QB/T 4970-2016 in English
VALIDSurface active agents. Determination of anionic surfactant in raw materials and formulated products. Potentiometric titration method
- Issued on:2016-07-11
- Implemented on:2017-01-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
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本标准规定了测定表面活性剂原材料和按配方制造的产品中阴离子表面活性剂的电位滴定法。
本标准适用于分析阴离子表面活性剂。
若以质量分数表示分析结果时,则阴离子表面活性剂的平均相对分子质量已知或预先测定。
本标准不适用于有阳离子表面活性剂存在时的测定。
注1:尿素、乙二胺四乙酸盐和羧甲基纤维钠不干扰。
注2:存在非离子表面活性剂时,需视各特殊情况估计其影响。
注3:洗涤剂配方中的典型无机组分,如氯化钠、硫酸钠、硼酸钠、三聚磷酸钠、过硼酸钠、硅酸钠等不干扰,但过硼酸钠以外的漂白剂在分析前应予破坏,且样品应完全溶于水。
Scope
This standard specifies the potentiometric titration method for the determination of anionic surfactants in surfactant raw materials and products manufactured according to the formula. This standard is applicable to the analysis of anionic surfactants. See Appendix A for specific surfactant types. If the analysis results are expressed in terms of mass fraction, the average relative molecular mass of the anionic surfactant is known or predetermined. This standard does not apply to determinations in the presence of cationic surfactants.

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