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。
2
As people's awareness of environmental protection increasing, developing and studying on new phosphate-free detergent builder to replace STPP has been an urgent and important task.
随着人们环保意识的提高，研究和开发取代三聚磷酸钠的新型无磷助洗剂成为一个迫切而重要的研究课题。
3
The behavior of DG phosphate-free builder comparison test with 4A-zeolites, STPP, SKS-6 etc. , and application in the laundry power are researched.