Description

Triammonium Hydrogen Diphosphate is an inorganic ammonium phosphate salt with significant industrial utility. This compound is valued for its role as a source of both ammonium and phosphate ions in specialized formulations. It is primarily sought by manufacturers in the fertilizer, flame retardant, and specialty chemical synthesis sectors. Its properties make it suitable for applications requiring controlled nutrient release or specific buffering capacity.

Application

• Specialty Fertilizers and Nutrient Solutions: Acts as a controlled-release source of nitrogen and phosphorus for horticultural and agricultural applications.
• Flame Retardant Formulations: Used as a component in intumescent coatings and fire-resistant materials for plastics, textiles, and wood.
• Laboratory Reagent and Buffer Agent: Serves in analytical chemistry and biochemical research for preparing specific buffer solutions.
• Precursor for Chemical Synthesis: Employed in the production of other phosphate salts and ceramic materials.
• Water Treatment and Corrosion Inhibition: Functions as a scale and corrosion inhibitor in certain industrial water systems.
• Food Additive (where approved): Used as a nutrient supplement, pH regulator, or emulsifying salt in specific food processing applications, subject to local regulations.

Basic Information

Product Name	Triammonium Hydrogen Diphosphate
CAS No.	13813-81-5
Molecular Formula	(NH4)3HP2O7
Molecular Weight	247.03 g/mol
Synonyms	Ammonium Dihydrogen Diphosphate; Triammonium Diphosphate; Ammonium Pyrophosphate, Acid; Diphosphoric Acid, Triammonium Salt; Triammonium Pyrophosphate; (NH4)3HP2O7; APP (in certain contexts); Ammonium Acid Pyrophosphate
EINECS	237-468-1

Quality Control

Our Triammonium Hydrogen Diphosphate is manufactured under a strict 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 supply grades suitable for industrial, technical, and research applications, with compliance to relevant industry standards.

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). This product is hygroscopic (moisture-sensitive) and must be kept in a dry environment to prevent caking and decomposition. Keep away from strong acids and strong oxidizing agents.

Specification

Item	Specification
Appearance	White crystalline powder or granules
Identification (IR)	Conforms
Assay (as (NH4)3HP2O7)	≥ 98.0 %
pH (5% solution)	4.0 - 6.0
Loss on Drying	≤ 2.0 %
Water Insoluble Matter	≤ 0.5 %
Heavy Metals (as Pb)	≤ 20 ppm

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