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Chloramben chemical structure, C7H5Cl2NO2, CAS 133-90-4
2D chemical structure

Key facts

What buyers check first

Appearance
Colorless crystalline solid
Melting point
200 to 201
Solubility
700 mg/l @ 25 °C
HS code
292249
Category
Herbicides
UN number
UN 3077
Illustrative photo, colourless crystals in small glass vials on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is Chloramben?

Plain description, key identifiers and synonyms

Chloramben is a chlorobenzoic acid.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
3-amino-2,5-dichlorobenzoic acid
CAS number
133-90-4 CAS number cross-checked
EC number
205-123-5
Molecular formula
C7H5Cl2NO2
UNII
EWG424FFB5
MDL number
MFCD00065093
InChIKey
HSSBORCLYSCBJR-UHFFFAOYSA-N
InChI
InChI=1S/C7H5Cl2NO2/c8-3-1-4(7(11)12)6(9)5(10)2-3/h1-2H,10H2,(H,11,12)
SMILES (canonical and isomeric)
C1=C(C=C(C(=C1C(=O)O)Cl)N)Cl

Synonyms

  • 3-Amino-2,5-dichlorobenzoic acid
  • Ambiben
  • Amiben DS
  • Amibin
  • Amoben
  • Vegiben
  • Amiben
  • Benzoic acid, 3-amino-2,5-dichloro-
  • Ornamental weeder
  • Chlorambed
  • 2,5-Dichloro-3-aminobenzoic acid
  • Ornamental weeder 4G
  • Chlorambene
  • Benzoic acid, 3-amino-2,5-dichloro
  • 3-amino-2,5-dichloro-benzoic acid
  • Kyselina 3-amino-2,5-dichlorbenzoova
  • Vegaben
  • Chloramben (Standard)
  • Chloramben:3-amino-2,5-dichlorobenzoic acid
  • 2,5-dichloro-3-amino-benzoic acid
  • 3-Amino-2,5-dichlorobenzoic acid, 95%
  • 3-azanyl-2,5-bis(chloranyl)benzoic acid
  • Chloramben, PESTANAL(R), analytical standard

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 crystalline solidexp.
Odour
ODORLESSexp.
Melting point
200 to 201exp.
Solubility
700 mg/l @ 25 °Cexp.
Vapour pressure
930 mPa @ 100 °Cexp.

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
206.03 g/molcalc.
Exact mass
204.9697 Dacalc.
LogP (octanol/water)
2.27calc.
Topological polar surface area
63.32 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
1calc.
Heavy atoms
12calc.
Rings
1calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0calc.
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, c1ccccc1

c1ccccc1

1 ring, 6 atoms, the Benzene ring system.

485,677 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

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

Hazard statements

  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
  • H350May cause cancer.
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.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • 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.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.
UN number
UN 3077

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

Chloramben suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 2 suppliers

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Where suppliers are based

2 suppliers in 2 countries

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Chloramben 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 for grasses & broadleaf weeds on soybeans, dry beans, lima beans, asparagus, pumpkins, squash, corn, tomatoes, peppers, sweet potatoes.

Preplant incorporated or pre-emergence weed control. Applied at planting of corn, dry beans, lima beans, peanuts, pumpkins, seedling asparagus, soybeans, squash, sunflowers, established tomatoes and peppers, cucumbers, cantaloupes, snapbeans, and sweet potatoes. Post emergence in soybeans.

Chloramben is used as a herbicide to control grasses and broadleaf weeds on soybeans, dry beans, lima beans, asparagus, pumpkins, squash, corn, tomatoes, peppers, and sweet potatoes.

Use classes: Herbicides.

How it is made

/It is made by/ chlorination of benzoic acid, followed by nitration & reduction.

Chloramben is synthesized from purified dinoben by reduction of nitro group.

Regulatory status

Inventories, regulations and trade controls that list this substance

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 Chloramben is traded under.

HS 2922.49Indicative HS code

Amino-acids, other than those containing more than one kind of oxygen function, and…

World exports in 2024
$3.88B
−11.5% vs 2023, imports $3.87B
2019 to 2024
Top exporters
  1. China38.7%
  2. India * partner reported8.3%
  3. Germany8.1%
Top importers
  1. United States13.4%
  2. Germany11.1%
  3. Japan6.6%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

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

What is Chloramben?

Chloramben is a chlorobenzoic acid.

What is the CAS number of Chloramben?

The CAS registry number of Chloramben is 133-90-4.

What is the molecular formula and weight of Chloramben?

The molecular formula of Chloramben is C7H5Cl2NO2 and its molar mass is 206.03 g/mol.

What is Chloramben used for?

Herbicide for grasses & broadleaf weeds on soybeans, dry beans, lima beans, asparagus, pumpkins, squash, corn, tomatoes, peppers, sweet potatoes. Preplant incorporated or pre-emergence weed control.

Is Chloramben hazardous?

Chloramben carries the GHS signal word "Danger". Main hazards: causes skin irritation, causes serious eye irritation, may cause respiratory irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Chloramben?

Chloramben is usually classified under HS code 292249 (Amino-acids, other than those containing more than one kind of oxygen function, and…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Chloramben?

CompoundList lists 2 suppliers of Chloramben in China and United States. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Chloramben?

Suppliers quote Chloramben 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 Chloramben

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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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