Description

Calcium Antimonate is an inorganic compound primarily valued for its role as a high-performance opacifier and flame retardant synergist. Its key commercial value lies in providing excellent opacity, whiteness, and thermal stability in ceramic and polymer applications. This product is essential for manufacturers in the ceramics, plastics, and glass industries seeking to enhance product durability and safety.

Application

• Ceramic Glazes & Frits: Acts as a highly effective opacifier in white and colored glazes for tiles, sanitaryware, and tableware, providing brilliant whiteness and masking power.
• Flame Retardant Synergist: Used in combination with halogenated compounds in plastics, textiles, and coatings to significantly improve fire resistance and reduce smoke emission.
• Glass Manufacturing: Employed as a fining agent and decolorizer in specialty glass production to remove bubbles and improve clarity.
• Pigments & Ceramic Colors: Serves as a base or component in the formulation of yellow and orange ceramic pigments and stains.
• Electronic Ceramics: Used in the production of certain dielectric and piezoelectric materials for electronic components.
• Smoke Suppressant: Incorporated into PVC and other polymers to act as a smoke suppressant in flame-retardant formulations.

Basic Information

Product Name	Calcium Antimonate
CAS No.	55200-87-8
Molecular Formula	CaSb2O6 (commonly represented)
Molecular Weight	435.44 g/mol (approx., for CaSb2O6)
Synonyms	Calcium Antimonate; Antimonic Acid, Calcium Salt; Calcium Pyroantimonate; Calcium Hexahydroxoantimonate; Flame Retardant CA; Opacifier CA; CAS 55200-87-8
EINECS	259-560-7

Quality Control

Our Calcium Antimonate is manufactured under a strict quality management system. Each batch undergoes rigorous testing for key parameters including chemical assay, particle size distribution, and impurity content to ensure consistent performance. Certificates of Analysis (COA) are provided with every shipment to guarantee compliance with your specifications and industry standards.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep the container tightly sealed to minimize exposure to atmospheric moisture. Separate from strong acids and reducing agents.

Specification

Item	Specification
Appearance	White to off-white powder
Assay (as CaSb2O6)	≥ 98.0 %
Antimony Trioxide (Sb2O3) Content	≥ 78.0 %
Calcium Oxide (CaO) Content	≥ 20.0 %
Particle Size (D50)	1.0 - 3.0 µm
Loss on Drying (105°C)	≤ 0.5 %
Water Soluble Matter	≤ 0.3 %
Heavy Metals (as Pb)	≤ 20 ppm
Arsenic (As)	≤ 5 ppm
Lead (Pb)	≤ 10 ppm

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