Description

Sodium Stannate Trihydrate is an important inorganic tin compound widely used as a precursor and catalyst in various industrial processes. Its primary value lies in its role as a controlled source of stannate ions, which are essential for electroplating and surface treatment applications. This product is a critical raw material for manufacturers in the metal finishing, glass, ceramics, and catalyst formulation industries seeking consistent quality and reliable supply.

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.
• Glass and Ceramic Manufacturing: Used as an opacifier and to impart specific electrical properties in the production of specialty glasses, enamels, and ceramic glazes.
• Catalyst Preparation: Serves as a precursor for synthesizing heterogeneous catalysts used in organic synthesis and industrial chemical processes.
• Textile Treatment: Employed in flame-retardant and weight-increasing treatments for textiles and fabrics.
• Intermediate for Other Tin Chemicals: Acts as a starting material for the production of other tin-based compounds, such as stannous chloride and organotin derivatives.
• Paper and Polymer Additives: Utilized in certain paper coating formulations and as a stabilizer or catalyst in specific polymer reactions.

Basic Information

Product Name	Sodium Stannate Trihydrate
CAS No.	12209-98-2
Molecular Formula	Na2SnO3 · 3H2O
Molecular Weight	266.73 g/mol
Synonyms	Sodium stannate(IV) trihydrate; Disodium trioxostannate trihydrate; Stannic acid, disodium salt, trihydrate; Tin sodium oxide trihydrate; Sodium metastannate trihydrate; Sodium tin oxide trihydrate; Sodium hexahydroxystannate(IV)
EINECS	235-380-4 (for the anhydrous form)

Quality Control

Our Sodium Stannate Trihydrate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets defined specifications for purity, tin content, and impurity levels. We provide comprehensive Certificates of Analysis (COA) with every shipment, detailing key parameters to guarantee batch-to-batch consistency and performance for your application.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area. This material is hygroscopic (moisture-sensitive) and must be kept in a sealed container to prevent absorption of atmospheric moisture and CO2, which can lead to caking and degradation. Recommended storage temperature is 15-25°C.

Specification

Item	Specification
Appearance	White crystalline powder or granules
Identification (IR)	Conforms
Assay (as Na2SnO3·3H2O)	≥ 98.0 %
Tin (Sn) Content	≥ 42.0 %
Insoluble Matter	≤ 0.5 %
Chloride (as Cl)	≤ 0.1 %
Sulfate (as SO4)	≤ 0.1 %
Heavy Metals (as Pb)	≤ 0.01 %
Iron (Fe)	≤ 0.01 %

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