Description

Potassium Metaphosphate is an inorganic salt of metaphosphoric acid, serving as a versatile source of potassium and phosphate ions. This compound is valued for its role as a nutrient supplement and functional additive in various industrial and agricultural processes. It is primarily utilized by manufacturers in the fertilizer, food, and specialty chemical sectors seeking a consistent and high-purity phosphate source.

Application

• Fertilizer Industry: Used as a water-soluble phosphorus and potassium source in high-efficiency liquid and foliar fertilizers.
• Food Additive: Functions as a sequestrant, emulsifier, and nutrient fortifier in processed foods and beverages (subject to compliance with local regulations like FCC).
• Laboratory Reagent: Employed in analytical chemistry and research as a standard or reagent in specific synthetic pathways.
• Metal Treatment: Acts as a component in formulations for metal surface treatment and corrosion inhibition.
• Ceramics & Glass: Serves as a fluxing agent to modify melting points and properties in ceramic glazes and specialty glass production.
• Detergent Builder: Used in certain industrial cleaning formulations for its water-softening and sequestering properties.

Basic Information

Product Name	Potassium Metaphosphate
CAS No.	29057-10-1
Molecular Formula	KPO3
Molecular Weight	118.07 g/mol
Synonyms	Potassium Polymetaphosphate; Monopotassium Metaphosphate; Potassium Polyphosphate; Kurrol's Salt; Potassium Trimetaphosphate (cyclic form); KPO3; Metaphosphoric Acid, Potassium Salt; Potassium Cyclotriphosphate
EINECS	Contact for details

Quality Control

Our Potassium Metaphosphate is produced under a rigorous quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise chemical and physical specifications. A Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment. We can tailor specifications to meet requirements for technical, food, and reagent grades.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed after opening to prevent moisture absorption and caking.

Specification

Item	Specification
Appearance	White powder or granules
Identification (IR)	Conforms
Assay (as KPO3)	≥ 96.0 %
pH (1% solution)	5.0 - 7.0
Loss on Drying	≤ 2.0 %
Water Insoluble Matter	≤ 0.5 %
Heavy Metals (as Pb)	≤ 10 ppm
Arsenic (As)	≤ 3 ppm

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