ISO 7781:2017 苯乙烯-丁二烯生胶 天然皂和有机酸含量的测定
标准编号:ISO 7781:2017
中文名称:苯乙烯-丁二烯生胶 天然皂和有机酸含量的测定
英文名称:Styrene-butadiene rubber, raw — Determination of soap and organic-acid content
发布日期:2017-11
标准范围
ISO 7781:2017规定了三种测定生丁苯橡胶(SBR)中皂和有机酸含量的方法。-方法A是使用指示剂的滴定方法。-方法B是使用自动电位滴定仪的滴定方法。-方法C是使用自动电位滴定仪的反滴定法。由于橡胶中存在的皂和有机酸不是单一的化合物,因此该方法只能给出皂和有机物的近似值-酸含量。
ISO 7781:2017 specifies three methods for the determination of the soap and organic-acid content of raw styrene-butadiene rubber (SBR).
- Method A is the titration method using indicator reagent.
- Method B is the titration method using an automatic potentiometric titrator.
- Method C is the back titration method using an automatic potentiometric titrator.
Since the soaps and organic acids present in the rubber are not single chemical compounds, the method gives only an approximate value for the soap and organic-acid content.
标准预览图


