Description

Sodium Polyphosphate CAS NO 50813-16-6 is a versatile inorganic polymer composed of sodium cations and polyphosphate anions. This compound is valued for its excellent sequestering, dispersing, and water-softening properties, making it a critical functional additive in numerous industrial processes. It is essential for manufacturers in the water treatment, food processing, detergent formulation, and ceramics industries seeking to control scale, stabilize products, and improve cleaning efficiency.

Application

• Water Treatment: Acts as a highly effective scale and corrosion inhibitor in cooling towers, boilers, and reverse osmosis systems.
• Food Industry: Used as an emulsifier, texturizer, and moisture-retaining agent in processed meats, seafood, and dairy products (food-grade specifications apply).
• Detergents & Cleaners: Functions as a builder to soften water, enhance surfactant performance, and prevent dirt redeposition in industrial and institutional cleaning formulations.
• Ceramics & Metallurgy: Serves as a dispersant for slips and glazes and as a deflocculant in mineral processing and metal surface treatment.
• Oilfield Applications: Employed as a clay stabilizer and scale inhibitor in drilling muds and production fluids.
• Industrial Cleaning: Key component in metal cleaning and derusting solutions due to its chelating power on metal ions like calcium and magnesium.

Basic Information

Product Name	Sodium Polyphosphate
CAS No.	50813-16-6
Molecular Formula	(NaPO3)n
Molecular Weight	Variable (Polymer)
Synonyms	Sodium Hexametaphosphate; Graham's Salt; Glassy Sodium Phosphate; SHMP; Sodium Polyphosphates, Glassy; Sodium Tetrapolyphosphate; Sodium Metaphosphate; EINECS 256-779-4
EINECS	256-779-4

Quality Control

Our Sodium Polyphosphate is manufactured under a stringent quality management system. Production adheres to relevant specifications, including FCC (Food Chemicals Codex) for food-grade material and industrial standards for technical applications. Every batch is tested for critical parameters such as assay (P2O5 content), pH, and insoluble matter. Certificates of Analysis (COA) documenting full compliance are available upon request to ensure your quality assurance needs are met.

Storage

Preserve in a tightly closed container, protected from light. Due to its hygroscopic nature, store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep the container tightly sealed when not in use to prevent caking and degradation due to moisture absorption. Store away from incompatible materials.

Specification

Item	Specification
Appearance	White powder or granules
Identification (IR)	Conforms
Assay (as P2O5)	≥ 68.0 %
pH (1% Solution)	5.8 - 7.0
Water Insoluble Matter	≤ 0.05 %
Heavy Metals (as Pb)	≤ 10 ppm
Arsenic (As)	≤ 3 ppm
Loss on Drying	≤ 0.5 %

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