This document specifies the terms and definitions, molecular formula, structural formula, relative molecular mass, CAS number, technical requirements, test methods, and Inspection rules and marking, packaging, transportation and storage, etc. This document is applicable to the inspection of the hydrolysis stabilizer 2,2′,6,6′-tetraisopropyldiphenylcarbodiimide produced by the reaction of diisopropylaniline and carbon disulfide as the main raw materials.