Description

Ammonium Metaphosphate is an inorganic salt of metaphosphoric acid, known for its role as a source of phosphorus and nitrogen. This compound is valued for its high solubility and effectiveness as a specialized nutrient and chemical intermediate in demanding industrial processes. It is primarily sought by manufacturers in the fertilizer, flame retardant, and specialty chemical synthesis sectors for its unique properties.

Application

• Specialty Fertilizers & Nutrient Solutions: Used as a highly soluble source of phosphorus and nitrogen in foliar feeds and high-efficiency liquid fertilizer formulations for controlled-release agriculture.
• Flame Retardant Systems: Acts as an intumescent component and acid source in flame-retardant coatings, plastics, and textiles, promoting char formation.
• Chemical Synthesis & Catalysis: Serves as a precursor or catalyst in the production of other phosphate salts and in specific organic synthesis reactions.
• Metal Treatment & Corrosion Inhibition: Employed in formulations for metal surface treatment and as a corrosion inhibitor in water treatment systems.
• Ceramic & Glass Production: Functions as a fluxing agent and source of P2O5 to modify the properties of specialty glasses and ceramic glazes.
• Laboratory & Research Reagent: Used as a high-purity analytical reagent and standard in chemical research and quality control laboratories.

Basic Information

Product Name	Ammonium Metaphosphate
CAS No.	13446-46-3
Molecular Formula	NH4PO3
Molecular Weight	98.97 g/mol
Synonyms	Ammonium metaphosphate; Monoammonium metaphosphate; Ammonium polyphosphate (linear, short-chain); Phosphoric acid, ammonium salt (1:1); Metaphosphoric acid, ammonium salt; Azanium phosphate; UNII-9K5153W24S
EINECS	236-623-1

Quality Control

Our Ammonium Metaphosphate is manufactured under a stringent quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise chemical and physical specifications. A detailed Certificate of Analysis (COA) is provided with every shipment, confirming compliance with agreed-upon parameters for purity, assay, and impurity levels.

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. Keep away from incompatible materials such as strong acids and strong bases.

Specification

Item	Specification
Appearance	White crystalline powder or granules
Identification (IR)	Conforms
Assay (as NH4PO3)	≥ 98.0 %
pH (5% solution)	4.0 - 6.0
Water Solubility	Freely soluble
Loss on Drying	≤ 2.0 %
Heavy Metals (as Pb)	≤ 20 ppm

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