This standard specifies the requirements, test methods, inspection rules, marking, packaging and transportation of β-(3,5-di-tert-butyl-4-hydroxyphenyl) C-C alcohol ester of propionate (referred to as antioxidant 1135) and storage. This standard applies to antioxidant 1135 prepared from 2,6-di-tert-butylphenol as raw material, added to methyl acrylate and then transesterified with C to C alcohols. Chemical name: β-(3,5-di-tert-butyl-4-hydroxyphenyl) C-C alcohol ester of propionate Molecular formula: CHO Structural formula: Relative molecular mass: 376.57~404.62 (according to the 2007 international relative atomic mass)