Professional Zinc Alloy Surface Finishing Solutions
Stannous Sulfate
Stannous Sulfate
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Estimated Delivery:Oct 02 - Oct 06
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Free Shipping & Returns: On all orders over $75
Product description
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Product Overview
Stannous Sulfate 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 | Stannous Sulfate |
| Chemical formula | SnSO4 |
| CAS number | 7488-55-3 |
| Appearance | Off-white to light grey 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. Stannous sulfate is the tin source of the acid tin plating bath - the fastest and brightest tin electrolyte, used for plating hardware and for solderable coatings.
- Off-white powder, soluble in dilute sulfuric acid; tin is present as Sn(II) and oxidises slowly to Sn(IV) in the bath.
- The acid bath gives a bright, dense tin deposit on a 60-100 g/L sulfuric acid base with organic additives.
- A continuous anode-tin feed and regular addition of the salt keep the divalent tin where it should be.
Typical Use in a Plating / Finishing Line
| Item | Typical guidance |
|---|---|
| Acid tin bath | 40-60 g/L SnSO4 with 60-100 g/L H2SO4 |
| Operating temperature | 15-25 C |
| Cathode current density | 1-5 A/dm2 |
| Control | Tin by titration, sulfuric acid by titration, iron by AAS |
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 |
|---|---|
| Why does the bath turn cloudy? | Usually tin(IV) oxidation; treat with granular tin and filter, or add a proprietary reducing agent. |
| Which anodes should be used? | Pure tin anodes in bagged anode baskets. |
| Product Name | Stannous Sulfate |
| 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. |
Related Reading
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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.
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