Description

Metaphosphate CAS NO 17121-12-9 is a high-purity inorganic phosphate compound, a polymer of phosphoric acid, valued for its sequestering and water-softening properties. It is a critical intermediate and functional additive in numerous industrial processes where metal ion control and pH stabilization are required. This product is essential for manufacturers in the water treatment, detergent formulation, food processing, and ceramic industries seeking reliable performance and consistent quality.

Application

• Water Treatment: Acts as a scale and corrosion inhibitor in cooling towers, boilers, and reverse osmosis systems by sequestering calcium, magnesium, and other metal ions.
• Detergent & Cleaning Formulations: Serves as a powerful builder and water softener in industrial and institutional cleaning products, enhancing surfactant efficiency.
• Food Industry: Used as a sequestrant, emulsifier, and texturizer in processed foods, and as a water treatment agent in beverage production.
• Ceramics & Glass Manufacturing: Functions as a fluxing agent to lower melting temperatures and modify the properties of glazes and glass batches.
• Metal Surface Treatment: Employed in metal cleaning, plating, and phosphating baths for surface preparation and conditioning.
• Oil Field Chemicals: Used as a scale inhibitor in drilling muds and production fluids to prevent mineral deposition.
• Laboratory & Analytical Reagent: Serves as a standard or reagent in various chemical analyses and research applications.
• Textile Processing: Acts as a dispersing and sequestering agent in dyeing and bleaching processes to improve color uniformity.

Basic Information

Item	Details
Product Name	Metaphosphate
CAS No.	17121-12-9
Molecular Formula	(HPO3)n
Molecular Weight	Variable (Polymer)
Synonyms	Polyphosphoric acid, Metaphosphoric acid polymer, Polymetaphosphate, Graham's salt, Sodium polymetaphosphate (common salt form), Insoluble sodium metaphosphate, Kurrol's salt, Maddrell's salt, Calgon (trade name component), Glassy sodium phosphate, Sodium hexametaphosphate (related compound), EINECS 241-182-5
EINECS	241-182-5

Quality Control

Our Metaphosphate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, composition, and performance. We provide comprehensive Certificates of Analysis (COA) with key parameters such as assay, pH, and insoluble matter content. Our production can align with relevant industrial and food-grade standards (e.g., FCC) upon request, ensuring reliable and consistent quality for your critical applications.

Storage

Preserve in a tightly closed container, protected from light. Due to its hygroscopic (moisture-sensitive) nature, this material must be stored in a cool, dry, and well-ventilated area. The recommended storage temperature is between 15°C and 25°C (59°F and 77°F). Keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture, which can lead to caking and degradation of product quality.

Specification

Item	Specification
Appearance	White powder or glassy granules
Identification (IR)	Conforms
Assay (as P2O5)	≥ 65.0 %
pH (1% Solution)	5.5 - 7.5
Water Insoluble Matter	≤ 0.1 %
Heavy Metals (as Pb)	≤ 10 ppm
Loss on Drying	≤ 1.0 %

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