BS 4427-6:1974-工业用三聚磷酸钠（三磷酸五钠）和焦磷酸钠（焦磷酸四钠）的试验方法-国家数字标准馆

现行 BS 4427-6:1974

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Methods of test for sodium tripolyphosphate (pentasodium triphosphate) and sodium pyrophosphate (tetrasodium pyrophosphate) for industrial use-Estimation of pyrophosphate content of sodium pyrophosphate 工业用三聚磷酸钠（三磷酸五钠）和焦磷酸钠（焦磷酸四钠）的试验方法

发布日期： 1974-06-07

将焦磷酸四钠转化为焦磷酸二氢二钠并释放硫酸沉淀焦磷酸后的电位滴定法。适用于含有至少90%焦磷酸四钠且不含更多浓缩形式磷酸盐的产品。交叉引用:BS 1792BS 2586BS 3145BS 3422BS 3978

Potentiometric method after conversion of the tetrasodium pyrophosphate to disodium dihydrogen pyrophosphate and precipitation of the pyrophosphate with liberation of sulphuric acid. Applicable to products containing at least 90 per cent of tetrasodium pyrophosphate and in the absence of more condensed forms of phosphate.Cross References:BS 1792BS 2586BS 3145BS 3422BS 3978

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发布单位或类别：英国-英国标准学会

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工业三聚磷酸钠试验方法
Test methods for industrial sodium tripolyphosphate

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