Description

Diammonium Phosphonate CAS NO 22132-71-4 is an inorganic salt of phosphonic acid, serving as a key source of phosphorus and nitrogen. This compound is valued for its role as a flame retardant synergist and a corrosion inhibitor in various industrial water treatment formulations. It is primarily utilized by manufacturers in the polymer, textile, and industrial cleaning sectors who require effective and stable phosphorus-based additives.

Application

• As a synergist in halogen-free flame retardant systems for plastics, textiles, and coatings.
• As an effective corrosion and scale inhibitor in industrial cooling and boiler water treatment.
• In the formulation of industrial and institutional cleaning products and detergents.
• As a stabilizer and intermediate in the synthesis of other phosphonate compounds.
• In pulp and paper processing for peroxide stabilization and as a chelating agent.
• For metal surface treatment and pretreatment processes.

Basic Information

Product Name	Diammonium Phosphonate
CAS No.	22132-71-4
Molecular Formula	H9N2O3P
Molecular Weight	134.07 g/mol
Synonyms	Diammonium Hydrogen Phosphonate; Ammonium Phosphonate; Phosphonic Acid, Diammonium Salt; DAPO; Dihydrogen Phosphonate Diammonium Salt; Ammonium Dihydrogenphosphite; Diammonium Phosphite
EINECS	244-798-1

Quality Control

Our Diammonium Phosphonate 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) documenting purity, assay, and impurity profiles is available for review and provided with every shipment.

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 (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent caking and degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	White crystalline powder or granules
Identification (IR)	Conforms
Assay (Diammonium Phosphonate)	≥ 98.0 %
pH (5% solution)	5.0 - 7.0
Water Content	≤ 1.0 %
Heavy Metals (as Pb)	≤ 10 ppm

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