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
This document 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.
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