Description

Sodium Pyrophosphate (CAS NO 7758-16-9) is a versatile inorganic salt widely recognized for its excellent sequestering, buffering, and emulsifying properties. This makes it a critical functional ingredient for controlling water hardness and stabilizing product formulations across numerous industries. Key industrial users include manufacturers in the food processing, detergent, water treatment, and metal finishing sectors who require reliable and consistent chemical performance.

Application

• Food Industry: Used as an emulsifier, buffering agent, and texturizer in processed meats, seafood, and poultry to improve moisture retention and product stability.
• Detergent & Cleaning Formulations: Acts as a water softener and builder in industrial and institutional cleaning products, enhancing surfactant efficiency by chelating calcium and magnesium ions.
• Water Treatment: Employed as a corrosion and scale inhibitor in industrial cooling and boiler water systems to prevent pipe fouling and maintain heat transfer efficiency.
• Metal Treatment & Surface Finishing: Serves as a component in electroplating baths and metal cleaning/pre-treatment solutions for surface conditioning and rust removal.
• Ceramics & Drilling Fluids: Functions as a dispersant for clays and pigments in ceramic slips and as a thinning agent in oilfield drilling muds.
• Textile Processing: Used in scouring and bleaching baths to sequester metal ions that could interfere with dyeing processes and fabric quality.

Basic Information

Product Name	Sodium Pyrophosphate
CAS No.	7758-16-9
Molecular Formula	Na4P2O7
Molecular Weight	265.90 g/mol (Anhydrous)
Synonyms	Tetrasodium Pyrophosphate (TSPP); Diphosphoric Acid, Tetrasodium Salt; Sodium Diphosphate; Tetrasodium Diphosphate; Pyrophosphoric Acid, Tetrasodium Salt; Disodium Diphosphate; INS No. 450(iii); Food Grade E450(iii)
EINECS	231-835-0

Quality Control

Our Sodium Pyrophosphate is manufactured under a stringent quality management system. We supply various grades, including Technical, Food (FCC), and high-purity grades, with specifications tailored to meet the demands of your specific application. Every batch is accompanied by a comprehensive Certificate of Analysis (COA) to ensure traceability and compliance with relevant industry standards.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area. This product is hygroscopic (moisture-sensitive) and must be kept in original packaging or a suitable moisture-proof container to prevent caking and degradation. Recommended storage temperature is between 15°C and 25°C (59°F and 77°F). Keep away from strong acids.

Specification

Item	Specification
Appearance	White crystalline powder or granules
Identification (IR)	Conforms
Assay (as Na4P2O7)	≥ 95.0% - 100.5%
pH (1% Solution)	9.5 - 10.5
Water Insoluble Matter	≤ 0.2%
Loss on Drying	≤ 0.5%
Heavy Metals (as Pb)	≤ 10 ppm
Arsenic (As)	≤ 3 ppm
Fluoride (F)	≤ 10 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.