Description

Sodium Pyroantimonate is an inorganic antimony compound with the chemical formula Na₂H₂Sb₂O₇·H₂O. This specialized chemical serves as a critical source of antimony in a highly reactive and soluble form, essential for various high-temperature and catalytic processes. It is primarily utilized by manufacturers in the glass, ceramics, and flame-retardant industries, where precise antimony doping and opacity control are required.

Application

• Glass Manufacturing: Acts as a fining agent and decolorizer to remove bubbles and impurities, and as an opacifier in specialty glasses and enamels.
• Ceramics & Glazes: Used as an opacifying agent in ceramic glazes and frits to produce white, opaque finishes.
• Flame Retardants: Serves as a synergist and antimony source in the formulation of halogen-based flame retardants for plastics, textiles, and rubber.
• Catalyst Production: Employed as a precursor or component in catalysts for organic synthesis and petroleum refining processes.
• Pigments & Dyes: Functions in the production of certain yellow pigments and as a mordant in dyeing processes.
• Electronics: Used in the manufacturing of certain electronic ceramics and as a dopant in semiconductor materials.

Basic Information

Product Name	Sodium Pyroantimonate
CAS No.	12507-68-5
Molecular Formula	Na₂H₂Sb₂O₇·H₂O
Molecular Weight	443.52 g/mol (for monohydrate)
Synonyms	Antimonic acid (H4Sb2O7), disodium salt, monohydrate; Disodium dihydrogen diantimony heptaoxide monohydrate; Sodium antimonate(V); Sodium hexahydroxoantimonate; Pyroantimonate sodium salt; Antimony sodium oxide; Sodium metaantimonate
EINECS	235-554-5

Quality Control

Our Sodium Pyroantimonate is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity. We adhere to relevant industrial standards, and our quality assurance includes testing for key parameters such as antimony content, moisture, and impurity levels. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and safety data is 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). Keep away from incompatible materials such as strong acids and reducing agents. The product is hygroscopic (moisture-sensitive); ensure the container is kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Assay (as Sb₂O₅)	Min. 75.0%
Antimony (Sb) Content	Min. 55.0%
Sodium (Na) Content	Contact for details
Loss on Drying	Max. 1.0%
Water Insoluble Matter	Max. 0.5%
Chloride (Cl)	Max. 0.1%
Sulfate (SO₄)	Max. 0.1%
Heavy Metals (as Pb)	Max. 20 ppm
Iron (Fe)	Max. 50 ppm

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