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Prometryn structure
Chemical Name:
Uvon;a1114;G34161;A 1114;CAPAROL;Polisin;GESAGARD;AGROGARD;EFMETRYN;Mercasin
Molecular Formula:
Formula Weight:
MOL File:

Prometryn Properties

Melting point:
Boiling point:
309.64°C (rough estimate)
refractive index 
1.5500 (estimate)
Flash point:
2 °C
storage temp. 
CAS DataBase Reference
7287-19-6(CAS DataBase Reference)
NIST Chemistry Reference
1,3,5-Triazine-2,4-diamine, N,N'-bis(1-methylethyl)-6-(methylthio)-(7287-19-6)
EPA Substance Registry System
1,3,5-Triazine-2, 4-diamine, N,N'-bis(1-methylethyl)- 6-(methylthio)-(7287-19-6)
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
Hazard Codes  F,Xn,N
Risk Statements  11-20/21/22-36-50/53-20
Safety Statements  16-26-36-61-60-36/37
RIDADR  UN 1648 3/PG 2
WGK Germany  2
RTECS  XY4390000
HS Code  29336990
Hazardous Substances Data 7287-19-6(Hazardous Substances Data)
Toxicity LD50 orally in rats: 3.75 g/kg (Geigy); LC50 (96 hour) in bluegill sunfish, rainbow trout (ppm): 10.0, 2.5 (Tweedy, Kahrs)
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H225 Highly Flammable liquid and vapour Flammable liquids Category 2 Danger P210,P233, P240, P241, P242, P243,P280, P303+ P361+P353, P370+P378,P403+P235, P501
H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P
H332 Harmful if inhaled Acute toxicity,inhalation Category 4 Warning P261, P271, P304+P340, P312
H400 Very toxic to aquatic life Hazardous to the aquatic environment, acute hazard Category 1 Warning P273, P391, P501
Precautionary statements:
P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P273 Avoid release to the environment.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

Prometryn price More Price(2)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 45636 Prometryn PESTANAL 7287-19-6 50mg $69.5 2018-11-20 Buy
Sigma-Aldrich N13103 Prometryn analytical standard 7287-19-6 1g $97.3 2018-11-20 Buy

Prometryn Chemical Properties,Uses,Production

Chemical Properties

Colorless crystalline solid.




Prometryn is a methylthiotriazine herbicide used for the control of several annual grasses and broadleaf weeds. Prometryn works by inhibiting the electron transport in target broadleaves and grasses.


Selective herbicide used to control many annual grasses and broad-leaved weeds in cotton, celery and peas.


ChEBI: A diamino-1,3,5-triazine that is N,N'-di(propan-2-yl)-1,3,5-triazine-2,4-diamine substituted by a methylsulfanediyl group at position 6.

General Description

Colorless crystals. Used as an herbicide.

Reactivity Profile

A triazine derivative. Amines are chemical bases. They neutralize acids to form salts plus water. These acid-base reactions are exothermic. The amount of heat that is evolved per mole of amine in a neutralization is largely independent of the strength of the amine as a base. Amines may be incompatible with isocyanates, halogenated organics, peroxides, phenols (acidic), epoxides, anhydrides, and acid halides. Flammable gaseous hydrogen is generated by amines in combination with strong reducing agents, such as hydrides.

Agricultural Uses

Herbicide: Prometryn is used to control several annual grasses and broadleaf weeds in terrestrial food and feed crops. Its major uses are on cotton and celery, and is often used on dill and pigeon peas. Not approved for use in EU countries. Registered for use in the U.S.

Trade name


Potential Exposure

Prometryn, a triazine herbicide, is used to control several annual grasses and broadleaf weeds in terrestrial food and feed crops. Among its major applica- tions are on cotton and celery and is often used on dill and pigeon peas.

Enzyme inhibitor

This selective post-emergence triazine herbicide (FW = 241.36 g/mol; CAS 7287-19-6; M.P. = 118-120°C), also known as Gesagard, Caparol, and systematically as N,N’-bis (1-methylethyl) -6-methylthio-1,3,5-triazine-2,4- diamine, is used to control annual grasses and broadleaf weeds in the cultivation of a variety of crops, including cotton and celery. Note: Prometryn is toxic to a number of organisms, including humans and fish, but is not toxic to birds, bees, and earthworms. Target (s) : electron transport, photosynthetic1

First aid

If this chemical gets into the eyes, remove any contact lenses at once and irrigate immediately for at least 15 minutes, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts the skin, remove contaminated clothing and wash immediately with soap and water. Seek medical attention immediately. If this chemical has been inhaled, remove from exposure, begin rescue breathing (using universal precautions) if breathing has stopped, and CPR if heart action has stopped. Transfer promptly to a medical facility. When this chemical has been swallowed, get medical attention. Give large quantities of water or milk and induce vomiting. Do not make an unconscious person vomit.

Environmental Fate

Soil. In soil and plants, the methylthio group is oxidized. The proposed degradative pathway is the formation of the corresponding sulfoxide and sulfone derivatives of prometryn followed by oxidation of the latter to forming hydroxypropazine (Kearney and Kaufman, 1976). Cook and Hütter (1982) reported that bacterial cultures degraded prometryne to form the corresponding hydroxy derivative (hydroxyprometryne). 14C-Prometryn was incubated in an organic soil for one year. It was observed that 57.4% of the bound residues were comprised of prometryn (>50%), hydroxypropazine, mono-n-dealkylated prometryn, mono-N-dealkylated hydroxypropazine, a didealkylated compound [2-(methylthio)-4-amino-6-(isopropylamino)-s-triazine] and unidentified methanol soluble products (Khan and Hamilton, 1980; Khan, 1982). Hydroxyprometryn and ammeline were reported as hydrolysis metabolites in soil (Somasundaram et al., 1991). The reported halflife in soil is 60 days (Jury et al., 1987).
Photolytic. When prometryn in aqueous solution was exposed to UV light for 3 hours, the herbicide was completely converted to hydroxypropazine. Irradiation of soil suspensions containing prometryn was found to be more resistant to photodecomposition. About 75% of the applied amount was converted to hydroxypropazine after 72 hours of exposure (Khan, 1982). The UV (λ = 253.7 nm) photolysis of prometryn in water, methanol, ethanol, n-butanol and benzene, yielded 2-methylthio-4,6-bis(isoprop-ylamino)-s-triazine. At wavelengths >300 nm, photodegradation was not observed (Pape and Zabik, 1970). Khan and Gamble (1983) also studied the UV irradiation (λ = 253.7 nm) of prometryn in distilled water and dissolved humic substances. In distilled water, 2-hydroxy-4,6-bis(isopropylamino)-s-triazine and 4,6-bis(isopropylamino)-s-triazine formed as major products.
In the presence of humic/fulvic acids, 4-amino-6-(isopropylamino)-s-triazine was also formed (Khan and Gamble, 1983). Pelizzetti et al. (1990) studied the aqueous photocatalytic degradation of prometryn and other s-triazines (ppb level) using simulated sunlight (λ >340 nm) and titanium dioxide as a photocatalyst. Prometryn rapidly degraded forming cyanuric acid, nitrates, sulfates, the intermediate tentatively identified as 2,4-diamino-6- hydroxy-N,N′-bis(1-methyl-ethyl)-1,3,5-triazine and other intermediate compounds similar to those found for atrazine. It was suggested that the appearance of sulfate ions was due to the attack of the methylthio group at the number two position. Mineralization of cyanuric acid to carbon dioxide was not observed (Pelizzetti et al., 1990).
Chemical/Physical. Mascolo et al. (1995) studied the reaction of prometryn (100 μM) with sodium hypochlorite (10 mM) at 25°C and pH 7. Degradation followed the following pathway: prometryn → 2,4-(N,N′-diisopropyl)diamino-6-methylsulfinyl-1,3,5-triazine → 2,4-(N,N′-diisopropyl)diamino-6-methylsulfonyl-1,3,5-triazine → 2,4-(N,N′-diisopropyl)diamino-6-methanesulfonate ester 1,3,5-triazine → 2,4-(N,N′-diisopropyl)diamino-6- hydroxy-1,3,5-triazine.


Triazine pesticides, solid, toxic, n.o.s. require a shipping label of “poisonous materials.” This material fall in DOT/UN Hazard Class 6.1.

Waste Disposal

Dissolve or mix the material with a combustible solvent and burn in a chemical incinera- tor equipped with an afterburner and scrubber. All federal, state, and local environmental regulations must be observed. In accordance with 40CFR165, follow recom- mendations for the disposal of pesticides and pesticide containers. Containers must be disposed of properly by following package label directions or by contacting your local or federal environmental control agency, or by contacting your regional EPA office.

Prometryn Preparation Products And Raw materials

Raw materials

Preparation Products

Prometryn Suppliers

Global( 114)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Mainchem Co., Ltd.
+86-0592-6210733 CHINA 32457 55
Hangzhou FandaChem Co.,Ltd.
0086 158 5814 5714 (Mobile; WhatsApp; Telegram)
+86-571-56059825 CHINA 2617 55
Shandong Zouping Xinlong Technology Co., Ltd. 0543-4260076 17705431882
0543-4260076 China 24 58
J & K SCIENTIFIC LTD. 400-666-7788 +86-10-82848833
+86-10-82849933; China 96815 76
GL Biochem (Shanghai) Ltd 86-21-61263452 (tel), 86-13641803416(mobile)
86-21-61263399 China 9718 64
Hangzhou Yuhao Chemical Technology Co., Ltd 0571-82693216
+86-571-82880190 China 9409 52
Spectrum Chemical Manufacturing Corp. 021-67601398,18616765336,QQ:3003443155
021-57711696 China 9692 60
Dalian Meilun Biotech Co., Ltd. 0411-66771943;0411-66771942
0411-66771945 China 4087 58
Chengdu Ai Keda Chemical Technology Co., Ltd. 4008-755-333 ; 028-86676798 ; 028-86757656
028-86757656 China 9760 55
9ding chemical ( Shanghai) Limited 4009209199
86-021-52271987 China 22550 55

Prometryn Spectrum

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