工业磷酸二氢钾标准新旧版本的比较和建议

Comparison and Suggestion of old and New Editions of Industrial Potassium Dihydrogen Phosphate Standards

文章对HG/T4511-2013工业磷酸二氢钾标准和HG2321-1992磷酸二氢钾标准中的工业级在内容上进行了比较,指出新旧版标准的主要差异,同时对新版标准提出了建议:对砷和氯化物指标增加数值定量分析方法;增加磷含量指标,同时根据磷和氧化钾含量共同折算磷酸二氢钾含量。

The HG/T4511-2013 industrial potassium dihydrogen phosphate standard and the industrial grade of HG2321-1992 potassium dihydrogen phosphate standard are compared in the content, the main differences between the old and new standards are pointed out and some suggestions on the new standard are put forward as follows : to increase the numerical and quantitative analysis method for arsenic and chloride indicators; and to increase the phosphorus content index, and calculate the potassium dihydrogen phosphate content according to the content of phosphorus and potassium oxide.