ISO 3357-1975 工业用三聚磷酸钠和焦磷酸钠 氧化磷(V)总含量的测定 磷钼酸喹啉重量法

标准号：ISO 3357-1975
中文标准名称：工业用三聚磷酸钠和焦磷酸钠 氧化磷(V)总含量的测定 磷钼酸喹啉重量法
英文标准名称：Sodium tripolyphosphate and sodium pyrophosphate for industrial use; Determination of total phosphorus(V) oxide content; Quinoline phosphomolybdate gravimetric method
标准类型：G10
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：G10
国际标准分类号：71.060.50
适用范围：Based on hydrolysis of a test portion by prolonged boiling in the presence of hydrochloric acid. Precipitation of the phosphate ions in the form of quinoline phosphomolybdate in the presence of acetone. Filtration by means of a filter crucible, washing, drying and weighing of the precipitate.