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4-Methyl-2,6-di-tert-butyl-phenyl-diphenylphosphat, also known as 4-methyl-2,6-bis(1,1-dimethylethyl)phenyl diphenyl phosphate, is an organophosphorus compound with the chemical formula C25H31O3P. It is a colorless to pale yellow liquid with a molecular weight of 410.49 g/mol. <4-Methyl-2,6-di-tert.-butyl-phenyl>-diphenylphosphat is characterized by its two phenyl groups attached to a central phosphorus atom, with a 4-methyl-2,6-di-tert-butyl-phenyl group as a substituent. It is used as a flame retardant, plasticizer, and stabilizer in various industrial applications, particularly in the production of plastics, rubber, and lubricants. Due to its chemical structure, it exhibits excellent thermal stability and resistance to oxidation, making it a valuable additive in materials that require protection against heat and fire.

1516-92-3

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1516-92-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1516-92-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,5,1 and 6 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1516-92:
(6*1)+(5*5)+(4*1)+(3*6)+(2*9)+(1*2)=73
73 % 10 = 3
So 1516-92-3 is a valid CAS Registry Number.

1516-92-3Downstream Products

1516-92-3Relevant academic research and scientific papers

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

Koenig, T.,Habicher, W. D.,Schwetlick, K.

, p. 913 - 922 (2007/10/02)

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.

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