This standard specifies two methods for the determination of soap and organic acid content in styrene-butadiene raw rubber: method A is the indicator method, and method B is the automatic potentiometric titration method. This standard applies to emulsion-polymerized styrene-butadiene raw rubber. For styrene-butadiene raw rubber using aromatic extender oil and (or) p-phenylenediamine antioxidant, method B should be used.
GB/T 8657-2014 Referenced Document
GB/T 15340 Rubber,raw natural and raw synthetic.Sampling and further preparative procedures
GB/T 601 Chemical reagent.Preparations of reference titration solutions*, 2016-10-13 Update
GB/T 8657-2014 history
2014GB/T 8657-2014 Styrene-butadiene rubber, raw.Determination of soap and organic-acid content
2000GB/T 8657-2000 Rubber,raw styrene-butadiene-Determination of soap and organic-acid content