Chlorsulfuron

CAS 64902-72-3C12H12ClN5O4SMW 357.77

Chlorsulfuron (CAS 64902-72-3) — formula C12H12ClN5O4S, molecular weight 357.77.

Product Overview

CAS Number	64902-72-3
Molecular Formula	C12H12ClN5O4S
Molecular Weight	357.77
Melting Point	176 °C
LogP	1.54
Applications	Uses: Used as pre- and post-emergence herbicide to control weeds on cereal grains, pasture, rangeland, industrial sites, and turf grass, [Reference #1], Farming (Pesticides) [Category: Industry], For chlorsulfuron (USEPA, OPP Pesticide Code: 118601) ACTIVE products with label matches., SRP: Registered for use in the U.S. but approved pesticide uses may change periodically and so federal, state and local authorities must be consulted for currently approved uses., A selective preemergence or early postemergence herbicide used at low rates., This is a man-made compound that is used as a pesticide., Methods of Manufacturing: Chlorsulfuron is produced by reaction of 2-sulfonylisocyanate chlorobenzene with 2-amino-4, 6-dimethoxy-1, 3, 5-triazine., Prepn: G. Levitt, German patent 2715786, idem, United States of America patent 4127405 (1977, 1978 both to du Pont)., Formulations, Preparations: NUP 08136 (Nufarm Americas, Inc): Active ingredient: chlorsulfuron 15% and metsulfuron 48%., Nufarm Chlorsulf SPC 75 WDG Herbicide (Nufarm Americas, Inc): Active ingredient: chlorsulfuron 75%., ETI 123 01 H-D2 (Nufarm Americas, ETI 122 01 H-D (Nufarm Americas, Inc): Active ingredient: chlorsulfuron 62.5% and metsulfuron 12.5%., For more Formulations, Preparations (Complete) data for Chlorsulfuron (33 total), please visit the HSDB record page., General Manufacturing Information: The WHO Recommended Classification of Pesticides by Hazard identifies Chlorsulfuron (technical grade) as unlikely to present an acute hazard in normal use, Main Use: herbicide., Application methods: Preemergence or early postemergence treatments show the most activity on annual grass weeds and broadleaf weeds. Later postemergence treatments are effective on most broadleaf weeds but less effective on grasses. Treatments may be made with aerial or ground equipment. Rates: 0.2-0.5 oz, acre preemergence or postemergence on wheat and only postemergence on barley, oats, rye and flax. 0.5-1.5 oz, acre for fallow weed control. Usual carrier: water 1.5-40 gallons, acre plus a surfactant @ 0.1% by volume for control of emerged weeds.

Applications

Documented applications: Uses: Used as pre- and post-emergence herbicide to control weeds on cereal grains, pasture, rangeland, industrial sites, and turf grass, [Reference #1], Farming (Pesticides) [Category: Industry], For chlorsulfuron (USEPA, OPP Pesticide Code: 118601) ACTIVE products with label matches., SRP: Registered for use in the U.S. but approved pesticide uses may change periodically and so federal, state and local authorities must be consulted for currently approved uses., A selective preemergence or early postemergence herbicide used at low rates., This is a man-made compound that is used as a pesticide., Methods of Manufacturing: Chlorsulfuron is produced by reaction of 2-sulfonylisocyanate chlorobenzene with 2-amino-4, 6-dimethoxy-1, 3, 5-triazine., Prepn: G. Levitt, German patent 2715786, idem, United States of America patent 4127405 (1977, 1978 both to du Pont)., Formulations, Preparations: NUP 08136 (Nufarm Americas, Inc): Active ingredient: chlorsulfuron 15% and metsulfuron 48%., Nufarm Chlorsulf SPC 75 WDG Herbicide (Nufarm Americas, Inc): Active ingredient: chlorsulfuron 75%., ETI 123 01 H-D2 (Nufarm Americas, ETI 122 01 H-D (Nufarm Americas, Inc): Active ingredient: chlorsulfuron 62.5% and metsulfuron 12.5%., For more Formulations, Preparations (Complete) data for Chlorsulfuron (33 total), please visit the HSDB record page., General Manufacturing Information: The WHO Recommended Classification of Pesticides by Hazard identifies Chlorsulfuron (technical grade) as unlikely to present an acute hazard in normal use, Main Use: herbicide., Application methods: Preemergence or early postemergence treatments show the most activity on annual grass weeds and broadleaf weeds. Later postemergence treatments are effective on most broadleaf weeds but less effective on grasses. Treatments may be made with aerial or ground equipment. Rates: 0.2-0.5 oz, acre preemergence or postemergence on wheat and only postemergence on barley, oats, rye and flax. 0.5-1.5 oz, acre for fallow weed control. Usual carrier: water 1.5-40 gallons, acre plus a surfactant @ 0.1% by volume for control of emerged weeds..

Technical Profile

What this product is

Chlorsulfuron is a chemical compound with CAS registry number 64902-72-3 and molecular formula C12H12ClN5O4S (molecular weight 357.77).

Identification

CAS number: 64902-72-3

Its molecular formula C12H12ClN5O4S comprises 12 C, 12 H, 1 Cl, 5 N, 4 O, 1 S atoms.

Also known as: Chlorsulfuron · 氯磺隆

Frequently Asked Questions

What is the CAS number of Chlorsulfuron?

The CAS registry number of Chlorsulfuron is 64902-72-3.

What is the molecular formula and molecular weight of Chlorsulfuron?

Molecular formula C12H12ClN5O4S, molecular weight 357.77.

What other names is Chlorsulfuron known by?

It is also registered under: Chlorsulfuron, 氯磺隆.

What are the documented applications of Chlorsulfuron?

Recorded applications: Uses: Used as pre- and post-emergence herbicide to control weeds on cereal grains, pasture, rangeland, industrial sites, and turf grass, [Reference #1], Farming (Pesticides) [Category: Industry], For chlorsulfuron (USEPA, OPP Pesticide Code: 118601) ACTIVE products with label matches., SRP: Registered for use in the U.S. but approved pesticide uses may change periodically and so federal, state and local authorities must be consulted for currently approved uses., A selective preemergence or early postemergence herbicide used at low rates., This is a man-made compound that is used as a pesticide., Methods of Manufacturing: Chlorsulfuron is produced by reaction of 2-sulfonylisocyanate chlorobenzene with 2-amino-4, 6-dimethoxy-1, 3, 5-triazine., Prepn: G. Levitt, German patent 2715786, idem, United States of America patent 4127405 (1977, 1978 both to du Pont)., Formulations, Preparations: NUP 08136 (Nufarm Americas, Inc): Active ingredient: chlorsulfuron 15% and metsulfuron 48%., Nufarm Chlorsulf SPC 75 WDG Herbicide (Nufarm Americas, Inc): Active ingredient: chlorsulfuron 75%., ETI 123 01 H-D2 (Nufarm Americas, ETI 122 01 H-D (Nufarm Americas, Inc): Active ingredient: chlorsulfuron 62.5% and metsulfuron 12.5%., For more Formulations, Preparations (Complete) data for Chlorsulfuron (33 total), please visit the HSDB record page., General Manufacturing Information: The WHO Recommended Classification of Pesticides by Hazard identifies Chlorsulfuron (technical grade) as unlikely to present an acute hazard in normal use, Main Use: herbicide., Application methods: Preemergence or early postemergence treatments show the most activity on annual grass weeds and broadleaf weeds. Later postemergence treatments are effective on most broadleaf weeds but less effective on grasses. Treatments may be made with aerial or ground equipment. Rates: 0.2-0.5 oz, acre preemergence or postemergence on wheat and only postemergence on barley, oats, rye and flax. 0.5-1.5 oz, acre for fallow weed control. Usual carrier: water 1.5-40 gallons, acre plus a surfactant @ 0.1% by volume for control of emerged weeds..

PubChem Public Data

Independent reference data for Chlorsulfuron (CAS 64902-72-3), compiled from public chemistry databases.

Registry identifiers across databases

CAS Registry Number	64902-72-3
PubChem CID	47491
Molecular formula	C12H12ClN5O4S
IUPAC name	1-(2-chlorophenyl)sulfonyl-3-(4-methoxy-6-methyl-1,3,5-triazin-2-yl)urea
UNII (FDA)	O6S620ML45

Computed descriptors

Molecular Weight	357.77
XLogP3	2.3
Hydrogen Bond Donor Count	2
Hydrogen Bond Acceptor Count	7
Rotatable Bond Count	4
Exact Mass	357.0298527
Monoisotopic Mass	357.0298527
Topological Polar Surface Area	132
Heavy Atom Count	23

Physicochemical values on record

Melting Point	176 °C
Melting Point	MP: 174-178 °C
Solubility	In water, 125 mg/L at 25 °C
Vapor Pressure	2.25X10-11 mm Hg at 25 °C
Vapor Pressure	0.81313 [mm Hg] @25 °C
LogP	1.54
Dissociation Constants	pKa = 3.4
Collision Cross Section	175.97 Å² [M+H]+
Collision Cross Section	179.87 Å² [M-H]-
Collision Cross Section	184.55 Å² [M+Na]+

Documented uses on record

Synonyms and trade names

CHLORSULFURON; 64902-72-3; Glean; Chlorsulfon; Telar; Trilixon; 2-Chlorsulfuron; Glean C; 1-(2-chlorophenyl)sulfonyl-3-(4-methoxy-6-methyl-1,3,5-triazin-2-yl)urea; Glean 20DF; DPX 4189; DTXSID7023980; O6S620ML45; 1-(2-Chlorophenylsulfonyl)-3-(4-methoxy-6-methyl-1,3,5-triazin-2-yl)urea; 2-Chloro-N-((4-methoxy-6-methyl-1,3,5-triazin-2-yl)aminocarbonyl)-benzenesulfonamide; 1-((o-Chlorophenyl)sulfonyl)-3-(4-methoxy-6-methyl-s-triazin-2-yl)urea

GHS hazard classification

Reported hazard statements	H400, H410

H400: Very toxic to aquatic life [Warning Hazardous to the aquatic environment, acute hazard]

H410: Very toxic to aquatic life with long lasting effects [Warning Hazardous to the aquatic environment, long-term hazard]

What the public record says

Chlorsulfuron · CAS 64902-72-3 · C12H12ClN5O4S. UNII O6S620ML45. Melting Point: 176 °C; Melting Point: MP: 174-178 °C; Solubility: In water, 125 mg/L at 25 °C.

Physical description and handling notes

Source: PubChem / Wikidata; the batch COA governs where values differ.