It was not appropriate for sodium sulfate, sodium chloride, sodium dihydrogen phosphate and disodium tetraborate decahydrate to be used as detergent builder.
硫酸钠、氯化钠、磷酸二氢钠和十水四硼酸二钠不适合用作洗涤剂的助洗剂。
Potassium dihydrogen phosphate was prepared by the reaction of ordinary superphosphate with potassium sulfate, and effecting factors were investigated.
研究了以普钙和硫酸钾为原料制备磷酸二氢钾的工艺条件。
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