三聚磷酸钠水解及滴定法测量其含量

Abstract

Abstract: Conditions of the hydrolysis of sodium tripolyphosphate dissolved in different concentrations of nitric acid and without acid at room temperature were studied，and the situation of the hydrolysis of sodium tripolyphosphate at 50 ℃ with different heating times was investigated.The results showed that the rate of hydrolysis of sodium tripolyphosphate accelerated when the pH of the solution was reduced and the temperature elevated，and the temperature was the major influence factor on the hydrolysis of sodium tripolyphosphate.At the same time，the content of sodium tripolyphosphate was determined by titration method.Sodium tripolyphosphate was almost totally hydrolyzed when the sample was boiled for 25 min，and the content of sodium tripolyphosphate was 99.31%.

Key words: sodium tripolyphosphate, hydrolysis, titration method, determination of content

CLC Number:

TQ131.12

WU Gui-Ling, ZHOU Jun-Hong, LU Yu-Lian, YOU Cai-Xia, SUN Cheng-Bin, XING , YAN , LIU Pin-Zhen. Hydrolysis and content measurement of sodium tripolyphosphate by titration method[J]. INORGANICCHEMICALSINDUSTRY, 2014, 46(2): 47-.

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National Inorganic Salts Information Center

Inorganic Acid-Base-Salt Committee of CIESC

Hydrolysis and content measurement of sodium tripolyphosphate by titration method

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