Description

Potassiumstannatetrihydrate CAS NO 20363-05-7 is a specialized inorganic salt, also known as potassium stannate trihydrate, valued for its role as a soluble source of tin(IV) ions in aqueous systems. This compound is essential for processes requiring controlled tin deposition or the introduction of tin into chemical matrices. It is primarily sought by manufacturers in the electroplating, ceramic, and glass industries, where its consistent quality and purity are critical for final product performance.

Application

• Tin and Tin-Alloy Electroplating: A key component in alkaline plating baths for depositing tin and tin-zinc alloys onto steel, copper, and other substrates, providing corrosion resistance and solderability.
• Ceramic and Glass Manufacturing: Acts as a precursor for tin oxide coatings, which impart electrical conductivity, infrared reflectivity, and durability to glass and ceramic surfaces.
• Catalyst Preparation: Serves as a starting material in the synthesis of heterogeneous catalysts used in organic synthesis and oxidation reactions.
• Textile Treatment: Used in flame-retardant and weight-increasing treatments for fabrics.
• Laboratory Reagent: Employed as a standardized source of stannate ions in analytical chemistry and research applications.
• Intermediate for Specialty Chemicals: A building block in the production of other tin-containing compounds and stabilizers.

Basic Information

Product Name	Potassiumstannatetrihydrate
CAS No.	20363-05-7
Molecular Formula	K2SnO3·3H2O
Molecular Weight	298.95 g/mol
Synonyms	Potassium Stannate Trihydrate; Dipotassium Tin Trioxide Trihydrate; Stannate (SnO32-), dipotassium, trihydrate; Tin Potassium Oxide Trihydrate; Potassium Hexahydroxystannate(IV); K2Sn(OH)6; Dipotassium Trioxostannate Trihydrate
EINECS	243-238-6

Quality Control

Our Potassium Stannate Trihydrate is produced under a stringent quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise chemical and physical specifications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles 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). This product is hygroscopic (moisture-sensitive) and must be kept in a dry environment to prevent caking and decomposition. Keep away from strong acids.

Specification

Item	Specification
Appearance	White crystalline powder
Identification (IR)	Conforms
Assay (K2SnO3·3H2O)	≥ 98.0 %
Tin (Sn) Content	≥ 39.0 %
Potassium (K) Content	Contact for details
Insoluble Matter	≤ 0.1 %
Chloride (Cl)	≤ 0.01 %
Sulfate (SO4)	≤ 0.01 %
Heavy Metals (as Pb)	≤ 0.002 %
Iron (Fe)	≤ 0.005 %
Loss on Drying	Contact for details

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