工业用三氯化磷 正磷酸含量的测定 分光光度法
Phosphorus trichloride for industrial use-Determination of phosphoric acid content-spectrometric method
2008-04-23
HG/T 2775-2010
工业三氧化二铬
Chromium oxide for industrial use
2010-11-10
GB/T 1610-2024
工业铬酸酐
Chromium trioxide for industrial use
2024-09-29
HG/T 2678-2015
工业碱式硫酸铬
Basic chromium sulphate for industrial use
2015-07-29
GB/T 23943-2009
无机化工产品中六价铬含量测定的通用方法 二苯碳酰二肼分光光度法
Inorganic chemicals for industrial use - General method for the determination of chromium(Ⅵ) content - 1,5-diphenylcarbohydrazide spectrophotometric method
2009-06-02
BS 5688-14-1979
Methods of test for orthoboric acid (boric acid), diboron trioxide (boric oxide), disodium tetraborates, sodium perborates and crude sodium borates for industrial use-Determination of chromium content of boric acid, boric oxide and disodium tetraborates
工业用原硼酸、三氧化二硼、四硼酸二钠、过硼酸钠和粗硼酸钠的试验方法