Product Overview
Sodium Stannate is a professional plating salt supplied by QLQ for zipper, hardware and metal-finishing plants. Standard packing: 25KG/DRUM. Regular supply for customers in Bangladesh, Pakistan, India and other markets, with export-standard packing and documentation.
Product Identity (Encyclopaedia Card)
| Property | Value |
|---|
| Chemical name | Sodium Stannate |
| Chemical formula | Na2SnO3·3H2O |
| CAS number | 12058-66-1 |
| Appearance | White crystalline powder |
| Grade / type | Electroplating grade |
| Standard packing | 25 kg PP woven bag or kraft paper bag with PE inner liner; 25 kg fibre drum |
What it is and what it does. Sodium stannate is the tin source of the alkaline tin plating bath, used for tin coatings on hardware that has to be solderable and on steel that must resist corrosion.
- White powder that dissolves in sodium hydroxide to give the alkaline stannate electrolyte.
- The alkaline bath throws well into recesses and gives a matte to bright tin layer; it is far less corrosive to steel racks than acid tin.
- Carbonate builds up in the bath and is removed by chilling or by carbonate precipitation.
Typical Use in a Plating / Finishing Line
| Item | Typical guidance |
|---|
| Alkaline tin bath | 60-100 g/L sodium stannate with 10-20 g/L NaOH |
| Operating temperature | 70-90 C with mild agitation |
| Cathode current density | 2-8 A/dm2 |
| Anodes | Pure tin anodes with anode bags |
Safety, Handling & Storage
| Item | Requirement |
|---|
| Hazard classification | Not classified as dangerous for transport in most cases; observe good industrial hygiene and dust control |
| Personal protective equipment | Dust mask, goggles and gloves for powder handling; general ventilation |
| Spill / first aid | Sweep up dry; material is a nuisance dust — avoid breathing the dust |
| Storage | Cool, dry, sealed store; keep bags closed, off the floor and away from moisture |
| Transport | Classified and packed according to IATA/IMDG for the hazard class; UN number and packing group stated on the shipping documents |
Quality Documents Shipped With Every Batch
| Document | Comment |
|---|
| COA (certificate of analysis) | Provided with the shipment; batch traceable to the production date |
| MSDS (safety data sheet) | Provided with the shipment; batch traceable to the production date |
| Packing list | Provided with the shipment; batch traceable to the production date |
| Commercial invoice | Provided with the shipment; batch traceable to the production date |
| Certificate of origin on request | Provided with the shipment; batch traceable to the production date |
Buyer Questions We Answer Every Week
| Question | Answer |
|---|
| What tin content should the bath be run at? | Typically 20-30 g/L of tin metal; the exact target depends on the agitation available. |
| Is the deposit solderable? | Yes, alkaline tin deposits are widely used where solderability matters. |
| Product Name | Sodium Stannate |
| Category | Plating Salt |
| Standard Packing | 25KG/DRUM |
| Net Weight | 25 KG per drum |
| Appearance | White to off-white crystalline powder or granules |
| MOQ | 1 drum / 1 bag |
| Delivery | 7-15 days after payment confirmation |
Key Specifications
| Item | Value |
|---|
| Purity / Assay | Industrial grade, COA available on request |
| Packaging Material | Plastic drum, sealed |
| Shelf Life | 12 months in sealed original packing |
| Origin | China |
| Documents | COA, MSDS, packing list, commercial invoice |
Packing & Storage
| Condition | Requirement |
|---|
| Temperature | 5-35 °C, away from direct sunlight |
| Humidity | Dry, ventilated warehouse; keep sealed against moisture |
| Stacking | Max 4 layers for drums, follow pallet markings for bags |
| Shelf Check | FEFO - first expired, first out |
Precautions
- Wear chemical-resistant gloves and safety goggles when handling
- Read MSDS before first use; keep away from incompatible materials
- Spill: collect with inert absorbent, do not wash into drains
- Store locked, out of reach of untrained personnel
FAQ
| Question | Answer |
|---|
| Can you provide COA / MSDS? | Yes, COA and MSDS are provided with every shipment. |
| What is the MOQ? | MOQ is 1 bag / 1 drum. Mixed loading of different chemicals is accepted. |
| Do you provide dosing guidance? | Yes, QLQ engineers provide free bath set-up and dosing consultation based on Hull-cell results. |
| How about shipping? | 7-15 days by sea or air depending on quantity and destination port. |
What Would You Like to Solve?
QLQ supplies the full line — equipment, chemistry and the working documents that make them run — to hardware and zipper factories in 60+ global markets. Contact us to discuss your application, or explore the complete solutions.
