Description

Cassiterite (SnO2) is the primary and most important ore mineral of tin, with the chemical formula SnO2. This high-purity material is critical for industrial applications requiring a stable and reliable source of tin oxide. It is essential for manufacturers in the ceramics, glass, catalyst, and electronics industries seeking consistent material properties for advanced material synthesis and surface treatments.

Application

• Primary Tin Production: The fundamental raw material for the extraction and smelting of metallic tin.
• Ceramics & Glass Manufacturing: Used as an opacifier and colorant to produce white, opaque glazes, enamels, and glass.
• Catalyst & Catalyst Support: Serves as a base material or support for catalysts in oxidation and dehydrogenation reactions within the chemical industry.
• Electronics & Sensors: A key material for producing conductive transparent films (TCOs) and gas sensors due to its semiconducting properties.
• Abrasive & Polishing Compounds: Utilized in fine polishing pastes for stone, glass, and metals.
• Specialty Pigments: Employed in the formulation of heat-stable and chemically resistant pigments.

Basic Information

Product Name	Cassiterite (SnO2)
CAS No.	1317-45-9
Molecular Formula	SnO2
Molecular Weight	150.71 g/mol
Synonyms	Tin(IV) Oxide; Stannic Oxide; Tin Dioxide; Flowers of Tin; Tin Peroxide; Cassiterite Ore; Black Tin; Putty Powder
EINECS	215-265-7

Quality Control

Our Cassiterite (SnO2) is sourced and processed to meet stringent quality standards for industrial use. Each batch undergoes rigorous analytical testing to ensure consistent chemical composition, purity, and physical properties. A Certificate of Analysis (COA) detailing key parameters such as tin oxide content and impurity levels is available upon request to support your quality assurance protocols.

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 sealed when not in use to minimize exposure to atmospheric moisture and dust.

Specification

Item	Specification
Appearance	Brownish-black to black crystalline powder or granules
Identification (XRD)	Complies (Cassiterite pattern)
Assay (as SnO2)	≥ 98.0 %
Tin (Sn) Content	≥ 78.0 %
Iron (Fe)	≤ 0.5 %
Lead (Pb)	≤ 0.1 %
Arsenic (As)	≤ 0.01 %
Loss on Drying (105°C)	≤ 1.0 %

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