39475-55-3

Basic information

• Product Name: diethoxy-sulfanylidene-(3,5,6-trichloropyridin-2-yl)oxy-phosphorane
• Synonyms: diethoxy-sulfanylidene-(3,5,6-trichloropyridin-2-yl)oxy-phosphorane;Clorpyrifos(diethoxy-sulfanylidene-(3,5,6-trichloropyridin-2-yl)oxy-phosphorane)
• CAS NO: 39475-55-3
• Molecular Formula: C9H11Cl3NO3PS
• Molecular Weight: 350.586301
• Mol File: 39475-55-3.mol
• Article Data: 18

Chemical Properties

• Appearance: /
• CAS DataBase Reference: diethoxy-sulfanylidene-(3,5,6-trichloropyridin-2-yl)oxy-phosphorane(CAS DataBase Reference)
• NIST Chemistry Reference: diethoxy-sulfanylidene-(3,5,6-trichloropyridin-2-yl)oxy-phosphorane(39475-55-3)
• EPA Substance Registry System: diethoxy-sulfanylidene-(3,5,6-trichloropyridin-2-yl)oxy-phosphorane(39475-55-3)

Safety Data

• Hazardous Substances Data: 39475-55-3(Hazardous Substances Data)

Upstream product

• 2402-79-1 2,3,5,6-tetrachloropyridine 
• 25108-36-5 potassium picolinate 
• 2524-04-1 diethyl phosphorochloridothioate 

Downstream Products

• 6515-38-4 3,5,6-trichloropyridin-2 ol 
• 2465-65-8 O,O'-diethyl thiophosphoric acid 
• 5598-15-2 chlopyrifos oxon 
• 762-04-9 phosphonic acid diethyl ester 

Relevant articles and documents

Chlorpyrifos production method

Provided is a chlorpyrifos production method. Trichloro-acetic chloride is used as a starting raw material, an intermediate 3,3,5,6-tetrachloro-4,5-dihydropyridine-2(3H)-ketone is synthesized throughaddition and cyclization reaction, and then chlorpyrifos is synthesized through alkaline hydrolysis, condensation reaction and one-pot process reaction. The 3,5,6-trichloropyridine-2-sodium phenolatefiltering link after alkaline hydrolysis reaction is omitted, the chlorpyrifos is synthesized through a one-pot process, and operation steps are simplified. A dual-solvent method is adopted for condensation reaction, hydrolysis of O,O-diethyl thiophosphoryl chloride and generation of sulfotep can be effectively inhibited, the content of the synthesized chlorpyrifos product is 97% or above, and thetotal yield is 83% or above. Produced wastewater is greatly decreased, the total wastewater discharging amount is reduced by about 50% compared with an existing process, and the chlorpyrifos production method is suitable for industrial production.

Reinvestigation of phase-transfer-catalyzed chlorpyrifos synthesis

Production of chlorpyrifos via the phase-transfer-catalyzed reaction of 0,0-diethylphosphorochloridothioate and the sodium salt of 3,5,6- trichloropyridin-2-ol was reinvestigated. The formation of sulfotep (the major byproduct) and the yield are influence

Fungicidal active compound combinations

The present application relates to new active compound combinations composed, on the one hand, of prior art compounds metaconazole, 5-[(4-chlorophenyl)methyl]-2,2-dimethyl-1-(1H-1,2,4-triazol-1-yl-methyl)cyclopentanol and imidacloprid, 1-[(6-chloro-3-pyridinyl)-methyl]-4,5-dihydro-N-nitro-1H-imidazole-2-amine, and, on the other hand, of other prior-art active compounds, the combinations being extremely suitable for the protection of wood products.