ChemicalBook >> CAS DataBase List >>Pirimiphos-methyl


Chemical Name:
Blex;Sybol;PP511;sybol2;Silosan;Sybol 2;aktelik;Actelic;oms1424;ACTELLIC
Molecular Formula:
Molecular Weight:
MDL Number:
MOL File:
Last updated:2023-09-20 16:43:00

Pirimiphos-methyl Properties

Melting point 15°C
Boiling point 386.5±52.0 °C(Predicted)
Density d30 1.157
vapor pressure 1.5×10-2 Pa (30°C)
refractive index nD25 1.527
Flash point -18 °C
storage temp. APPROX 4°C
solubility Chloroform (Slightly), Ethyl Acetate (Slightly)
pka 3.71
Water Solubility 9.9 mg l-1 (30 °C, pH 5.2)
form Liquid
Viscosity 59.3mm2/s
Merck 13,7580
BRN 755726
LogP 4.2 at 20℃
CAS DataBase Reference 29232-93-7(CAS DataBase Reference)
EWG's Food Scores 1
NIST Chemistry Reference Pirimiphos methyl(29232-93-7)
Pesticides Freedom of Information Act (FOIA) Pirimiphos-methyl
EPA Substance Registry System Pirimiphos-methyl (29232-93-7)


Risk and Safety Statements

Symbol(GHS)  GHS hazard pictogramsGHS hazard pictogramsGHS hazard pictograms
Signal word  Danger
Hazard statements  H302-H370-H372-H410
Precautionary statements  P260-P264-P270-P273-P301+P312-P308+P311
Hazard Codes  Xn,N,F
Risk Statements  22-50/53-67-65-38-11
Safety Statements  60-61-62
RIDADR  UN3082 9/PG 3
WGK Germany  3
RTECS  TF1410000

Pirimiphos-methyl price More Price(6)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
TRC P508780 Pirimiphos-methyl,90% 29232-93-7 1g $145 2021-12-16 Buy
ChemScene CS-0013946 Pirimiphos-methyl 98.22% 29232-93-7 100mg $70 2021-12-16 Buy
ChemScene CS-0013946 Pirimiphos-methyl 98.22% 29232-93-7 250mg $100 2021-12-16 Buy
ChemScene CS-0013946 Pirimiphos-methyl 98.22% 29232-93-7 500mg $150 2021-12-16 Buy
Medical Isotopes, Inc. 42043 Pirimiphos-methyl,90% 29232-93-7 10g $875 2021-12-16 Buy
Product number Packaging Price Buy
P508780 1g $145 Buy
CS-0013946 100mg $70 Buy
CS-0013946 250mg $100 Buy
CS-0013946 500mg $150 Buy
42043 10g $875 Buy

Pirimiphos-methyl Chemical Properties,Uses,Production

Chemical Properties

Light yellow, straw colored, or amber oily liquid. Odorless when pure.


Pirimiphos-methyl is used to control a wide range of insect and mite pests in stored products and a wide range of insects and mites on agricultural crops, particularly sucking pests under glass.


Pirimiphos-methyl is a phosphorothioate used as an insecticide. Pirimiphos-methyl is commonly used for mosquito control as well as control of greenhouse crop pests and stored-product insects.


ChEBI: An organic thiophosphate that is O,O-dimethyl O-pyrimidin-4-yl phosphorothioate substituted by a methyl group at position 6 and a diethylamino group at position 2.

General Description

Yellow liquid. Corrosive to tin and mild steel. Used as an insecticide.

Air & Water Reactions

Hydrolyzed by strong acid or base.

Reactivity Profile

Organophosphates are susceptible to formation of highly toxic and flammable phosphine gas in the presence of strong reducing agents such as hydrides. Partial oxidation by oxidizing agents may result in the release of toxic phosphorus oxides.

Flammability and Explosibility

Not classified

Agricultural Uses

Insecticide, Acaricide: Pirimiphos-methyl is a post-harvest insecticide used to control a variety of insects in stored grain products and seed such as corn, rice, wheat and sorghum. It is also incorporated into cattle ear tags, and used for the fogging treatment of iris bulbs and pre-harvest clean up of fruits and vegetables.

Trade name


Safety Profile

Moderately toxic by ingestion. Mutation data reported. When heated to decomposition it emits very toxic fumes of NOx, POx, and SOx.

Potential Exposure

Pirimiphos-methyl is a post -harves organophosphate insecticide/acaricide used to control a variety of insects in stored grain products and seed such as corn, rice, wheat and sorghum. It is also incorporated into cattle ear tags, and used for the fogging treatment of iris bulbs and preharvest cleanup of fruits and vegetables.


When rats were given diets with 0, 10, 50, or 300 ppm pirimiphos methyl (equivalent to 0, 0.4, 2.1, or 12.6 mg/kg/day) for 2 years, 4 of the 42 high-dose male rats had pancreatic islet cell adenomas and 1 had a carcinoma compared to none in control male rats . In a carcinogenicity study, mice were given diets with 0, 50, 200, or 400/300 ppm pirimiphos methyl (equivalent to 0, 8.3, 33, or 52 mg/kg/day (males); 0, 9.7, 39, or 61 mg/kg/day (females)) for 78 weeks . The initial 400 ppm dose resulted in excessive toxicity and moribundity and was reduced to 300 ppm after 8 days. There was no evidence of carcinogenicity. In another mouse carcinogenicity study, pirimiphos methyl was administered in the diet at levels of 0, 5, 250, or 500 ppm (equivalent to 0, 0.5, 25.9, or 45.0 mg/kg/ day (males) and 0, 0.6, 27.6, or 50.6 mg/kg/day (females), respectively) for 80 weeks. The test diet for the highest dose groups initially contained 300 ppm of the test compound (the duration of treatment was not specified). The dose was then increased weekly by 50 ppm to 500 ppm. No evidence of carcinogenicity was observed.

Metabolic pathway

The metabolism of pirimiphos-methyl is similar in soils, plants and animals and can be represented by initial hydrolysis to yield 2-diethylamino- 6-methyl-p yrimidin-4-0l which may be either conjugated or successively N-de-ethylated. In plants, pirimiphos-methyl itself is N-de-ethylated. It is probable that the oxon form of the compound is formed in many systems but it is more labile than the parent compound and is often not detected. 0-Dealkylation, as with most organophosphates, is most probably a major detoxification route in mammals but the evidence for it in the case of pirimiphos-methyl is poor.


UN2783 Organophosphorus pesticides, solid, toxic, Hazard Class: 6.1; Labels: 6.1-Poisonous materials. UN3018 Organophosphorus pesticides, liquid, toxic, Hazard Class: 6.1; Labels: 6.1-Poisonous materials.


Pirimiphos-methyl is hydrolysed under both acidic and basic conditions and is most stable at pH 7 (PM). The main product of hydrolysis was the pyrimidinol (2). There is no information, however, on the degradation products formed under either acidic or basic conditions. The DT50 of degradation was in the range of 3-4 days in sterile deionised water in the dark. Photolysis was rapid but the products of photolytic breakdown were not described (PSD, 1997).


May react violently with antimony(V) pentafluoride. Incompatible with strong acids and alkalies, lead diacetate, magnesium, silver nitrate. In the presence of strong reducing agents such as hydrides, organophosphates form highly toxic and flammable phosphine gas. Contact with oxidizers can cause the release of toxic oxides of phosphorus.

Waste Disposal

Destruction by alkali hydrolysis or incineration. 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.

Synthesis of Pirimiphos-methyl from Dimethyl chlorothiophosphate and 2-DIETHYLAMINO-6-HYDROXY-4-METHYLPYRIMIDINE
Global( 179)Suppliers
Supplier Tel Email Country ProdList Advantage
Hebei Crovell Biotech Co Ltd
+86-19930503285 China 5986 58
Henan Bao Enluo International TradeCo.,LTD
+86-17331933971 +86-17331933971 China 2509 58
career henan chemical co
+86-0371-86658258 China 29920 58
Hubei Jusheng Technology Co.,Ltd.
18871490254 CHINA 28181 58
Hubei xin bonus chemical co. LTD
86-13657291602 CHINA 22970 58
Shandong chuangyingchemical Co., Ltd.
18853181302 CHINA 5910 58
Chongqing Chemdad Co., Ltd
+86-023-61398051 +8613650506873 China 39917 58
+8618523575427 China 47425 58
Shaanxi Dideu Medichem Co. Ltd
+86-29-87569266 15319487004 China 4009 58
+86-13806087780 China 17368 58

View Lastest Price from Pirimiphos-methyl manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
Pirimiphos-methyl pictures 2023-12-01 Pirimiphos-methyl
US $2.80 / ml 10000ml 99.99% 100Tons Hebei Dangtong Import and export Co LTD
Pirimiphos-methyl pictures 2023-09-12 Pirimiphos-methyl
US $100.00-50.00 / KG 1KG 99% 10000kg Hebei Crovell Biotech Co Ltd
Pirimiphos-methyl pictures 2023-07-29 Pirimiphos-methyl
US $10.00 / kg 1kg 99.99% 50000tons Henan Bao Enluo International TradeCo.,LTD
  • Pirimiphos-methyl pictures
  • Pirimiphos-methyl
  • US $2.80 / ml
  • 99.99%
  • Hebei Dangtong Import and export Co LTD
  • Pirimiphos-methyl pictures
  • Pirimiphos-methyl
  • US $10.00 / kg
  • 99.99%
  • Henan Bao Enluo International TradeCo.,LTD

Pirimiphos-methyl Spectrum

pyridiminephosphate pyrimiphosmethyl Pyrimiphos-methyl Silosan Sybol Sybol 2 sybol2 Dimethyl O-(2-(diethylamino)-6-methyl-4-pyrimidinyl)phosphorothioate Plant Protection Pyrimidinol, 2-(diethylamino)-6-methyl-, O-ester with O,O-dimethyl phosphorothioate PIRIMIPHOS-METHYL, 250MG, NEAT PIRIMIPHOS-METHYL PESTANAL, 250 MG ACTELLIC ACTELLIC(R) ACTELLIFOG O-(2-Diethylamino-6-methyl-4-pyrimidinyl)-O,O-dimethyl phosphorothioate Pyridimine phosphate ent27699gc ENT 27699Gc Blex aktellik aktelik Actelic 2-diethylamino-6-methylpyrimidin-4-yldimethylphosphorothionate 2-Diethylamino-6-methylpyrimidin-4-yl dimethyl phosphorothionate O,O-dimethyl-O-(2-diethylamino-6-methyl-primidin-4-yl) phosphorothioate Acellifog pirimiphos-methyl (ISO) O-(2-diethylamino-6-methylpyrimidin-4-yl) O,O-dimethyl phosphorothioate Pirimiphos-methyl Solution, 100ppm PiriMifos Metil 90 % Pirimiphos-methyl 250mg [29232-93-7] Poromophos-methyl Thiophosphoric acid=O,O-dimethyl=O-[2-(diethylamino)-6-methyl-4-pyrimidinyl] ester Phosphorothioic acid O-[2-(diethylamino)-6-methylpyrimidin-4-yl] O,O-dimethyl O-[2-(DIETHYLAMINO)-6-METHYL-4-PYRIMIDINYL],O-DIMETHYLPHOSPHOROTHIOATE PiriMiphos-Methyl Standard plantprotectionpp511 Plant Protection PP511 Pirimiphos Me Pirimifosmethyl phosphorothioicacid,o-(2-(diethylamino)-6-methyl-4-pyrimidinyl)o,o-dimethyl Phosphorothioic acid, O-[2-(diethylamino)-6-methyl-4-pyrimidinyl] O,O-dimethyl ester oms1424 OMS 1424 o-[2-(Diethylamino)-6-methyl-4-pyrimidinyl] o,o-dimethyl thiophosphate o-(2-diethylamino-6-methylpyrimidin-4-yl)o,o-dimethylphosphorothioate O-(2-Diethylamino-6-methylpyrimidin-4-yl) O,O-dimethyl phosphorothioate Methylpyrimiphos Methylpirimiphos Fumite pirimiphos-methyl smoke fosforanpirimidyny O-2-DIETHYLAMINO-6-METHYLPYRIMIDINE-4-YL O,O-DIMETHYL PHOSPHOROTHIOATE PIRIMPHOS-METHYL ESTER PIRIMIPHOS-METHYL PP511 O,O-DIMETHYL-O-[2-(DIETHYLAMINO)-6-METHYL-4-PYRIMIDINYL]PHOSPHOROTHIOATE pirimiphos-methyl (bsi,iso,ansi,ban,esa) pirimiphos-methyl solution