Introduce
Sodium pyrophosphate is an inorganic compound with the chemical formula Na4P2O7. It is a white crystalline powder that easily absorbs moisture in the air and deliquesces. It is soluble in water and insoluble in ethanol and other organic solvents. It has strong complexing ability with Cu 2+, Fe 3+, Mn 2+ and other metal ions. The aqueous solution is still stable below 70°C. It will be hydrolyzed into disodium hydrogen phosphate when boiled.
Specification
|
CAS |
7722-88-5 |
|
Appearance |
White powder |
|
Color |
White |
|
Melting point, °C |
80 °C(lit.) |
| Boiling point, °C | 93.8 °C °C760 mm Hg(lit.) |
Quality standard
| Indicator name | Standard | Result |
| Appearance | White powder | |
| Main content (calculated as Na4P2O7) %≥ | 96.5-100.5 | 97 |
| Phosphorus pentoxide (calculated as P2O5) %≥ | 51.5 | 51.5 |
| Orthophosphate | Qualified | Qualified |
| PH value (1% aqueous solution) | 9.9-10.7 | |
| Water-insoluble matter %≤ | 0.2 | 0.1 |
| Fineness (passes 60 mesh sieve) | 90 | 95 |
| Fluoride (calculated as F) %≤ | 0.005 | 0.002 |
| Heavy metals (calculated as Pb) %≤ | 0.001 | 0.0008 |
| Arsenic (calculated as As) %≤ | 0.0003 | 0.0003 |
| Lead %≤ | 0.0004 | 0.0002 |
| Weight loss on ignition %≤ | 0.5 | 0.5 |
Use:
It is used in the electroplating industry to prepare electroplating solutions and can form complexes with iron.
In wool spinning industry, it is used as wool degreasing agent and wool bleaching agent.
Used in the paper industry for bleaching paper and plant fibers.
In the printing and dyeing industry, it is used as an additive in printing, dyeing and fine bleaching.
In the daily chemical industry, it is used as a toothpaste additive. It can form a colloid with calcium hydrogen 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 a rust remover in machining.
Used as dispersant and emulsifier in chemical production. It can also be used in water treatment agents, oil drilling, etc., and as quality improvers, emulsifiers, buffers, chelating agents, etc. in the food industry.
In addition to the function of softening water, sodium pyrophosphate can also redissolve insoluble salts of calcium and magnesium. For example, in clothing fibers, dirt formed by mixed insoluble calcium soap or other metal soaps can be redissolved to improve decontamination. ability.
In addition, sodium pyrophosphate has anti-flocculation effect and emulsifies oil, which is called peptizing property. It can also further reduce the surface tension and interfacial tension of the surfactant solution and play a role in washing.
Package and transportation
Package:25kg/100kg
Transportation: by courier/ by air/ by sea
Related Articles
[HTML] Effect of tetrasodium pyrophosphate on the physicochemical properties of yogurt gels
T Ozcan, JA Lucey, DS Horne - Journal of dairy science, 2008 - Elsevier
The effect of tetrasodium pyrophosphate (TSPP) on the properties of yogurt gels was
investigated. Various concentrations (0.05 to 0.2%) of TSPP were added to preheated (85C for …
Hot Tags: cas 7722-88-5 |tetrasodium pyrophosphate, China cas 7722-88-5 |tetrasodium pyrophosphate manufacturers, factory, Benzoyl hydrazine, Acenaphthylene, Other Material Chemicals
