2524-03-0 Usage
Description
Dimethyl chlorothiophosphate is a colorless to light amber liquid that serves as a versatile chemical intermediate in the synthesis of various products.
Uses
Used in Chemical Industry:
Dimethyl chlorothiophosphate is used as a chemical intermediate for the production of insecticides, pesticides, and fungicides, due to its ability to enhance the effectiveness of these products in controlling pests and diseases.
Used in Oil and Gas Industry:
It is used as an additive in oil and gasoline to improve the performance and efficiency of these fuels, contributing to better engine operation and reduced emissions.
Used in Plastics Industry:
Dimethyl chlorothiophosphate is used as a plasticizer, which increases the flexibility and workability of plastic materials, making them more suitable for various applications.
Used in Corrosion Inhibition:
It serves as a corrosion inhibitor, protecting metal surfaces from degradation and extending the lifespan of equipment and structures in various industries.
Used in Flame Retardants:
Dimethyl chlorothiophosphate is used in the formulation of flame-retardant materials, which help to slow down the spread of fire and improve safety in various settings.
Used in Mining Industry:
It is used as a flotation agent in the mining industry, aiding in the separation of valuable minerals from waste materials, thus improving the efficiency of the mining process.
Preparation
Dimethyl chlorothiophosphate is prepared by reaction of phosphorus pentasulfide & methyl alcohol followed by reaction of the resulting dimethyl phosphorodithioate with chlorine.
Reactivity Profile
Organothiophosphates, such as Dimethyl chlorothiophosphate, 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.
Health Hazard
Dimethyl chlorothiophosphate is a strong irritant to the eyes, skin, and mucous membranes.
Fire Hazard
Dimethyl chlorothiophosphate may burn but does not ignite readily. Dimethyl chlorothiophosphate may ignite combustibles (wood, paper, oil, etc.). When heated Dimethyl chlorothiophosphate emits very toxic fumes of chlorine containing compounds, phosphorus oxides, and sulfur oxides.
Flammability and Explosibility
Nonflammable
Safety Profile
Poison by inhalation.
Moderately toxic by ingestion and skin
contact. Corrosive. When heated to
decomposition it emits very toxic fumes of
Cl-, POx, and SOx
Check Digit Verification of cas no
The CAS Registry Mumber 2524-03-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,5,2 and 4 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 2524-03:
(6*2)+(5*5)+(4*2)+(3*4)+(2*0)+(1*3)=60
60 % 10 = 0
So 2524-03-0 is a valid CAS Registry Number.
InChI:InChI=1/C2H6ClO2PS/c1-5-6(3,4)7-2/h1-2H3
2524-03-0Relevant articles and documents
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Lippman,A.E.
, p. 471 - 473 (1966)
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PROCESS FOR PREPARATION OF O, O-DIMEHYL PHOSPHORAMIDOTHIOATE AND N-(METHOXY-METHYLSULFANYLPHOSPHORYL) ACETAMIDE
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Paragraph 0032-0033, (2020/02/08)
Preparation of O,O-dimethyl phosphoramidothioate and O,O-dimethyl phosphoroamidothioate. A process of making O,O-dimethyl phosphoroamidothioate is described including reacting sulfur with PCl3 to form PSCl3, reacting the PSCl3 formed with methanol to form O-methyl phosphorodichloridothioate, and reacting the O-methyl phosphorodichloridothioate formed with methyl lye to form O,O-dimethyl phosphorochloridothioate in solution in CH2Cl2, and reacting the O,O-dimethyl phosphorochloridothioate formed with sodium hydroxide and ammonium hydroxide to form O,O-dimethyl phosphoroamidothioate in solution in CH2Cl2. Reacting the O,O-dimethyl phosphoroamidothioate formed with catalytic dimethyl sulfate to form methamidophos, and reacting the methamidophos formed with acetic anhydride to form N-(methoxy-methylsulfanylphosphoryl) acetamide is also described. Throughout the process, the O,O-dimethyl phosphorochloridothioate and the O,O-dimethyl phosphoroamidothioate formed are maintained in solution in CH2Cl2 at all times.
Synthesis method of O, O-dialkyl thiphosphoryl chloride
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Paragraph 0040; 0041; 0044-0047, (2018/08/28)
The invention discloses a synthesis method of O, O-diakyl thiphosphoryl chloride. In a reaction system where O, O-dialkyl S-hydro-phophorodithioate and chlorine are subjected to a chlorination reaction to prepare O, O-dialkyl thiphosphoryl chloride, an excess chlorine is introduced to make sulphur generated in the reaction be converted into disulfur dichloride, and disulfur dichloride is convertedinto sulfur dichloride afterwards; and by controlling the reaction temperature and arranging the reaction system to be in the negative pressure state, sulfur dichloride is moved out of the reaction system in the reaction process through distillation and condensing. The synthesis method substantially achieves the atomic economy based on a green chemistry concept; the overall cost of raw materialsis far lower than that in a traditional method, the amount of the three wastes is less, and the three wastes are easy to dispose; a traditional solid-liquid separation step is cancelled, automated production is facilitated, and meanwhile, improvement of the safety and environment production level of the device is facilitated; and O, O-dialkyl thiphosphoryl chloride is not in contact with water, disintegration of the product is avoided, the yield rate is as high as 93%, and the product content can reach 99%.