Description

alpha,alpha’-Thiobis(2,6-di-tert-butyl-p-cresol) (CAS No. 1620-93-5) is a high-purity sterically hindered phenolic antioxidant with the molecular formula C₃₀H₄₆O₂S. This compound, also known by its IUPAC name 2,6-ditert-butyl-4-[(3,5-ditert-butyl-4-hydroxyphenyl)methylsulfanylmethyl]phenol, is widely utilized in polymer stabilization and industrial applications due to its excellent thermal and oxidative resistance. The thiobis(methylene) bridge enhances its efficacy as a radical scavenger, making it ideal for protecting synthetic rubbers, lubricants, and plastics from degradation. Available in crystalline or powder form, this antioxidant is characterized by its high melting point and low volatility, ensuring long-term performance in demanding environments. Suitable for research and industrial use, it is supplied with comprehensive analytical documentation including HPLC, GC, and NMR data.

Properties

• CAS Number: 1620-93-5
• Complexity: 513
• IUPAC Name: 2,6-ditert-butyl-4-[(3,5-ditert-butyl-4-hydroxy-phenyl)methylsulfanylmethyl]phenol
• InChI: InChI=1S/C30H46O2S/c1-27(2,3)21-13-19(14-22(25(21)31)28(4,5)6)17-33-18-20-15-23(29(7,8)9)26(32)24(16-20)30(10,11)12/h13-16,31-32H,17-18H2,1-12H3
• InChI Key: UDFARPRXWMDFQU-UHFFFAOYSA-N
• Exact Mass: 470.32185188
• Molecular Formula: C30H46O2S
• Molecular Weight: 470.8
• SMILES: CC(C)(C)C1=CC(=CC(=C1O)C(C)(C)C)CSCC2=CC(=C(C(=C2)C(C)(C)C)O)C(C)(C)C
• Topological: 65.8
• Monoisotopic Mass: 470.32185188
• Synonyms: 1620-93-5, alpha,alpha’-Thiobis(2,6-di-tert-butyl-p-cresol), Phenol, 4,4′-[thiobis(methylene)]bis[2,6-bis(1,1-dimethylethyl)-, 2,6-ditert-butyl-4-[(3,5-ditert-butyl-4-hydroxyphenyl)methylsulfanylmethyl]phenol, 2,6-di-tert-butyl-4-({[(3,5-di-tert-butyl-4-hydroxyphenyl)methyl]sulfanyl}methyl)phenol, 4,4′-(Thiobis(methylene))bis(2,6-di-tert-butylphenol), 2,6-Ditert-butyl-4-([(3,5-ditert-butyl-4-hydroxybenzyl)sulfanyl]methyl)phenol, EINECS 216-591-5, 2,6-ditert-butyl-4-{[(3,5-ditert-butyl-4-hydroxybenzyl)sulfanyl]methyl}phenol, bis-(3,5-di-tert-butyl-4-hydroxybenzyl)sulfide, SCHEMBL38964, DTXSID80167286, AKOS022181593, ST029260, NS00025295, di(3,5-di(t-butyl)-4-hydroxybenzyl) sulphide, di(3,5-di-tert-butyl-4-hydroxybenzyl) sulfide, Q65653331, 2,6-bis(tert-butyl)-4-({[3,5-bis(tert-butyl)-4-hydroxyphenyl]methylthio}methyl )phenol, 2,6-Ditert-butyl-4-([(3,5-ditert-butyl-4-hydroxybenzyl)sulfanyl]methyl)phenol #

Application

alpha,alpha’-Thiobis(2,6-di-tert-butyl-p-cresol) is primarily employed as an antioxidant in polymers such as polyethylene, polypropylene, and synthetic rubbers to prevent thermal and oxidative degradation. It is also used in lubricants and fuels to extend service life by inhibiting free radical formation. Its sterically hindered phenol structure makes it effective in high-temperature applications, including adhesives and coatings.

Safety and Hazards

GHS Hazard Statements

• H319 (100%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]

Precautionary Statements

• P264+P265, P280, P305+P351+P338, and P337+P317

Hazard Classes and Categories

• Eye Irrit. 2 (100%)

If you are interested or have any questions, please contact us at support@atomfair.com

Disclaimer: Sold exclusively for laboratory research. Prohibited for commercial use, diagnostics, or human/animal applications. Buyers assume all compliance liability.