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Herbicides

Atrazine

Also known as Gesaprim, Aatrex, Atranex

CAS 1912-24-9Formula C8H14ClN5Molar mass 215.69 g/molEC 217-617-8
GHS signal word: Warning. Pictograms: Serious health hazard, Hazardous to the environment 266 suppliers listed
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Atrazine chemical structure, C8H14ClN5, CAS 1912-24-9
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Colorless powder
Melting point
177 ยฐC
Boiling point
205 ยฐC
Density
1.23 g/cmยณ at 22 ยฐC
Solubility
In water, 33.0 mg/L at 25 ยฐC
HS code
293369
Category
Herbicides
UN number
UN 2763
Illustrative photo, white powder in small glass vials on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is Atrazine?

Plain description, key identifiers and synonyms

Atrazine is a diamino-1,3,5-triazine that is 1,3,5-triazine-2,4-diamine substituted by a chloro group at position 6 while one of hydrogens of each amino group is replaced respectively by an ethyl and a propan-2-yl group. It has a role as a herbicide, a xenobiotic and an environmental contaminant. It is a chloro-1,3,5-triazine and a diamino-1,3,5-triazine. It is functionally related to a 6-chloro-1,3,5-triazine-2,4-diamine.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
6-chloro-4-N-ethyl-2-N-propan-2-yl-1,3,5-triazine-2,4-diamine
CAS number
1912-24-9 CAS number cross-checked
EC number
217-617-8
Molecular formula
C8H14ClN5
UNII
QJA9M5H4IM
MDL number
MFCD00041810
InChIKey
MXWJVTOOROXGIU-UHFFFAOYSA-N
InChI
InChI=1S/C8H14ClN5/c1-4-10-7-12-6(9)13-8(14-7)11-5(2)3/h5H,4H2,1-3H3,(H2,10,11,12,13,14)
SMILES (canonical and isomeric)
CCNC1=NC(=NC(=N1)Cl)NC(C)C

Synonyms

  • Gesaprim
  • Aatrex
  • Atranex
  • Atrazin
  • Oleogesaprim
  • Atazinax
  • Atrasine
  • Chromozin
  • Gesoprim
  • Hungazin
  • Primatol
  • Strazine
  • Aktikon
  • Argezin
  • Cyazin
  • Fenamin
  • Inakor
  • Pitezin
  • Primaze
  • Radazin
  • Vectal
  • Zeazin
  • Zeazine
  • Wonuk
  • Cekuzina-T
Show all 39 synonyms
  • Primatol A
  • Actinite PK
  • Aktinit A
  • Atratol A
  • Aktikon PK
  • Aktinit PK
  • Crisatrina
  • Crisazine
  • Weedex A
  • Akticon
  • Atrataf
  • Atratol
  • Fenamine
  • Griffex

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 powderexp.
Odour
Odorlessexp.
Melting point
177 ยฐCexp.
Boiling point
205 ยฐCexp.
Density
1.23 g/cmยณ at 22 ยฐCexp.
Solubility
In water, 33.0 mg/L at 25 ยฐCexp.
Vapour pressure
2.89 ร— 10โปโท mm Hg at 25 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
215.69 g/molcalc.
Exact mass
215.0938 Dacalc.
LogP (octanol/water)
1.78calc.
Topological polar surface area
62.73 ร…ยฒcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
5calc.
Rotatable bonds
4calc.
Heavy atoms
14calc.
Rings
1calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.63calc.
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, c1ncncn1

c1ncncn1

1 ring, 6 atoms, the 1,3,5-Triazine ring system.

1,908 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS08: Serious health hazard
Serious health hazard
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H317May cause an allergic skin reaction.
  • H373May cause damage to organs through prolonged or repeated exposure.
  • H400Very toxic to aquatic life.
  • H410Very toxic to aquatic life with long lasting effects.
Precautionary statements (12)
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P272Contaminated work clothing should not be allowed out of the workplace.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P333 + P317If skin irritation or rash occurs: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P391Collect spillage.
  • P501Dispose of contents and container in accordance with local regulations.
UN number
UN 2763

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

Atrazine suppliers

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All 266 suppliers
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Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

266 suppliers in 30 countries

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Atrazine 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

Selective herbicide.

Herbicide, plant growth regulator, and weed-control agent for corn, etc., and for noncrop and industrial sites.

Pre- and post-emergence control of annual broad-leaved weeds and annual grasses in maize, sorghum, sugar cane, pineapples, chemical fallow, grassland, macadamia nuts, conifers, industrial weed control. In Europe, use is concentrated in maize and sorghum. Used also in combinations with many other herbicides.

Use classes: Benzidines/Aromatic amines, Pesticides, Herbicides, Pesticides.

Pharmacological actions

  • Herbicides

Roles

  • environmental contaminant
  • herbicide
  • pesticide
  • xenobiotic

Functional uses

  • Biocide

How it is made

Atrazine is produced by reaction of cyanuric chloride with one equivalent of ethylamine, followed by treatment with one equivalent of isopropylamine.

Preparation: Gysin, Knusli, Switzerland patents 342784, 342785 (both 1960 to Geigy) ..., ... Andriska et al., Hungary patent 149189 (1962 to Nehezvegyipari Kutato Intezet ..., Mildner, France patent 1317812 (1963 to Radonja Kemijska Ind.)...

Reaction of 2,6-dichloro-4-ethylamino-s-triazine with isopropylamine

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 613-068-00-7

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 Atrazine is traded under.

HS 2933.69Indicative HS code

Compounds containing an unfused triazine ring (whether or not hydrogenated) in theโ€ฆ

World exports in 2024
$2.46B
+1.8% vs 2023, imports $2.44B
2019 to 2024
Top exporters
  1. China53.6%
  2. Germany11.5%
  3. India * partner reported8.4%
Top importers
  1. United States13.5%
  2. Brazil9.6%
  3. Germany9.5%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

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

What is Atrazine?

Atrazine is a diamino-1,3,5-triazine that is 1,3,5-triazine-2,4-diamine substituted by a chloro group at position 6 while one of hydrogens of each amino group is replaced respectively by an ethyl and a propan-2-yl group. It has a role as a herbicide, a xenobiotic and an environmental contaminant.

What is the CAS number of Atrazine?

The CAS registry number of Atrazine is 1912-24-9.

What is the molecular formula and weight of Atrazine?

The molecular formula of Atrazine is C8H14ClN5 and its molar mass is 215.69 g/mol.

What is Atrazine used for?

Selective herbicide. Herbicide, plant growth regulator, and weed-control agent for corn, etc., and for noncrop and industrial sites.

Is Atrazine hazardous?

Atrazine carries the GHS signal word "Warning". Main hazards: may cause an allergic skin reaction, may cause damage to organs through prolonged or repeated exposure, very toxic to aquatic life. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Atrazine?

Atrazine is usually classified under HS code 293369 (Compounds containing an unfused triazine ring (whether or not hydrogenated) in theโ€ฆ). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Atrazine?

CompoundList lists 266 suppliers of Atrazine in Brazil, China, United States, India and 26 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Atrazine in India?

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

What is the price of Atrazine?

Suppliers quote Atrazine 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 Atrazine

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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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