Sodium pyrophosphate decahydrate CAS 13472-36-1

Synonyms:
Molecular Formula: H7NaO8P2
Molecular Weight: 219.33
Hazard Class:
HS Code:
Grade:Food grade 98%
Industrial grade 98%

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Model:
13472-36-1
Brand:
bosschemical
Code:
13472-36-1

Product Description

What is of Sodium pyrophosphate decahydrate CAS 13472-36-1?

Sodium pyrophosphate decahydrate (also known as tetrasodium pyrophosphate decahydrate, Na₄P₂O₇ ⋅ 10H₂O) is a versatile, water-soluble inorganic salt primarily used as a buffering, thickening, and chelating agent. With a molecular weight of 446.06 g/mol, it acts as a mild water softener and food emulsifier.

Specification

project	metric
Sodium pyrophosphate monohydrate (Na₄P₂O₇10H₂O)w/%,(≥)	98.0
Anhydrous sodium pyrophosphate (Na₄P₂O₇),w/%
normal alkaline	Through experimentation
pH (in a 10 g/L solution)
Arsenic (As) / (mg/kg) ≤	3
Fluoride (expressed as F) / (mg/kg) ≤	50
Heavy metals (expressed as Pb) / (mg/kg) ≤	10
Lead (Pb) / (mg/kg) ≤	4
Water-insoluble substances,ω/% ≤	0.2
Burning reduction(Na₄P₂O₇):α,w/% ≤	0.5

technical grade

project	metric
surface	White powder
Main content (Na₄P₂O₇), w/% ≥	96.5
Water-insoluble substances, w/% ≤	0.15
pH value (10 g/L)	9.9～10.7
normal alkaliine	Through experimentation

Application Scenarios:

Daily Chemical Grade:

1. Daily Chemical Detergents and Personal Care: A highly cost-effective inorganic detergent builder (building agent).

2. "Stone Removal and Anti-scaling Agent" in High-End Toothpaste: Widely added to tartar removers and whitening toothpastes. It also gently emulsifies and disperses tobacco and tea stains on the tooth surface.

3. Solid Powder Detergents and Soap Modification: Used in the formulation of heavy-duty laundry detergents, industrial detergents, and synthetic soaps. During washing, it effectively softens hard water, effectively locking in calcium and magnesium ions to prevent secondary deposition of dirt on fabrics after combining with hard water. It also prevents the formation of a "soap scum" film on the soap surface.

Food Grade: Primarily used as a texture improver, emulsifier, water-retaining agent, and quality improver.

1. Highly Effective Water Retention for Meat Products and Seafood (Emulsifying Meat): Used in compound water-retaining agents for ham, sausages, meatballs, and frozen shrimp and fish paste. It can raise the pH value of meat and promote the dissociation of pyrophosphate in muscle fibers (dissociation of actomyosin), significantly enhancing the water-holding capacity of meat, making it more tender and juicy, and greatly reducing the loss of juices during cooking and thawing.

2. Instant Noodles and Starch Modification: In the production of instant noodles and udon noodles, it can improve the gelatinization of the dough, making the cooked noodles more elastic and glossy, and less prone to breaking or clouding the broth even after prolonged cooking.

Industrial Grade:

1. Pulp Bleaching and Color Stabilizer: In the paper industry, when hydrogen peroxide is used to bleach pulp, trace amounts of heavy metal ions such as iron and manganese in the pulp can catalyze the ineffective decomposition of hydrogen peroxide, leading to yellowing of the paper later. Adding sodium pyrophosphate decahydrate can chelate these harmful metals, protecting the bleaching agent and significantly increasing the whiteness of the paper.

2. Printing and Dyeing and Cotton Scouring Auxiliary Agent: In the textile industry, it is used as an alkaline buffer in printing and dyeing. During cotton scouring, it can remove pectin and wax from cotton fibers, resulting in more even dye application and brighter colors.

3. Clay dispersion and solvent: In the preparation of building ceramic slurries or drilling mud, it is an excellent dispersant (diluent), significantly reducing slurry viscosity and improving fluidity.