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Herbicides

Bentazon

Also known as Bentazone, Basagran, Bendioxide

CAS 25057-89-0Formula C10H12N2O3SMolar mass 240.28 g/molEC 246-585-8
GHS signal word: Warning. Pictograms: Harmful or irritant, Serious health hazard 69 suppliers listed
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Bentazon chemical structure, C10H12N2O3S, CAS 25057-89-0
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Colorless crystals, tech. is an ochre-yellow solid [
Melting point
139.7 ยฐC
Density
1.41 at 20 ยฐC
Solubility
In water, 500 mg/L at 20 ยฐC
HS code
293499
Category
Herbicides
Illustrative photo, colourless crystals in an open woven sack in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Bentazon?

Plain description, key identifiers and synonyms

Bentazone is a benzothiadiazine that is 1H-2,1,3-benzothiadiazin-4(3H)-one 2,2-dioxide substituted by an isopropyl group at position 3. It has a role as a herbicide, a xenobiotic and an environmental contaminant.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2,2-dioxo-3-propan-2-yl-1H-2ฮป6,1,3-benzothiadiazin-4-one
CAS number
25057-89-0 CAS number cross-checked
EC number
246-585-8
Molecular formula
C10H12N2O3S
UNII
R4S7ZGZ9CT
MDL number
MFCD00078640
InChIKey
ZOMSMJKLGFBRBS-UHFFFAOYSA-N
InChI
InChI=1S/C10H12N2O3S/c1-7(2)12-10(13)8-5-3-4-6-9(8)11-16(12,14)15/h3-7,11H,1-2H3
SMILES (canonical and isomeric)
CC(C)N1C(=O)C2=CC=CC=C2NS1(=O)=O

Synonyms

  • Bentazone
  • Basagran
  • Bendioxide
  • Leader
  • Basagran 480
  • Pentazone
  • Laddok
  • Pledge
  • Basagran M
  • Basagran KV
  • BAS 351H
  • BAS 3510H
  • BAS 3512H
  • BAS 3517H
  • BAS 3510
  • BAS 351-07H
  • BAS 351-H
  • 3-isopropyl-1H-2,1,3-benzothiadiazin-4(3H)-one 2,2-dioxide
  • 3-Isopropyl-1H-2,1,3-benzothiadiazin-4(3H)-one-2,2-dioxide
  • 3-Isopropyl-2,1,3-benzothiadiazinon-(4)-2,2-dioxid
  • 3-(1-Methylethyl)-1H-2,1,3-benzothiadiazin-4(3H)-one 2,2-dioxide
  • 3-Isopropyl-4H-2,1,3-benzothiadiazin-4-one 2,2-dioxide
  • 3-isopropyl-2,2-dioxo-1H-2$l^{6},1,3-benzothiadiazin-4-one
  • 3-(propan-2-yl)-3,4-dihydro-1H-2lambda6,1,3-benzothiadiazine-2,2,4-trione
  • 3-isopropyl-2,2-dioxo-1H-2$l^(6),1,3-benzothiadiazin-4-one
Show all 32 synonyms
  • 1H-2,1,3-Benzothiadiazin-4(3H)-one, 3-(1-methylethyl)-, 2,2-dioxide
  • 1H-2,1,3-Benzothiadiazin-4(3H)-one, 3-isopropyl-, 2,2-dioxide
  • Basagran-plus
  • 3-isopropyl-1H-benzo[c][1,2,6]thiadiazin-4(3H)-one 2,2-dioxide
  • Adagio
  • 2,2-dioxo-3-propan-2-yl-1H-2lambda6,1,3-benzothiadiazin-4-one
  • 3-Isopropyl-1H-benzo-2,1,3-thiadiazin-4-one 2,2-dioxide

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Appearance
Colorless crystals, tech. is an ochre-yellow solid [exp.
Odour
Odorlessexp.
Melting point
139.7 ยฐCexp.
Density
1.41 at 20 ยฐCexp.
Solubility
In water, 500 mg/L at 20 ยฐCexp.
Vapour pressure
4.05 ร— 10โปโธ mm Hg at 20 ยฐCexp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
240.28 g/molcalc.
Exact mass
240.0569 Dacalc.
LogP (octanol/water)
1.21calc.
Topological polar surface area
66.48 ร…ยฒcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
1calc.
Heavy atoms
16calc.
Rings
2calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.3calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, O=C1NS(=O)(=O)Nc2ccccc21

O=C1NS(=O)(=O)Nc2ccccc21

2 rings, 13 atoms.

29 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant
GHS08: Serious health hazard
Serious health hazard

Hazard statements

  • H302Harmful if swallowed.
  • H317May cause an allergic skin reaction.
  • H319Causes serious eye irritation.
  • H361dSuspected of damaging the unborn child.
Precautionary statements (18)
  • P203Obtain, read and follow all safety instructions before use.
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P270Do not eat, drink or smoke when using this product.
  • P272Contaminated work clothing should not be allowed out of the workplace.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P317If swallowed: Get medical help.
  • P302 + P352If on skin: Wash with plenty of water.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P318If exposed or concerned, get medical advice.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P333 + P317If skin irritation or rash occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

Bentazon suppliers

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All 69 suppliers
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Where suppliers are based

69 suppliers in 12 countries

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Bentazon price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Herbicide.

A selective herbicide to control many broadleaf weeds and yellow nutsedge. A postemergence contact spray, so thorough coverage is essential.

Use classes: Herbicides, Pesticides, Pharmaceuticals.

Pharmacological actions

  • Herbicides

Roles

  • environmental contaminant
  • herbicide
  • pesticide
  • xenobiotic

Functional uses

  • Biocide

How it is made

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).

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 613-012-00-1

Health and food

  • EU Cosmetics Regulation Annex II, prohibited in cosmetics
    Name: Bentazone (ISO), 3-isopropyl-2,1,3-benzothiadiazine-4-one-2,2-dioxide, Ref no: 1724, Annex ref: II/1724

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Bentazon is traded under.

HS 2934.99Indicative HS code

Nucleic acids and their salts, other heterocyclic compounds, not elsewhere classified in heading 2934

World exports in 2024
$26.7B
+15.0% vs 2023, imports $26.3B
2019 to 2024
Top exporters
  1. Ireland26.3%
  2. China15.7%
  3. Singapore10.3%
Top importers
  1. United States24.5%
  2. Germany23.1%
  3. Japan4.5%
Reported customs values in USD, not prices.Full trade data

The HS code shown for Bentazon is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Bentazon, based on the data on this page

What is Bentazon?

Bentazone is a benzothiadiazine that is 1H-2,1,3-benzothiadiazin-4(3H)-one 2,2-dioxide substituted by an isopropyl group at position 3. It has a role as a herbicide, a xenobiotic and an environmental contaminant.

What is the CAS number of Bentazon?

The CAS registry number of Bentazon is 25057-89-0.

What is the molecular formula and weight of Bentazon?

The molecular formula of Bentazon is C10H12N2O3S and its molar mass is 240.28 g/mol.

What is Bentazon used for?

Herbicide. A selective herbicide to control many broadleaf weeds and yellow nutsedge. A postemergence contact spray, so thorough coverage is essential. Use classes: Herbicides, Pesticides, Pharmaceuticals.

Is Bentazon hazardous?

Bentazon carries the GHS signal word "Warning". Main hazards: harmful if swallowed, may cause an allergic skin reaction, causes serious eye irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Bentazon?

Bentazon is usually classified under HS code 293499 (Nucleic acids and their salts, whether or not chemically defined, other heterocyclicโ€ฆ). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Bentazon?

CompoundList lists 69 suppliers of Bentazon in China, Brazil, United States, Canada and 8 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Bentazon in India?

4 suppliers in India list Bentazon on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Bentazon?

Suppliers quote Bentazon on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Bentazon

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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