行业标准

WS/T 168-1999 作业场所空气中二苯基甲烷二异氰酸酯的盐萘乙二胺分光光度测定方法

Workplace air —Determination of diphenyl methane 4 4′-di-iso-cyanate-N-(1-naphthyl) ethylenediamine dihydrochloride spectrophotometric method

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