| Name | chlorinated sodium phosphate |
| Synonyms | Trisodium chlorophosphate sodium phasphate,chlorinated chlorinated sodium phosphate |
| Molecular Formula | Na3PO4·l/4NaOCI·12H2O |
| Physical and Chemical Properties | Chemical properties White needle-like or rod-like crystals, slightly chlorine flavor. Melting point 62 ℃, Ph value of aqueous solution 11.7. Soluble in water. It is stable at room temperature and easy to decompose when heated. In the aqueous solution, it can directly form insoluble phosphate crystals with calcium, magnesium and heavy metal ions to convert water and condense and settle insoluble substances in the water. |
| Use | Uses for tableware, food processing equipment cleaning and Disinfection, the purification of drinking water. |
use
1. It is used for disinfection of medical equipment, cleaning and disinfection of restaurants and household tableware, disinfection and cleaning of production equipment in food factories, purification of public water in baths and swimming pools, purification of drinking water, cleaning and disinfection of waste cotton fabrics, removal of ink stains, blood stains, sweat stains, tea stains, etc. Widely used in hospitals, food processing, milk factories, breweries, laundries and other industries.
2. Used for disinfection of medical equipment, cleaning and disinfection of restaurants and household tableware, disinfection and cleaning of food factory production equipment, etc.
production method
1. sodium hypochlorite method adds trisodium phosphate and sodium hypochlorite solution to a mixed dissolver, carries out mixing reaction at 90 ℃ for about 0.5h, adds some stabilizers (such as alkali metal fatty acid salt) at the same time, then carries out cooling crystallization and centrifugal separation below 30 ℃, and dries the crystallization below 35 ℃ to obtain trisodium chloride phosphate finished product. Its
4 Na3PO4?12H2O NaOCl & rarr; This product
chlorine gas method will be a certain ratio of phosphoric acid and sodium hydroxide solution for a period of neutralization reaction. At the same time, the chlorine gas is passed into the sodium hydroxide solution for chlorination reaction to generate sodium hypochlorite. Then the trisodium phosphate solution generated in the one-stage neutralization reaction and the sodium hypochlorite solution are subjected to a two-stage neutralization reaction, and the resulting liquid material is cooled and crystallized at a low temperature below 30°C, and centrifuged and separated, and the crystallization is at 35°C. The following is dried to produce a finished product of trisodium chloride phosphate. Its
H3PO4 3NaOH→Na3PO4 3H2O
2NaOH Cl2 & rarr;NaOCl x NaCl H2O
4 Na3PO4?12H2O NaOCl & rarr; This product
2. sodium hypochlorite method, trisodium phosphate and sodium hypochlorite solution are heated to 90 ℃ for 30min, alkali metal fatty acid salt stabilizer is added, and then cooled, crystallized, separated and dried at 30 ℃.
Chlorine gas method introduces chlorine gas into sodium hydroxide to generate sodium hypochlorite, and a certain amount of phosphoric acid is taken to neutralize sodium hydroxide to form trisodium phosphate, and then the two are mixed, neutralized, and cooled at 30 ℃, Crystallized, separated and dried.