NBN T 63-144-1988 7500 Surface active agents - Technical alkane sulfonates - Determination of alkane monosulfonates content by direct two-phase titration《表面活性剂 工业用链烷磺酸盐，链烷磺酸盐总含量的测定.pdf

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NBN T 63-128-1980 1250 Surface active agents - Analysis of technical alkane sulphonates - Deermination of alkane monosulphonates content《表面活性剂 链烷磺酸盐的技术分析 链烷磺酸盐含量的测定》.pdf

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