Description

Zinc Stannate is an inorganic compound with the chemical formula ZnSnO₃, functioning as a highly effective flame retardant and smoke suppressant. Its primary commercial value lies in its synergistic action with other halogen-free flame retardants, enhancing fire safety while maintaining the physical properties of polymer materials. This makes it a critical additive for manufacturers in the plastics, rubber, and wire & cable industries seeking to meet stringent fire safety regulations without compromising material performance.

Application

• Halogen-Free Flame Retardant for Polymers: A key synergistic component in PVC, polyolefins, engineering plastics, and elastomers to achieve UL94 V-0 ratings.
• Wire and Cable Insulation: Used in sheathing and insulation compounds to provide flame retardancy and reduce smoke density during combustion.
• Electronic Encapsulation Materials: Incorporated into epoxy resins and other potting compounds to protect sensitive electronic components from fire.
• Transportation Interiors: Applied in automotive, rail, and aerospace interior materials like seat foams, panels, and textiles to improve fire resistance.
• Construction Materials: Added to coatings, sealants, and certain construction polymers to enhance fire safety in buildings.
• Ceramic and Glass Frits: Acts as a opacifier and flux in certain specialty ceramic glazes and glass compositions.

Basic Information

Product Name	Zinc Stannate
CAS No.	12036-37-2
Molecular Formula	ZnSnO₃
Molecular Weight	232.11 g/mol
Synonyms	Zinc Tin Oxide; Stannic Acid Zinc Salt; Zinc Tin Trioxide; Tin Zinc Oxide; ZnSnO₃; Flame Retardant ZS; ZHS (Zinc Hydroxy Stannate precursor); Zinc metastannate
EINECS	234-828-4

Quality Control

Our Zinc Stannate is manufactured under a strict quality management system. Each batch undergoes comprehensive analysis to ensure consistent purity, particle size distribution, and flame retardant efficacy. We provide detailed Certificates of Analysis (COA) with every shipment, documenting key parameters. Our production adheres to ISO 9001 standards, and the product is compliant with global regulations such as REACH.

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 the container tightly sealed to minimize exposure to moisture and atmospheric carbon dioxide. Separate from strong acids and strong oxidizing agents.

Specification

Item	Specification
Appearance	White fine powder
Identification (IR)	Conforms
Assay (ZnSnO₃)	≥ 98.0 %
Zinc (Zn) Content	27.5 - 28.5 %
Tin (Sn) Content	50.5 - 51.5 %
Moisture (Loss on Drying)	≤ 0.5 %
Particle Size (D50)	1.0 - 3.0 µm
Heavy Metals (as Pb)	≤ 20 ppm
pH (10% slurry)	7.0 - 9.0

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