Description

Zinc Dihydrogen Phosphate is an inorganic zinc salt of phosphoric acid, primarily recognized for its role as a corrosion-inhibiting pigment and nutrient source. This compound matters for its ability to form protective layers on metal surfaces and its utility as a controlled-release source of zinc and phosphate ions. Industries such as protective coatings, metal surface treatment, ceramics, and specialty fertilizers require this chemical for its functional properties.

Application

• Corrosion Inhibiting Pigments: A key component in primers and anti-corrosive paints for steel and other metals.
• Metal Pretreatment & Phosphating: Used in conversion coatings to prepare metal surfaces for painting or powder coating.
• Ceramics & Glass Production: Acts as a flux and modifier in glaze formulations and specialty glass.
• Dental Cements: Employed in certain zinc phosphate cement formulations for its setting properties.
• Flame Retardant Synergist: Used in combination with other compounds in polymer and textile treatments.
• Specialty Fertilizers & Nutrient Solutions: Provides a combined source of zinc and phosphorus in agricultural and horticultural applications.
• Laboratory Reagent: Serves as a chemical precursor and reagent in research and analytical chemistry.

Basic Information

Product Name	Zinc Dihydrogen Phosphate
CAS No.	13598-37-3
Molecular Formula	Zn(H2PO4)2
Molecular Weight	295.39 g/mol
Synonyms	Zinc bis(dihydrogen phosphate); Acid zinc phosphate; Zinc phosphate monobasic; Zinc diorthophosphate; Zinc(2+) dihydrogen phosphate; Phosphoric acid, zinc salt (1:2); Zinc phosphate (Zn(H2PO4)2)
EINECS	237-067-2

Quality Control

Our Zinc Dihydrogen Phosphate is manufactured under a strict quality management system. Each batch undergoes rigorous 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 to guarantee consistency and traceability for your industrial processes.

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 absorption of atmospheric moisture, which can lead to caking or chemical degradation.

Specification

Item	Specification
Appearance	White crystalline powder or lumps
Identification (IR)	Conforms
Assay (as Zn(H2PO4)2)	≥ 98.0 %
Zinc (Zn) Content	22.0 - 23.0 %
Phosphate (as P2O5) Content	Contact for details
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.