Tetra Sodium Pyrophosphate
1. Basic Information
Alias: TSPP
Molecular formula: Na4P2O7
Molecular weight: 265.90
CAS no. : 7722-88-5
EINECS : 231-767-1
Customs Code: 28353990
2. Physicochemical Properties
Appearance : White powder or crystal
Relative density : 2.534g/cm
Melting point : 880 ºC
Boiling point : 938 ºC
Solubility : Soluble in water.
Specialty : The solubility of 100g water at 20ºC is 6.23, and its aqueous solution is alkaline.,insoluble in alcohol. Water solution is stable below 70ºC, and hydrolyzes to disodium hydrogen phosphate after boiling. In the weathering, the crystal loses its drying in air at 100 ºC, and easy to absorb moisture or deliquescence in the air.
Colorless or white crystalline or crystalline powder. Anhydrous is white powder, soluble in water, insoluble in ethanol and other metal ions. The complexing ability is strong. The aqueous solution is still stable below 70ºC. When it is boiled, it will be hydrolyzed to disodium hydrogen phosphate.
Technical index:
| Item |
Industrial grade indicators |
| Na4P2O7 |
Na4P2O7·10H2O |
| Main content,w/%≥ |
96.5 |
98.0 |
| Water insoluble matter,w%≤ |
0.15 |
0.10 |
| PH value |
9.9-10.7 |
| Orthophosphate |
PASS |
USE:
It is used in electroplating industry to prepare electroplating solution, which can form complex with iron. Wool industry is used as wool degreasing agent and bleaching agent. The paper industry is used for the bleaching of paper and plant fibers. Used in printing and dyeing industry as an auxiliary for printing and dyeing and fine bleaching. It is used as a toothpaste additive in the daily chemical industry. It can form a colloid with dicalcium phosphate and play a stabilizing role. It can also be used to synthesize detergents and produce shampoo and other products. Used as water softener in water treatment. Used as rust remover in mechanical processing. Used as dispersant and emulsifier in chemical production. It can also be used in water treatment machines, oil drilling, etc.
Packaging and transportation:
Packaging details:20kg/bag, 25kg/bag;According to Customer Requireme
port:Tianjin Port or Qingdao Port
Zhengzhou Yucai Phosphate Chemical Factory specializes in producing: sodium hexametaphosphate, sodium pyrophosphate, sodium tripolyphosphate, disodium hydrogen phosphate, trisodium phosphate, aluminum dihydrogen phosphate, solid aluminum dihydrogen phosphate, liquid aluminum dihydrogen phosphate,, Phosphate series products such as sodium dihydrogen phosphate have been continuously pursued and developed for more than thirty years. Relying on skilled chemical technology and product development, equipment update, and establishing good cooperation and sharing relations with many universities, in the chemical industry Played (Yucai phosphate) brand!
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