7508-73-8

Basic information

• Product Name: Thiophosphoric acid O,O-bis(4-nitrophenyl)O-ethyl ester
• Synonyms: Bis-parathion;Thiophosphoric acid O,O-bis(4-nitrophenyl)O-ethyl ester;Thiophosphoric acid O-ethyl O,O-bis(p-nitrophenyl) ester
• CAS NO: 7508-73-8
• Molecular Formula: C₁₄H₁₃N₂O₇PS
• Molecular Weight: 0
• Mol File: 7508-73-8.mol
• Article Data: 3

Chemical Properties

• Boiling Point: 507.3°C at 760 mmHg
• Flash Point: 260.6°C
• Appearance: /
• Density: 1.475g/cm³
• Vapor Pressure: 6.53E-10mmHg at 25°C
• Refractive Index: 1.631
• CAS DataBase Reference: Thiophosphoric acid O,O-bis(4-nitrophenyl)O-ethyl ester(CAS DataBase Reference)
• NIST Chemistry Reference: Thiophosphoric acid O,O-bis(4-nitrophenyl)O-ethyl ester(7508-73-8)
• EPA Substance Registry System: Thiophosphoric acid O,O-bis(4-nitrophenyl)O-ethyl ester(7508-73-8)

Safety Data

• Hazardous Substances Data: 7508-73-8(Hazardous Substances Data)

Usage

InChI:InChI=1/C14H13N2O7PS/c1-2-21-24(25,22-13-7-3-11(4-8-13)15(17)18)23-14-9-5-12(6-10-14)16(19)20/h3-10H,2H2,1H3

Upstream product

• 1498-64-2 O-ethyl dichlorothiophosphate 
• 28341-54-0 4-(4-nitrophenoxy)butanoic acid 
• 141-52-6 sodium ethanolate 
• 100-02-7 4-nitro-phenol 
• 64-17-5 ethanol 
• 64131-85-7 O,O,O-tri(p-nitrophenyl) phosphorothioate 

Downstream Products

• 16604-76-5 thiophosphoric acid S-ethyl ester-O,O'-bis-(4-nitro-phenyl ester) 
• 109841-84-1 thiophosphoric acid O,O'-bis-(4-nitro-phenyl ester); (ethyl-trimethyl-ammonium)-salt 

Relevant articles and documents

Synthesis and QSAR of O,O-diaryl O-ethyl phosphorothionates for their fungicidal activity against Rhizoctonia solani and Sclerotium rolfsii

A series of twenty-one O,O-diaryl O-ethyl phosphorothionates having different substituents in the phenyl ring have been synthesized, characterized by various spectroscopic techniques and tested in vitro for fungicidal activity against Rhizoctonia solani and Sclerotium rolfsii. Among these, O,O-di(2,4-dimethylphenyl) O-ethyl phosphorothionates exhibit highest fungicidal activity (ED50 =0.066 mg mL-1, R. solani and 0.042 mg mL-1, S. rolfsii) The quantitative structure activity relationship (QSAR) obtained by means of multiple regression analysis technique using the fungicidal activity data and physico-chemical parameters of benzene ring substituents reveal that the size and shape of ortho-substituents expressed in terms of STERIMOL L and B1 parameters i.e, high value of length parameter, [ΣL(o)] and low value of width parameter, [ΣB1(o)] favour high fungicidal activity against both fungi.

Studies on chiral thiophosphoric acids and their derivatives 14. The asymmetric cyclization of (+)-cis-1,2,2-trimethyl-1,3-diaminocyclopentane with thiophosphorodichloridates and o-(4-nitrophenyl)thiophosphorochloridates

The cyclization of (+)-cis-1,2,2-trimethyl-1,3-diaminocyclopentane 1 with thiophosphorodichloridates 2 or O-(4-nitrophenyl)thiophosphorochloridates 4 forms (+)-2,4,5-diazaphosphabicyclo[3.2.1]octane 3 and 3′, respectively, but the stereoselectivity arising from the condensation of (+)-1 with 4 is less than that of (+)-1 with 2. The distinction between the two product distributions might be due to the significance of different mechanistic routes. In the light of a trigonal bipyramid (TBP) intermediate and Berry pseudorotation (BPR) concept their mechanism are discussed.