What are the dissolution conditions of sodium tripolyphosphate? The manufacturer tells you
Sodium tripolyphosphate is formed by neutralizing phosphoric acid with soda ash to form sodium orthophosphate, and then condensing it. Sodium tripolyphosphate is easily soluble in water, and its aqueous solution is alkaline. So, what are the dissolution conditions for sodium tripolyphosphate? The manufacturer tells you.
First, try to gradually heat the sodium tripolyphosphate solution. As the temperature increases, sodium tripolyphosphate will have stronger solubility. Generally, as the temperature of the dissolving environment increases, the water-insoluble sodium tripolyphosphate will gradually dissolve in the water and become clear.
Second, add stirring. Sodium tripolyphosphate is usually a mixture of type I and type II. Among them, Type I dissolves quickly in the process of dissolution heat, and is easy to produce small pieces. It is more convenient to dissolve when added under stirring, and it can also solve the problem of turbidity of the solution.
Third, if heating and stirring still do not meet the requirements. It is necessary to consider the purity and quality of the raw materials of sodium tripolyphosphate. Industrial grade sodium tripolyphosphate is widely used and relatively valuable. Some unscrupulous merchants can easily add low-value products such as sulphate powder and soda ash, or directly add other impurities to make it unable to dissolve properly. Some manufacturers only guarantee the main content of the production process, while other indicators can easily cause this result.
The sodium tripolyphosphate produced by Chuandong Chemical is produced by thermal process, with high purity, less impurities and more stable quality.