Product Name: Antioxidant 168
Synonyms: Antioxidant 168 (irgafos 168);Phenol,2,4-bis(1,1-dimethylethyl,phosphite(3:1);tri(2,4-Ditertrabutylphenyl)phosphiteester;Tris(2,4-di-tert-butylphenyl)phoshit;Doverphos-S-480;Phosphorous acid tri(2,4-di-tert-butylphenyl) ester;Phosphorous acid tris[2,4-bis(tert-butyl)phenyl] ester;Tris(2,4-di-tert-butylphenyloxy)phosphine
CAS: 31570-04-4
MF: C42H63O3P
MW: 646.92
EINECS: 250-709-6
Product Categories: organophosphorus compound;Polymer Additives;Polymer Science;Achiral Phosphine;Aryl Phosphine;Additives for Plastic;Organics;Polymer Additives;Polymer Science;Stabilizers
Mol File: 31570-04-4.mol

Antioxidant 168 Chemical Properties
Melting point  181-184 °C(lit.)
Boiling point  594.2±50.0 °C(Predicted)
density  -0.98
Fp  46°C (115°F)
form  Powder
color  white
Specific Gravity 0.98
Sensitive  moisture sensitive
Hydrolytic Sensitivity 4: no reaction with water under neutral conditions
InChIKey JKIJEFPNVSHHEI-UHFFFAOYSA-N
CAS DataBase Reference 31570-04-4(CAS DataBase Reference)
EPA Substance Registry System Tris(2,4-di-tert-butylphenyl) phosphite (31570-04-4)
Safety Information
WGK Germany  -
TSCA  Yes
HS Code  2920900002

Antioxidant 168 Usage And Synthesis
Characterization Antioxidant 168  is a hydrolytically stable phosphite processing stabilizer. As a secondary antioxidant,Antioxidant 168 reacts during processing with hydroperoxides formed by autoxidation of polymers preventing process induced degradation and extending the performance of primary antioxidants.
Reactions
Precursor to a palladacyclic catalyst for Suzuki, Stille and Heck processes.
Ligand for Pd-catalyzed [3+2] intramolecular cycloaddition of alk-5-enylidenecyclopropanes.
Ligand for Pt-catalyzed intramolecular silaboration of alkenes.
Ligand for Ni-catalyzed aminocarbonylation of aryl halides.
Ligand for the Au-catalyzed [4+2] intramolecular cycloaddition of allene-dienes.
Rhodium-Catalyzed Allylic Substitution with an Acyl Anion Equivalent. 

Product Name: Antioxidant 168
Synonyms: Antioxidant 168 (irgafos 168);Phenol,2,4-bis(1,1-dimethylethyl,phosphite(3:1);tri(2,4-Ditertrabutylphenyl)phosphiteester;Tris(2,4-di-tert-butylphenyl)phoshit;Doverphos-S-480;Phosphorous acid tri(2,4-di-tert-butylphenyl) ester;Phosphorous acid tris[2,4-bis(tert-butyl)phenyl] ester;Tris(2,4-di-tert-butylphenyloxy)phosphine
CAS: 31570-04-4
MF: C42H63O3P
MW: 646.92
EINECS: 250-709-6
Product Categories: organophosphorus compound;Polymer Additives;Polymer Science;Achiral Phosphine;Aryl Phosphine;Additives for Plastic;Organics;Polymer Additives;Polymer Science;Stabilizers
Mol File: 31570-04-4.mol

Antioxidant 168 Chemical Properties
Melting point  181-184 °C(lit.)
Boiling point  594.2±50.0 °C(Predicted)
density  -0.98
Fp  46°C (115°F)
form  Powder
color  white
Specific Gravity 0.98
Sensitive  moisture sensitive
Hydrolytic Sensitivity 4: no reaction with water under neutral conditions
InChIKey JKIJEFPNVSHHEI-UHFFFAOYSA-N
CAS DataBase Reference 31570-04-4(CAS DataBase Reference)
EPA Substance Registry System Tris(2,4-di-tert-butylphenyl) phosphite (31570-04-4)
Safety Information
WGK Germany  -
TSCA  Yes
HS Code  2920900002

Antioxidant 168 Usage And Synthesis
Characterization Antioxidant 168  is a hydrolytically stable phosphite processing stabilizer. As a secondary antioxidant,Antioxidant 168 reacts during processing with hydroperoxides formed by autoxidation of polymers preventing process induced degradation and extending the performance of primary antioxidants.
Reactions
Precursor to a palladacyclic catalyst for Suzuki, Stille and Heck processes.
Ligand for Pd-catalyzed [3+2] intramolecular cycloaddition of alk-5-enylidenecyclopropanes.
Ligand for Pt-catalyzed intramolecular silaboration of alkenes.
Ligand for Ni-catalyzed aminocarbonylation of aryl halides.
Ligand for the Au-catalyzed [4+2] intramolecular cycloaddition of allene-dienes.
Rhodium-Catalyzed Allylic Substitution with an Acyl Anion Equivalent.