There are three purity measuring methods of vulcanizingaccelerator NOBS: potentiometric titration, indicator titration and liquid chromatography.
前言：硫化促进剂nobs纯度的测定方法有三种：电位滴定法、指示剂滴定法和液相色谱法。
2
Insoluble sulfur is a high performance vulcanizing agent of the rubber and vulcanizingaccelerator, which is mainly used to produce steel radial-ply tire.