Product Overview
Steel Phosphating Solution 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 | Steel Phosphating Solution |
| Chemical formula | Zinc / manganese phosphate acid solution |
| CAS number | Mixture |
| Appearance | Pale green to colourless clear liquid |
| Grade / type | Zinc phosphating bath |
| Standard packing | 25 L HDPE jerry can; 200 L plastic drum |
What it is and what it does. Steel phosphating solution is the ready-to-use zinc phosphating bath that converts a steel surface into a crystalline phosphate layer, giving corrosion protection and an excellent key for paint or lacquer.
- Pale green to colourless liquid, used at 3-10% in water with the accelerator included.
- The phosphate coating also improves the adhesion of electrophoretic and spray coatings on hardware.
- Control is by the free acid to total acid ratio plus the bath temperature - both are simple titrations.
Typical Use in a Plating / Finishing Line
| Item | Typical guidance |
|---|
| Immersion phosphating | 3-10% at 50-70 C for 5-15 minutes |
| Spray phosphating | As specified by the equipment |
| Control | Free acid, total acid and temperature on every shift |
Safety, Handling & Storage
| Item | Requirement |
|---|
| Hazard classification | Corrosive (GHS05) — causes severe skin burns and eye damage |
| Personal protective equipment | Face shield + chemical goggles, acid-resistant gloves (nitrile/PVC), rubber apron and boots; local exhaust ventilation |
| Spill / first aid | Neutralise carefully with sodium carbonate or lime, then collect with inert absorbent; never add water to the concentrate |
| Storage | Store in original HDPE/PP containers, upright, in a cool ventilated area away from alkalis, cyanides, oxidisers and metals; bunded floor recommended |
| 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 is the coating powdery? | Usually too high a free acid or too long a time; bring the ratio back into the specified band. |
| Does it need a seal rinse? | Yes, a post-treatment rinse (chromium-free or passivating) improves the corrosion result. |
| Product Name | Steel Phosphating Solution |
| 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.
