Sodium stannate

Sodium stannate

Sodium Hexahydroxo Stannate; Soda Stannate Trihydrate

CAS 12058-66-1

Chemical Formula Na₂SnO₃•3H₂O

Molecular Weight 266.73 g/mol

Sodium stannate is an inorganic compound with the chemical formula Na₂SnO₃•3H₂O, often appearing as white to light tan crystals. It's primarily used as a salt in alkaline tin plating electrolytes and as a stabilizer for hydrogen peroxide. Additionally, it serves as a mordant in dyeing, a fireproofing agent in textiles, and a component in glass and ceramics. 

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Industrial Uses

1. Metal Treatment

  • Electroplating: Sodium stannate is used in alkaline tin plating baths to deposit a tin coating on various metal surfaces. This tin coating enhances corrosion resistance and provides a decorative finish. Sodium stannate is used as a raw material for white bronze plating.

2. Construction

  • Corrosion inhibitor: Sodium stannate acts as a corrosion inhibitor for steel reinforcement in concrete by forming a protective layer on the steel surface, which helps prevent corrosion caused by factors like chloride ingress and carbonation. It achieves this by reacting with calcium in the concrete to create a stable, complex layer that hinders the corrosive effects of aggressive ions.

3. Water Treatment

  • Precipitation: Sodium stannate (Na₂SnO₃) removes heavy metals from wastewater through precipitation, which involves converting dissolved metal ions into insoluble solid particles called precipitates.

4. Performance Chemicals

  • Source of Tin Ions: Sodium stannate readily dissociates in solution, providing tin ions (Sn⁴⁺) that can participate in various chemical reactions. 
  • Precursor to Tin Compounds: It's used to synthesize other tin-containing compounds, including various organic and inorganic compounds, expanding its application in different chemical processes. 
  • Catalyst: In certain reactions, particularly in organic synthesis, sodium stannate can act as a catalyst, facilitating the reaction and increasing its rate. 
  • Stabilizer for Hydrogen Peroxide: Sodium stannate can stabilize hydrogen peroxide solutions, preventing their decomposition and extending their shelf life.

5. Fabric Solutions

  • Mordant: Sodium stannate acts as a mordant, helping dyes bind to textile fibers, resulting in vibrant and durable colors.
  • Fire Retardant: In some textile applications, sodium stannate is used to impart fire-resistant properties to fabrics.

6. Pulp & Paper Solutions

  • Hydrogen Peroxide Stabilization: Sodium stannate is used to stabilize hydrogen peroxide in bleaching solutions. Hydrogen peroxide can decompose, especially in alkaline conditions, releasing oxygen and reducing its bleaching effectiveness. Sodium stannate helps to control this decomposition, ensuring a longer-lasting and more potent bleaching agent.

Specifications

Assay 95%
Appearance White crystalline powder or granules
Odor Odorless
Boiling Point Decomposes before boiling
Melting Point Not determined
Density 2.8 g/cm3
Solubility Soluble in water; forms alkaline solutions
Viscosity Not applicable
Flash Point Not flammable

FAQs

1. What is the current price of Sodium stannate in India?
The price of Sodium stannate can vary based on factors such as purity, quantity, etc. For the most accurate and competitive pricing, please contact us at +91.6301 00 6301 directly for a customized quote tailored to your needs.

2. Where can I buy Sodium stannate in India?
You can purchase Sodium stannate from MULTICHEM, a leading exporter with a reputation for quality and reliability. We provide convenient options for bulk orders and direct shipments across global markets. For more details on how to place an order, please visit our website or contact our sales team.

3. What is the minimum order quantity (MOQ) for Sodium stannate? 
Our minimum order quantity (MOQ) for Sodium stannate is designed to cater to both small-scale and large-scale needs. The MOQ depends on the packing size of the product which could range from 25 kg to 250kg.

4. How can I ensure the quality of Sodium stannate supplied by Multichem?
We adhere to stringent quality control processes to ensure that our products meet the highest standards of purity and effectiveness. They undergo rigorous testing and quality checks to guarantee that they comply with industry specifications. We provide a Certificate of Analysis (CoA) with every shipment to ensure transparency and quality assurance.