Description

Potassium Antimonate, Trihydrate is an inorganic salt of antimony, widely recognized for its role as a flame retardant synergist and opacifying agent. This compound is valued for its ability to enhance fire resistance in various materials while maintaining clarity in glass and ceramic applications. It serves as a critical raw material for manufacturers in the plastics, glass, ceramics, and textile industries seeking to improve product safety and performance.

Application

• Flame Retardant Synergist: Used in conjunction with halogenated compounds in plastics (e.g., PVC, polyolefins), textiles, and coatings to significantly enhance fire resistance.
• Glass & Ceramics Opacifier: Imparts a white, opaque finish in specialty glass, enamel glazes, and ceramic frits.
• Catalyst Precursor: Serves as a source of antimony in the production of catalysts for polyester (PET) resin manufacturing.
• Electroplating & Metal Finishing: Used in specific electroplating baths for depositing antimony alloys.
• Smoke Suppressant: Contributes to reducing smoke emission in certain flame-retarded polymer formulations.
• Ceramic Pigment Stabilizer: Acts as a stabilizer in the formulation of yellow and other ceramic pigments.

Basic Information

Product Name	Potassium Antimonate, Trihydrate
CAS No.	82457-76-9
Molecular Formula	KSbO₃·3H₂O or K[Sb(OH)₆]
Molecular Weight	262.90 g/mol (Anhydrous basis: 208.86 g/mol)
Synonyms	Potassium Hexahydroxoantimonate(V); Antimonic Acid (H6SbO6) Potassium Salt; Potassium Pyroantimonate; KSb(OH)6; Potassium Antimonate Hydrate; Antimony Potassium Oxide Hydrate; Potassium Antimonate (K[Sb(OH)6])
EINECS	Contact for details

Quality Control

Our Potassium Antimonate, Trihydrate is manufactured under a stringent quality management system. Each batch undergoes rigorous analytical testing to ensure consistent purity, chemical composition, and physical properties meet defined specifications. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profiles, and loss on drying is provided with every shipment to guarantee traceability and compliance with your technical 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). Due to its hygroscopic nature, the container must be kept tightly sealed after opening to prevent moisture absorption, which can affect product performance and flow characteristics.

Specification

Item	Specification
Appearance	White crystalline powder
Identification (IR)	Conforms
Assay (as KSbO₃·3H₂O)	≥ 98.0 %
Antimony (Sb) Content	45.0 - 47.0 %
Potassium (K) Content	14.5 - 15.5 %
Loss on Drying	19.0 - 22.0 %
Chloride (Cl)	≤ 0.01 %
Sulfate (SO₄)	≤ 0.02 %
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.