Description

Diammonium Dihydrogenpyrophosphate is an inorganic ammonium salt of pyrophosphoric acid, widely recognized for its role as a source of phosphorus and nitrogen. This compound is valued for its flame-retardant properties and its function as a nutrient and buffering agent in various industrial processes. It is essential for manufacturers in the sectors of flame retardants, specialty fertilizers, metal treatment, and food processing, where controlled phosphate chemistry is required.

Application

• As a key component in intumescent flame retardant systems for plastics, textiles, and coatings.
• As a phosphorus and nitrogen source in specialty fertilizers and nutrient solutions.
• In metal surface treatment and corrosion inhibition formulations.
• As a buffering and leavening agent in select food processing applications.
• As a raw material in the synthesis of other specialty phosphates and chemical intermediates.
• In ceramic and glass production to modify properties.
• For water treatment as a scale and corrosion inhibitor.
• In detergent and cleaning formulations where phosphate builders are applicable.

Basic Information

Product Name	Diammonium Dihydrogenpyrophosphate
CAS No.	13597-86-9
Molecular Formula	H8N2O7P2
Molecular Weight	246.03 g/mol
Synonyms	Ammonium Dihydrogen Pyrophosphate; Diammonium Pyrophosphate; Ammonium Acid Pyrophosphate; DAPPy; Pyrophosphoric Acid, Diammonium Salt; APP (Ammonium Polyphosphate precursor); (NH4)2H2P2O7; Ammonium Diphosphate
EINECS	237-069-1

Quality Control

Our Diammonium Dihydrogenpyrophosphate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise chemical and physical specifications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to guarantee traceability and compliance with your requirements.

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 material is hygroscopic (moisture-sensitive) and must be kept in a dry environment to prevent caking and degradation. Keep away from incompatible materials such as strong acids.

Specification

Item	Specification
Appearance	White crystalline powder or granules
Identification (IR)	Conforms
Assay (as (NH4)2H2P2O7)	≥ 98.0 %
pH (5% solution)	3.5 - 5.5
Water Insoluble Matter	≤ 0.1 %
Loss on Drying	≤ 0.5 %
Heavy Metals (as Pb)	≤ 10 ppm
Iron (Fe)	≤ 20 ppm

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