BS 4427-6-1974 工业用三磷酸钠(三磷酸五钠)和焦磷酸钠(焦磷酸四钠)的试验方法.焦磷酸钠中焦磷酸盐含量评估

标准号：BS 4427-6-1974
中文标准名称：工业用三磷酸钠(三磷酸五钠)和焦磷酸钠(焦磷酸四钠)的试验方法.焦磷酸钠中焦磷酸盐含量评估
英文标准名称：Methods of test for sodium tripolyphosphate (pentasodium triphosphate) and sodium pyrophosphate (tetrasodium pyrophosphate) for industrial use - Estimation of pyrophosphate content of sodium pyrophosphate
标准类型：G12
发布日期：1974/6/7 12:00:00
实施日期：1974/6/7 12:00:00
中国标准分类号：G12
国际标准分类号：71.060.50
适用范围：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.