LogP	3.49

Physical description & handling notes

• Benzimidazole, 4,5-dichloro-2-(trifluoromethyl)- appears as a crystalline solid. Fine white needles when pure; the commercial material is brownish. Used as an herbicide. (EPA, 1998)
• Solid (white when pure); Commercial product is brownish; [HSDB]
• CRYSTALLINE SOLID, FORMING FINE WHITE NEEDLES WHEN PURE.
• (Non-Specific -- Pesticide, solid, n.o.s.) May burn, but does not ignite readily. (EPA, 1998)
• 69 PPM IN WATER @ 25 °C; SPARINGLY SOL IN METHYL NAPHTHALENE & BENZENE; SOL UP TO 25% IN ETHANOL, ETHER, CHLOROFORM, PROPYLENE GLYCOL, GLYCEROL FORMAL, METHYL NAPHTHALENE; VERY SOL IN ACETONE.
• ... VOLATILITY LOW ... AQUEOUS SALT FORMULATIONS ARE BELIEVED CHEMICALLY STABLE IN AIR.

Documented Uses

• Used as herbicide; Formerly manufactured by Fisons LTD; [HSDB]
• FORMERLY MANUFACTURED BY FISONS LTD.
• INCOMPATIBILITIES: AQUEOUS SALT FORMULATIONS ARE COMPATIBLE WITH SIMILARLY FORMULATED HORMONE WEED KILLERS & WITH TRIAZINES, BUT AMINE SALTS OF HORMONE HERBICIDES ARE NOT COMPATIBLE WITH CHLORFLURAZOLE. ... TREATMENT CAUSES SCORCHING & DRYING OUT OF SUSCEPTIBLE FOLIAGE WITHIN 2-6 DAYS. CHLORFLURAZOLE IS AN ACTIVE UNCOUPLER OF PHOSPHORYLATION IN PLANTS, & IT ALSO APPEARS TO INHIBIT THE HILL REACTION.
• INCOMPATIBILITIES: ON ACCOUNT OF THE ALKALINITY, AQUEOUS SALT FORMULATIONS SHOULD NOT BE MIXED WITH VERY ALKALI-UNSTABLE FUNGICIDES OR INSECTICIDES.
• FOLLOWING ORAL ADMIN TO RATS & RABBITS OF (14)C-LABELED 4,5-DICHLORO-2-TRIFLUOROMETHYLBENZIMIDAZOLE, (14)C WAS EXCRETED IN THE URINE IN 3 DAYS.
• YIELDS 4,5-DICHLORO-6-HYDROXY-2-TRIFLUOROMETHYLBENZIMIDAZOLE & 4,5-DICHLORO-7-HYDROXY-2-TRIFLUOROMETHYLBENZIMIDAZOLE IN RABBIT & RAT. /FROM TABLE/

Synonyms

Chlorflurazole; Chlorflurazole [ISO]; CHLOROFLUORAZOLE; Caswell No. 327A; HSDB 2764; UNII-ZXH1IGJ511; EPA Pesticide Chemical Code 327200; BRN 0960437; Benzimidazole, 4,5-dichloro-2-(trifluoromethyl)-; CHLORFLURAZOLE [HSDB]; DTXSID0041773; RefChem:125313; DTXCID8021773; 4,5Dichloro2trifluoromethylbenzimidazole; 4,5Dichloro2(trifluoromethyl)benzimidazole; 4,5Dichloro2(trifluoromethyl)1Hbenzimidazole

Frequently Asked Questions

What are the CAS number and molecular formula of chlorflurazole?

CAS 3615-21-2; molecular formula C8H3Cl2F3N2; molecular weight — g/mol.

What other names is chlorflurazole known by?

Chlorflurazole, Chlorflurazole [ISO], CHLOROFLUORAZOLE, Caswell No. 327A, HSDB 2764, UNII-ZXH1IGJ511.

What are the key physical properties of chlorflurazole?

Melting Point: 415 to 417 °F (EPA, 1998); Melting Point: 213-214 °C; Density: 3.49 @25 °C; Vapor Pressure: 4e-05 mmHg at 72.5 °F (EPA, 1998).

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.