Description

Potassium Metaphosphate is an inorganic salt with the chemical formula (KPO₃)ₙ, valued for its role as a source of potassium and phosphate ions in specialized industrial and technical applications. This compound is essential for processes requiring controlled release or specific reactivity of these key components. It finds utility in sectors such as analytical chemistry, specialty glass manufacturing, and as a potential component in certain fertilizer and food additive systems where its unique metaphosphate structure is advantageous.

Application

• Analytical Reagent: Used in laboratory settings for specific qualitative and quantitative analyses.
• Specialty Glass & Ceramics: Acts as a fluxing agent and modifier in the production of certain optical and technical glasses.
• Food Additive (where approved): Functions as a sequestrant, texturizer, or nutrient source in specific food processing applications.
• Agricultural & Horticultural Products: Investigated for use in controlled-release fertilizers and plant nutrient solutions.
• Metal Surface Treatment: Employed in formulations for cleaning, polishing, or corrosion protection.
• Catalyst & Chemical Synthesis: Serves as a catalyst or reagent in organic and inorganic synthesis processes.
• Water Treatment: Used in specific formulations for scale and corrosion inhibition in industrial water systems.
• Pharmaceutical & Cosmetic Excipient (research grade): Explored for use as a buffering or stabilizing agent.

Basic Information

Product Name	Potassium Metaphosphate
CAS No.	7790-53-6
Molecular Formula	(KPO₃)ₙ
Molecular Weight	118.07 (monomeric unit)
Synonyms	Potassium Polymetaphosphate; Potassium Polyphosphate; Kurrol's salt; Potassium Trimetaphosphate (cyclic form); Monopotassium Metaphosphate; Potassium Metaphosphate Glass; KPO₃; Potassium Phosphate (Meta-); Kaliummetaphosphat
EINECS	232-212-6

Quality Control

Our Potassium Metaphosphate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets defined specifications for identity, purity, and composition. Certificates of Analysis (COA) are provided with every shipment, detailing key parameters such as assay, heavy metal content, and loss on drying. We can supply grades suitable for technical, food, and research applications, with compliance to relevant standards such as FCC (Food Chemicals Codex) where applicable.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed to prevent absorption of atmospheric moisture. Store away from incompatible materials such as strong acids.

Specification

Item	Specification
Appearance	White powder or granules
Identification (IR)	Conforms
Assay (as KPO₃)	≥ 96.0 %
pH (1% solution)	5.0 - 8.0
Loss on Drying	≤ 2.0 %
Water Insoluble Matter	≤ 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.