Sodium Stannate Trihydrate CAS 12027-70-2 / 12209-98-2

What is Sodium Stannate Trihydrate?

Sodium Hexahydroxostannate (CAS 12027-70-2, also listed as CAS 12209-98-2) is an inorganic tin compound widely used as a source of stannate ions (SnO₃²⁻) in chemical formulations and surface treatments. It is typically supplied as Sodium Stannate Trihydrate, a white crystalline powder that is strongly alkaline, water-soluble, and highly reactive.

Due to its oxidizing, complexing, and catalytic properties, Sodium Stannate plays a critical role in electroplating, catalysts, ceramic coatings, corrosion inhibitors, and flame retardants. It is also used as a stabilizer in PVC and other polymers.

사양

항목	준
Sn	≥42%
Fe	≤0.02
Pb	≤0.002
로	≤0.001
Sb	≤0.0025
Free base (NaOH)	≤3.5
Nitrate (NO3)	≤0.1
Alkali insoluble	≤0.1

Applications of Sodium Stannate Trihydrate

1. Electroplating and Metal Finishing

Sodium Stannate Trihydrate is a key component in alkaline tin plating baths and tin alloy plating, providing uniform deposition and bright surface finish.
It acts as a complexing agent to maintain tin ion balance and improve coating quality in both decorative and protective plating.

2. Catalyst and Chemical Reagent

Used as a catalyst precursor and oxidizing agent in organic synthesis and industrial processes.
It can also function as a catalyst support in hydrogenation and oxidation reactions due to its stability and high reactivity.

3. Corrosion Inhibitors

In the coatings and metal protection industry, Sodium Stannate (CAS 12209-98-2) is used as an effective corrosion inhibitor for metals such as aluminum, zinc, and steel.
It forms a protective film on metal surfaces, enhancing resistance against oxidation and moisture.

4. Polymer Stabilizer

Sodium Hexahydroxostannate serves as a PVC heat stabilizer, preventing thermal degradation and discoloration during processing.
Its use extends to other polymers where tin-based stabilizers are preferred for durability and clarity.

5. Ceramic and Glass Industries

In ceramics and glass manufacturing, Sodium Stannate Trihydrate is used as a colorant and opacifier, enhancing whiteness and opacity. It can also be employed in electronic ceramics for dielectric and conductive layer formation.

특징

1. High Purity and Strong Alkalinity

Sodium Hexahydroxostannate is a high-purity tin-based compound with excellent stability and high alkalinity. It easily dissolves in water, forming a clear solution suitable for metal surface treatment and catalyst preparation.

2. Effective Source of Tin Ions

It provides a stable source of stannate ions (Sn⁴⁺), making it useful in oxidation-reduction reactions, plating baths, and catalyst systems.

3. Wide Range of Industrial Applications

Sodium Stannate is used across various industries including electronics, coatings, plastics, and ceramics, demonstrating excellent versatility and reactivity.

4. Available as Trihydrate Form

The Sodium Stannate Trihydrate (Na₂SnO₃·3H₂O) version offers better handling, easier dissolution, and higher stability for storage and transportation.

Why Choose Us as Your Sodium Stannate Supplier?

1. The content of harmful impurities ((Fe), (Pb), (As)) is far lower than the national standard, which avoids darkening, fogging, and streaking during the electroplating process, and reduces the corrosion resistance and weldability of the coating..

2. The content of Free alkali can be less than 0.5% (national standard ≤3.5), which is conducive to the stability of sodium stannate solution and avoids strong corrosiveness during use.

3. The raw material tin of our company is sourced from tin mines in Yunnan and Jiangxi provinces, which has a higher purity, greater hardness and better application effect of the products.

4. Compared with the products of other factories, our products have more stable performance and are less prone to caking.

5. Compared with the Sodium stannate trihydrate products from other domestic factories in China and those from abroad, our products have a stronger luster. This makes the products smoother, whiter and more lustrous for the ceramic manufacturing industry.

We ensure high-purity Sodium Stannate for industrial and laboratory use, meeting the needs of customers in metal finishing, chemical synthesis, and polymer stabilization.

Packaging

25kg/드럼