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

标准编号：ISO 3357:1975

中文名称：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

英文名称：Sodium tripolyphosphate and sodium pyrophosphate for industrial use — Determination of total phosphorus(V) oxide content — Quinoline phosphomolybdate gravimetric method

发布日期：1975-09

标准范围

基于在盐酸存在下通过延长煮沸对试验部分进行水解。在丙酮存在下以喹啉磷钼酸盐形式沉淀磷离子。通过过滤坩埚过滤，洗涤、干燥和称量沉淀物。

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.

标准预览图