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Herbicides

Ametryn

Also known as Ametryne, Gesapax, Ametrex

CAS 834-12-8Formula C9H17N5SMolar mass 227.34 g/molEC 212-634-7
GHS signal word: Warning. Pictograms: Harmful or irritant, Hazardous to the environment 90 suppliers listed
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Ametryn chemical structure, C9H17N5S, CAS 834-12-8
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
White powder
Melting point
83.6 ยฐC
Boiling point
337 ยฐC
Density
1.18 at 22 ยฐC
Solubility
In water, 209 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 Ametryn?

Plain description, key identifiers and synonyms

Ametryn is a methylthio-1,3,5-triazine that is 2-(methylsulfanyl)-1,3,5-triazine substituted by an ethylamino and an isopropylamino group at positions 4 and 6 respectively. It has a role as a herbicide and an environmental contaminant. It is a diamino-1,3,5-triazine and a methylthio-1,3,5-triazine.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
4-N-ethyl-6-methylsulfanyl-2-N-propan-2-yl-1,3,5-triazine-2,4-diamine
CAS number
834-12-8 CAS number cross-checked
EC number
212-634-7
Molecular formula
C9H17N5S
UNII
1SPQ95183Y
MDL number
MFCD00055398
InChIKey
RQVYBGPQFYCBGX-UHFFFAOYSA-N
InChI
InChI=1S/C9H17N5S/c1-5-10-7-12-8(11-6(2)3)14-9(13-7)15-4/h6H,5H2,1-4H3,(H2,10,11,12,13,14)
SMILES (canonical and isomeric)
CCNC1=NC(=NC(=N1)SC)NC(C)C

Synonyms

  • Ametryne
  • Gesapax
  • Ametrex
  • Evik
  • Cemerin
  • Ametrine
  • Crisatrine
  • Amephyt
  • Doruplant
  • Primatol Z 80
  • Trinatox D
  • Gardopax
  • Geshpax
  • Gestene
  • Topazol
  • 2-Ethylamino-4-isopropylamino-6-methylmercapto-s-triazine
  • 2-Ethylamino-4-isopropylamino-6-methylthio-1,3,5-triazine
  • 1,3,5-Triazine-2,4-diamine, N-ethyl-N'-(1-methylethyl)-6-(methylthio)-
  • 2-Methylthio-4-ethylamino-6-isopropylamino-S-triazine
  • 2-(Ethylamino)-4-(isopropylamino)-6-(methylthio)-s-triazine
  • N-Ethyl-N'-(1-methylethyl)-6-(methylthio)-1,3,5-triazine-2,4-diamine
  • 2-Methylmercapto-4-ethylamino-6-isopropylamino-S-triazine
  • 2-(Methylthio)-4-(ethylamino)-6-(isopropylamino)-s-triazine
  • N-ethyl-6-(methylsulfanyl)-N'-(propan-2-yl)-1,3,5-triazine-2,4-diamine
  • 2-Methylmercapto-4-isopropylamino-6-ethylamino-S-triazine
Show all 38 synonyms
  • N-Ethyl-N-isopropyl-6-methylthio-1,3,5-triazine-2,4-diamine
  • N-ethyl-N'-(1-methylethyl)-6-(methylthio)-2,4-diaminetriazine
  • N-ethyl-N'-isopropyl-6-(methylthio)-1,3,5-triazine-2,4-diamine
  • s-Triazine, 2-ethylamino-4-isopropylamino-6-methylthio-
  • N2-ethyl-6-(methylsulfanyl)-N4-(propan-2-yl)-1,3,5-triazine-2,4-diamine
  • N2-Ethyl-N4-isopropyl-6-(methylthio)-1,3,5-triazine-2,4-diamine
  • 2-Ethylamino-4-isopropylamino-6-methylthio-s-triazine
  • 4-N-ethyl-6-methylsulfanyl-2-N-propan-2-yl-1,3,5-triazine-2,4-diamine
  • A 1093, Amephyt, Ametrex, Ametryne
  • s-Triazine, 2-(ethylamino)-4-(isopropylamino)-6-(methylthio)-
  • Ametryn, analytical standard
  • 2-(Ethylamino)-4-(isopropylamino)-6-(methylmercapto)-s-triazine
  • 2-(Methylmercapto)-4-(ethylamino)-6-(isopropylamino)-s-triazine

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
White powderexp.
Melting point
83.6 ยฐCexp.
Boiling point
337 ยฐCexp.
Density
1.18 at 22 ยฐCexp.
Solubility
In water, 209 mg/L at 25 ยฐCexp.
Vapour pressure
VP: 8.4 ร— 10โปโท 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
227.34 g/molcalc.
Exact mass
227.1205 Dacalc.
LogP (octanol/water)
1.85calc.
Topological polar surface area
62.73 ร…ยฒcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
6calc.
Rotatable bonds
5calc.
Heavy atoms
15calc.
Rings
1calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.67calc.
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
GHS07: Harmful or irritant
Harmful or irritant
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H302Harmful if swallowed.
  • H400Very toxic to aquatic life.
  • H410Very toxic to aquatic life with long lasting effects.
Precautionary statements (7)
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P273Avoid release to the environment.
  • P301 + P317If swallowed: Get medical help.
  • P330Rinse mouth.
  • 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

Ametryn suppliers

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All 90 suppliers
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Where suppliers are based

90 suppliers in 12 countries

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Ametryn 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

A selective, contact herbicide with some soil residual activity. Postemergence treatments must be directed on most crops. Absorbed through foliage and roots, penetrates foliage rapidly, minimizing its removal by rain.

Pre-emergence and post-emergence herbicides.

Use classes: Herbicides, Pesticides.

Pharmacological actions

  • Herbicides

Roles

  • environmental contaminant
  • herbicide
  • pesticide

Functional uses

  • Biocide

How it is made

Ametryn is produced by reaction of atrazine with methyl mercaptan in the presence of sodium hydroxide.

Ametryn is ... synthesized ... by reacting 2-mercapto-4-ethylamino-6-isopropylamino-1,3,5-triazine with a methylating agent in the presence of NaOH.

Preparation: Gysin, Knuesli, Switzerland patent 337019, Rufener et al., United States of America patent 3558622 (1959, 1971 both Geigy).

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 613-010-00-0

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Ametryn 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 Ametryn is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is Ametryn?

Ametryn is a methylthio-1,3,5-triazine that is 2-(methylsulfanyl)-1,3,5-triazine substituted by an ethylamino and an isopropylamino group at positions 4 and 6 respectively. It has a role as a herbicide and an environmental contaminant. It is a diamino-1,3,5-triazine and a methylthio-1,3,5-triazine.

What is the CAS number of Ametryn?

The CAS registry number of Ametryn is 834-12-8.

What is the molecular formula and weight of Ametryn?

The molecular formula of Ametryn is C9H17N5S and its molar mass is 227.34 g/mol.

What is Ametryn used for?

A selective, contact herbicide with some soil residual activity. Postemergence treatments must be directed on most crops. Absorbed through foliage and roots, penetrates foliage rapidly, minimizing its removal by rain. Pre-emergence and post-emergence herbicides. Use classes: Herbicides, Pesticides.

Is Ametryn hazardous?

Ametryn carries the GHS signal word "Warning". Main hazards: harmful if swallowed, very toxic to aquatic life, very toxic to aquatic life with long lasting effects. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Ametryn?

Ametryn 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 Ametryn?

CompoundList lists 90 suppliers of Ametryn in Brazil, China, India, Colombia 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 Ametryn in India?

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

What is the price of Ametryn?

Suppliers quote Ametryn 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 Ametryn

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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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