38527-91-2

Usage

Uses

Different sources of media describe the Uses of 38527-91-2 differently. You can refer to the following data:
1. Agricultural chemical.
2. Etaphos is an organophosphorus pesticide.

Hazard

A poison by ingestion.

Safety Profile

A poison by ingestion. Low toxicity by inhalation. When heated to decomposition it emits toxic vapors of POx, SOx, and Cl-.

InChI:InChI=1/C11H15Cl2O3PS/c1-3-7-18-17(14,15-4-2)16-11-6-5-9(12)8-10(11)13/h5-6,8H,3-4,7H2,1-2H3

Upstream product

• 106-94-5 propyl bromide 
• 34643-46-4 prothiophos 
• 64-17-5 ethanol 

Downstream Products

• 23823-54-3 Thiophosphoric acid O-(2,4-dichloro-phenyl) ester S,O'-diethyl ester 

Relevant academic research and scientific papers

Photolysis, oxidation, and hydrolysis of 14C-ethyl prothiofos [O-(2, 4-dichlorophenyl) O-ethyl S-propyl phosphorodithioate]

The chemical stability of the widely used organophosphorus insecticide 14C-prothiofos was studied. For this study prothiofos insecticide and some of its degradation products have been prepared. The oxon of the parent compound was obtained through the oxidation of the insecticide with various oxidizing agents, where yields depended on the type and nature of oxidizing agent. The effect of ultraviolet light and direct sunlight on prothiofos were investigated. Exposure to direct sunlight caused gradual degradation of prothiofos giving the same products as UV irradiation.The hydrolysis of 14C-prothiofos at pH 5, 7, 8, and 9 in buffered aqueous media at 25C, 40C and 55C was studied. The results indicated that prothiofos was stable in acid medium, but it was hydrolyzed to 2,4-dichlorophenol and O-ethyl S-propyl phosphorodithioate in alkaline medium.The degradation products identified by TLC and GC/MS were prothiofos oxon, O-ethyl S-propyl phosphordithioate, des-propyl thioprothiofos, prothiofos oxon sulfoxide, and one unknown compound in addition to the parent compound. The phenolic compound was identified by GC/MS and by its color.Supplemental materials are available for this article. Go to the publisher's online edition of Phosphorus, Sulfur, and Silicon and the Related Elements to view the free supplemental file. Copyright Taylor & Francis Group, LLC.

Distribution and degradation of 14C-ethyl prothiofos in a potato plant and the effect of processing

Prothiofos and some of its degradation products have been synthesized in our laboratory for investigation purposes. The residual fate of 14C-ethyl prothiofos in different parts of potato plant was studied. The highest level of insecticide residues was detected in and on the leaves of potato plants. The residues of prothiofos insecticide were mainly located in the peels of potato tubers (peeling process removed 85% of the total residue after one month of the treatment), small amount penetrated into the pulp of potato tubers. The degradation products in the extracts of both peel and pulp of potato tubers were identified as prothiofos, prothiofos oxon, desethyl prothiofos, O-ethyl-S-propyl phosphorodithioate, O-ethyl phosphorothioate, O-ethyl-S-propyl phosphoric acid, O-ethyl phosphoric acid, despropylthio prothiofos, and prothiofos oxon sulfoxide. In addition 2,4-dichlorophenol was identified as such and in conjugated metabolites. Potatoes are processed in three ways: frying, boiling, and baking, which is simulated in home preparation. The amount of prothiofos residues was found to decrease on boiling (70%) and further on baking (82%) and frying (100%). The results indicated that frying process is the most effective method for reducing the amount of pesticide residues. Detectable residues were found in boiled potatoes (2.64 ppm), in the boiling water (0.24 ppm), and in the frying oil (0.71 ppm). From these results we concluded that the processed potatoes are safely used for human consumption. Copyright Taylor & Francis Group, LLC.

Biocidal macroemulsions containing polyvinyl alcohol

The present invention relates to new macroemulsions which contain 0.001 to 60 percent by weight of at least one active compound from the class comprising the phosphates and/or carbamates, 0 to 50 percent by weight of aromatic diluents, 0.001 to 20 percent by weight of polyvinyl alcohol having a mean molecular weight of between 5,000 and 150,000 and a content of acetate groups of between 2 and 30 mol %, and/or 0.001 to 20 percent by weight of a nonlphenol/propylene oxide/ethylene oxide adduct of the formula STR1 in which X represents integers from 10 to 50 and Y represents integers from 15 to 65, and/or 0.001 to 20 percent by weight of ethylene oxide/propylene oxide/ethylene oxide block copolymers having a mean molecular weight of between 2,000 and 8,000 and HLB values of between 8 and 30, and water and, if appropriate, additives, and in which the oil phase is dispersed in the aqueous phase in the form of droplets having a mean particle diameter of 0.1 to 3.0 μm.

O-ethyl-S-N-propyl-O-(substituted pheny)-phosphorothiolates

O-ethyl-S-n-propyl-O-(substituted phenyl)-phosphorothiolates of the general formula SPC1 Wherein X is halogen, lower alkyl, nitro, cyano, lower alkylmercapto, lower alkylsulfinyl, lower alkoxycarbonyl or lower alkyl carbonyl, and m is 1, 2 or 3, Which pos