Asulam

Description

Asulam · CAS 3337-71-1 · C8H10N2O4S. UNII 0Y5ASM7P5S. Melting Point: 144.2 °C; Melting Point: MP: 143-144 °C (decomposes); Solubility: In water, 5.0X10+3 mg/L at 22 °C.

Identification

CAS Registry Number	3337-71-1
PubChem CID	18752
Molecular formula	C8H10N2O4S
IUPAC name	methyl N-(4-aminophenyl)sulfonylcarbamate
UNII (FDA)	0Y5ASM7P5S

Computed Descriptors

Molecular Weight	230.24
XLogP3	-0.3
Hydrogen Bond Donor Count	2
Hydrogen Bond Acceptor Count	5
Rotatable Bond Count	3
Exact Mass	230.03612798
Monoisotopic Mass	230.03612798
Topological Polar Surface Area	107
Heavy Atom Count	15
Formal Charge	0

Physical & Chemical Properties

Melting Point	144.2 °C
Melting Point	MP: 143-144 °C (decomposes)
Solubility	In water, 5.0X10+3 mg/L at 22 °C
Solubility	In water, 5 g/L
Solubility	Solubility: water, 0.5%
Vapor Pressure	0.00000144 [mmHg]
LogP	log Kow = -0.27
LogP	-0.27
Dissociation Constants	pKa = 4.82

Physical description & handling notes

• White solid; [Merck Index]
• White crystals
• Colorless crystals
• Stable in boiling water over 6 hours
• For more Solubility (Complete) data for Asulam (7 total), please visit the HSDB record page.
• When heated to decomposition it emits very toxic fumes of /nitrogen oxides and sulfur oxides/.

Regulatory Status

GHS notification summary	4.2% (3 / 71)

GHS Hazard Classification

GHS notification summary	4.2% (3 / 71)
Reported hazard statements	H302 (95.8%), H410 (100%)

Documented Uses

• Used as selective pre-emergence herbicide mainly on sugarcane; Also used on ornamentals, turf, and other non-cropland; The only registered product is the sodium salt (Asulam-sodium CAS # 2302-17-2) soluble/concentrate liquid; [Reference #1] Available in the EU as aqueous solution of Asulam-sodium equivalent to 400 g/L Asulam; Designed for use on spinach with other food and feed crop, non-cropland, and grassland uses; [EFSA]
• Asulam (methyl sulfanilylcarbamate) is a herbicide used for weed control on sugarcane, Christmas tree plantations, ornamentals, turf, and noncropland uses. Asulam is formulated into and applied as the asulam sodium salt.
• Asulam, a cell-division inhibitor, is a selective, systemic herbicide, translocated, used for the control of annual and perennial grasses and broad-leaved weeds in a variety of crops, grassland, noncropland, and forestry.
• Asulam is produced by reaction of 4-aminobenzenesulfonamide, after protection of the amino group, with ethyl chloroformate in the presence of a base.
• Preparation: Belgium patent 622214 (1963 to May & Baker).
• Registration Notes: Canada: Asulox F for wild oat control in flaxseed. Western Europe: For preemergence annual weed control in spinach. Western Europe, Australia: For control of Dock (Rumex) in pastures, orchards; bracken in pastures, forestry and noncropland; wild oat and certain broadleaf weeds in oilseed poppy. Japan: Asilan for annual weed control in mulberry and zoysia turf.

Synonyms

ASULAM; 3337-71-1; Asulox; Asilan; Asulox F; Jonnix; Plakin; Asulox 40; Methyl sulfanilylcarbamate; Methyl sulphanilylcarbamate; MB 9057; Asulame; Methyl sulfanilyl carbamate; M and B 9057; Methyl N-(4-aminobenzenesulfonyl)carbamate; Carbamic acid, [(4-aminophenyl)sulfonyl]-, methyl ester

Frequently Asked Questions

What are the CAS number and molecular formula of Asulam?

CAS 3337-71-1; molecular formula C8H10N2O4S; molecular weight — g/mol.

What other names is Asulam known by?

ASULAM, 3337-71-1, Asulox, Asilan, Asulox F, Jonnix.

Is Asulam classified as hazardous?

4.2% of GHS notifications report no hazard classification (3 of 71).

What are the key physical properties of Asulam?

Melting Point: 144.2 °C; Melting Point: MP: 143-144 °C (decomposes); Solubility: In water, 5.0X10+3 mg/L at 22 °C; Solubility: In water, 5 g/L.

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.