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A polyphosphate is formed by a number of simple phosphate units linked together, and sodium tripolyphosphate contains three such units.

The brief manufacturing processes are as follows (1) :

STPP is commercially produced by the neutralization of phosphoric acid with sodium hydroxide to form the mixture of monosodium phosphate and disodium phosphate.
Then heat the mixture to 500-550 °C. Here is the reaction equation: NaH2PO4 + 2Na2HPO4 → Na5P3O10 + 2H2O
Food grade STPP exists as two forms, and follows the corresponding chemical formula:

STPP Anhydrous: Na5O10P3
STPP Hexahydrate: Na5O10P3 · 6H2O

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Sodium Acetate Anhydrous for the textile industry, waste and sulfuric acid, aniline dyes. When using Sodium Acetate Anhydrous photoresist it is also a chrome tanning agent impregnated, and Sodium Acetate Anhydrous help slow the production of chloroprene synthetic rubber vulcanization.
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It is a synthetic salt derived from acetic acid, although it occurs naturally in plant and animal tissues. The production of commercial food grade sodium acetate is mainly with the following two ways:

Neutralization acetic acid with sodium carbonate. Equation: CH3COOH + NaHCO3 → CH3COONa + H2O + CO2
Reaction calcium acetate with sodium sulfate and sodium bicarbonate. Equation: (CH3COO)2Ca + Na2SO4 → CH3COONa + CaSO4
Then follow the process of concentration, cooling and crystallization to obtain sodium acetate trihydrate.

Sodium acetate trihydrate (transparent crystalline powder or granular with a faint acetic odour) needs to be melted again to produce sodium acetate anhydrous (white hygroscopic powder or granular), and with the process such as centrifugation, drying and crystallization. (1)

Acetic acid will be obtained if hydrochloric acid is added to the sodium acetate solution. The following is the equation: CH3COONa + HCl = CH3COOH + NaCl

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Uses: Decreasing blood phosphate levels can help keep your bones strong, prevent unsafe buildup of minerals in your body, and possibly decrease the risk of heart disease and strokes that can result from high phosphate levels. Calcium acetate is a natural mineral that works by holding onto phosphate from the diet so that it can pass out of your body.

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It is a synthetic compound commonly produced by reaction acetic acid with calcium hydroxide (limestone) or calcium carbonate (hydrated lime).

The following are two manufacturing methods:

Neutralization acetic acid with calcium hydroxide. Equation: 2CH3COOH + Ca(OH)2/CaCO3 → (CH3COO)2Ca + 2H2O
An exothermic reaction between calcium oxide and glacial acetic acid. Equation: 2CH3COOH + CaO → (CH3COO)2Ca + H2O

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