3819-72-5

Basic information

• Product Name: S,S,S-trioctyl trithiophosphate
• Synonyms: Octyl phosphorotrithioate; Phosphorotrithioic acid, S,S,S-trioctyl ester
• CAS NO: 3819-72-5
• Molecular Formula: C₂₄H₅₁OPS₃
• Molecular Weight: 482.8299
• Mol File: 3819-72-5.mol
• Article Data: 1

Chemical Properties

• Boiling Point: 558.1°C at 760 mmHg
• Flash Point: 291.3°C
• Density: 0.983g/cm³
• Vapor Pressure: 6.44E-12mmHg at 25°C
• Refractive Index: 1.499
• CAS DataBase Reference: S,S,S-trioctyl trithiophosphate(CAS DataBase Reference)
• NIST Chemistry Reference: S,S,S-trioctyl trithiophosphate(3819-72-5)
• EPA Substance Registry System: S,S,S-trioctyl trithiophosphate(3819-72-5)

Safety Data

• Hazardous Substances Data: 3819-72-5(Hazardous Substances Data)

Upstream product

• 1705-55-1 trithiophosphoric acid trioctyl ester 
• 80-15-9 Cumene hydroperoxide 

Relevant articles and documents

Organophosphorus Antioxidants. X. The Hydroperoxide Decomposing Action of Phosphites, Phosphonites and Thiophosphites

The kinetics and mechanism of reactions of phosphites, phosphonites, thiophosphites and hydrogenphosphites with cumyl (CHP), t-butyl (TBHP) and α-tetralyl (THP) hydrogenperoxides has been studied by means of (31)P-n.m.r. spectroscopy, high performance liquid chromatography and iodometric titration.All three valent phosphorus compounds studied initially react with hydroperoxides stoichiometrically to give the corresponding P=O products and alcohol.Some species are able to decompose cumyl hydroperoxide catalytically to form phenol and aceton.Acyloin phosphites decompose CHP catalytically after a stoichiometric reaction as thiophosphites do.Tetramethylpiperidinyl phosphites ("HALS-phosphites") react with hydroperoxides only stoichiometrically but with high velocity.Phosphonites react with hydroperoxides in the same way as the corresponding phosphites.Their reactivity, however, is much higher.Hydrogenphosphites are less reactive than phosphites in the reaction with hydroperoxides.They are able to act catalytically.