Bentazon

Description

Bentazon · CAS 25057-89-0 · C10H12N2O3S. UNII R4S7ZGZ9CT. Melting Point: 139.7 °C; Melting Point: 137-139 °C; Solubility: In water, 500 mg/L at 20 °C.

Identification

CAS Registry Number	25057-89-0
PubChem CID	2328
Molecular formula	C10H12N2O3S
IUPAC name	2,2-dioxo-3-propan-2-yl-1H-2λ6,1,3-benzothiadiazin-4-one
UNII (FDA)	R4S7ZGZ9CT

Computed Descriptors

Molecular Weight	240.28
XLogP3	2.8
Hydrogen Bond Donor Count	1
Hydrogen Bond Acceptor Count	4
Rotatable Bond Count	1
Exact Mass	240.05686342
Monoisotopic Mass	240.05686342
Topological Polar Surface Area	74.9
Heavy Atom Count	16
Formal Charge	0

Physical & Chemical Properties

Melting Point	139.7 °C
Melting Point	137-139 °C
Solubility	In water, 500 mg/L at 20 °C
Solubility	In water 570 mg/L (pH 7, 20 °C)
Density	1.41 at 20 °C
Vapor Pressure	0.00000345 [mmHg]
Vapor Pressure	4.05X10-8 mm Hg at 20 °C
LogP	log Kow = 2.34
LogP	-0.46
LogP	1.95

Physical description & handling notes

• Colorless to white solid; [ICSC]
• COLOURLESS-TO-WHITE CRYSTALLINE POWDER.
• Colorless crystals; tech. is an ochre-yellow solid [
• White, crystalline powder
• Odorless
• Decomposition temp: 200 °C

GHS Hazard Classification

Reported hazard statements	H302, H317, H319, H412 (99.2%), H334, H402

Documented Uses

• Used as a post-emergence herbicide with activity against a wide range of broadleaf weeds, as well as yellow nutsedge; [HSDB]
• A selective herbicide to control many broadleaf weeds and yellow nutsedge. A postemergence contact spray, so thorough coverage is essential.
• Bentazone can be made by reaction of methylanthralinate with isopropylsulfamoyl chloride.
• ... Made by the reaction of anthranilic acid with isopropylsulfamoyl chloride to give N-(isopropylsulfamoyl) anthranilic acid which is then cyclized with phosgene to give bentazon .
• Preparation: A. Zeidler et al., South Africa patent 6705164; eidem, United States of America patent 3708277 (1968, 1973 both to BASF).
• In the period 1970 to 1980, the US imported over 500 metric tons of bentazon.

Synonyms

Bentazone; bentazon; 25057-89-0; Basagran; Bendioxide; Leader; Basagran 480; Pentazone; Laddok; Pledge; Basagran M; Basagran KV; BAS 351H; DTXSID0023901; BAS 3510H; BAS 3512H

Frequently Asked Questions

What are the CAS number and molecular formula of Bentazon?

CAS 25057-89-0; molecular formula C10H12N2O3S; molecular weight — g/mol.

What other names is Bentazon known by?

Bentazone, bentazon, 25057-89-0, Basagran, Bendioxide, Leader.

Is Bentazon classified as hazardous?

Hazard statements reported: H302, H317, H319, H412, H334.

What are the key physical properties of Bentazon?

Melting Point: 139.7 °C; Melting Point: 137-139 °C; Solubility: In water, 500 mg/L at 20 °C; Solubility: In water 570 mg/L (pH 7, 20 °C).

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.