CAS No. 7758-29-4 Food Grade White Powder Sodium Tripolyphosphate STPP

• CAS No.: 7758-29-4
• Formula: Na5p3o10
• EINECS: 231-838-7
• Certification: ISO
• Purity: 90%~99%
• Grade Standard: Industrial Grade
• Product Name: Sodium Tripolyphosphate
• Classification: Phosphate
• Standard: Industrial Grade, Food Grade
• Shape: White Granular or Powder
• Appearance: White Powder
• Application: Used as Buffering Agent
• Solubility: Freely Soluble in Water, Insoluble in Ethanol
• Molecular Weight: 367.86
• Transport Package: 25kg/ Bag
• Trademark: Ruisite
• Origin: China

Product Description

Product Description

STPP is White powder or powder, apparent density 0.35-0.90g/cm3, melting point 622 ºC. soluble in water. The aqueous solution is alkaline, and the pH of 1% aqueous solution is 9.7. It is gradually hydrolyzed into phosphite in water and has a good ability to complex metal ions. It can complex with calcium, magnesium, iron and other metal ions to form soluble complexes. Can soften hard water. As an inorganic surfactant, it has the properties of a certain organic surfactant.

 

Specification

Name	Index	Test results
Na5P3O10	≥94%	96.3%
P2O5	≥57%	57.5%
Fe	≤0.015%	0.003%
Water insolubles	≤0.1%	0.048%
PH value(10g/L solution)	9.2-10	9.69
As(As Pb)	≤0.001%	0.001%
Fluoride(As F)	≤0.003%	0.0006%

Application

1.A Powerful Cleaning Agent:Sodium tripolyphosphate(Na5P3O10) is a strong cleaning ingredient that typically can rid dishes and fabrics of soil and spots. Its key function is that it allows surfactants to work at their full potential. Also, it prevents deposition of soil and acts as a pH buffer. It softens detergent water and can be used as a water treatment, as well. Many household cleaning products, including surface and toilet cleaners, contain STPP due to its cleaning component. Most chemical plants that make STPP list "detergents" as the primary area of use for this chemical.

2.Food Additive:The uses of STPP also include using it as a preservative. It can be used to preserve foods such as red meats, poultry, and seafood, helping them to retain their tenderness and moisture. Pet food and animal feed have been known to be treated with STPP, serving the same general purpose as it does in human food. STPP also has been used in helping to preserve the quality of drinks such as milk and fruit juices.

3.Other Uses:As a builder, sodium tripolyphosphate mainly is used in detergents and soaps. This includes dishwasher detergents as well as laundry detergents. It is used in most gel, liquid, tablet, and powder forms of each type of detergent. In the detergent, it helps strengthen the cleaning action.

It is used in paint as a pigment dispersant. Ceramics use it to help disperse clay, and paper mills use it as an oil-resistant agent when coating paper. It additionally has been used as a tanning agent in making leather, and the minerals in cement have been known to be treated with it. Sodium tripolyphosphate also has been used as an additive in toothpaste due to its cleaning action.