Description

Antimony Phosphate is an inorganic compound valued for its role as a specialized catalyst and flame retardant synergist in high-performance polymer formulations. Its primary commercial significance lies in enhancing the thermal stability and fire resistance of plastics, textiles, and coatings, particularly when used in combination with halogenated compounds. This product is essential for manufacturers in the plastics, electronics, and construction material industries seeking to meet stringent safety and regulatory standards for their products.

Application

• Flame Retardant Synergist: A key component in flame-retardant masterbatches for engineering plastics like polyamides (PA), polyesters (PET, PBT), and polyolefins, where it enhances the efficacy of halogenated flame retardants.
• Polymer Catalyst: Used as a catalyst or catalyst component in specific polycondensation and esterification reactions for the production of specialty polymers and resins.
• Ceramic and Glass Production: Acts as a fining agent and opacifier in the manufacture of certain specialty glasses and ceramic glazes.
• Chemical Synthesis: Serves as a reagent or intermediate in the synthesis of other antimony-based compounds and inorganic materials.
• Textile Treatment: Imparts flame-retardant properties to technical textiles, fibers, and fabrics used in protective clothing and furnishings.
• Electronic Encapsulants: Incorporated into epoxy resins and other encapsulating materials for electronic components to improve fire safety.

Basic Information

Product Name	Antimony Phosphate
CAS No.	12036-46-3
Molecular Formula	O4PSb
Molecular Weight	216.73 g/mol
Synonyms	Antimony orthophosphate; Phosphoric acid, antimony(3+) salt (1:1); Antimony(III) phosphate; Stibium phosphate; Antimonous phosphate; SbPO4; Antimony monophosphate
EINECS	234-861-9

Quality Control

Our Antimony Phosphate is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure consistent purity, chemical composition, and physical properties. We provide full traceability and detailed Certificates of Analysis (COA) with each shipment, confirming compliance with agreed specifications. Our quality commitment supports your need for reliable and reproducible performance in demanding industrial applications.

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 away from incompatible materials such as strong acids and strong bases. The container must be kept tightly sealed due to its hygroscopic (moisture-sensitive) nature to prevent caking or degradation.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms
Assay (as SbPO4)	≥ 98.0 %
Antimony (Sb) Content	55.0 - 57.0 %
Phosphate (PO4) Content	42.0 - 44.0 %
Loss on Drying	≤ 1.0 %
Heavy Metals (as Pb)	≤ 20 ppm
Particle Size (D50)	< 10 µm (or as per customer requirement)

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