2836. DBHBT

Nomenclature

CAS number: 63147-28-4
Mercaptoacetic acid [3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl]methyl ester; 3,5-di-tert-butyl-4-hydroxybenzylthioglycollate.
C17H26O3S; mol wt 310.45.
C 65.77%, H 8.44%, O 15.46%, S 10.33%.

Description and references

Thermal stabilizer. Prepn: K. S. Cottman, US 4020042 (1977 to Goodyear); and stabilization of acrylonitrile-butadiene-styrene (ABS) terpolymer: E. G. Kolawole, J. B. Adeniyi, Eur. Polym. J. 18, 469 (1982). Stabilization of polystyrene and poly(methyl methacylate): E. G. Kolawole, J. Appl. Polym. Sci. 27, 3437 (1982); of Nigerian natural rubber: G. C. Ebi, E. G. Kolawole, ibid. 45, 2239 (1992).

Chemical structure

Properties

White crystals from benzene, mp 107.5-108.5° (Cottman); also reported as mp 110° (Kolawole, Adeniyi).

Use

Antioxidant.