ISO 3706-1976 工业(包括食品)用磷酸 氧化磷(V)总含量的测定 磷钼酸喹啉重量法

标准号：ISO 3706-1976
中文标准名称：工业(包括食品)用磷酸 氧化磷(V)总含量的测定 磷钼酸喹啉重量法
英文标准名称：Phosphoric acid for industrial use (including foodstuffs); 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：71.060.30
适用范围：Applicable to products whether or not they are homogeneous and whether or not they contain polyphosphoric acids. Specifies preliminary hydrolysis of the polyphosphoric acids by boiling in the presence of hydrochloric acid. The precipitation of the phosphoric acid is carried out in the form of quinoline phosphomolybdate in the presence of acetone. Filtration by a filter crucible, washing, drying and weighing of the precipitate.