Product Overview
Oxalic Acid is a professional acid & solvent supplied by QLQ for zipper, hardware and metal-finishing plants. Standard packing: 25KG/BAG. 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 | Oxalic Acid |
| Chemical formula | C2H2O4·2H2O |
| CAS number | 6153-56-6 |
| Appearance | White crystalline solid |
| Grade / type | Technical 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. Oxalic acid is the classic iron-removal and derusting acid, used to strip rust and heat scale from steel, to remove iron staining from plating racks, and in the colouring of stainless and aluminium surfaces.
- White crystals; a strong organic acid for its class, and a serious poison - it binds calcium in the body.
- Used at 5-10% in water at 40-70 C for derusting; an inhibitor is added when the base metal must be protected.
- Its iron complex is light-sensitive, which is why bath life is limited.
Typical Use in a Plating / Finishing Line
| Item | Typical guidance |
|---|
| Derusting and scale removal | 50-100 g/L at 40-70 C for 5-20 minutes |
| Rack stripping | As required, with an inhibitor |
| Analysis | Titration with permanganate |
Safety, Handling & Storage
| Item | Requirement |
|---|
| Hazard classification | Irritant (GHS07) — causes serious eye irritation |
| Personal protective equipment | Safety goggles and acid-resistant gloves; dust mask when handling powder |
| Spill / first aid | Sweep up dry powder, or dilute and neutralise small liquid spills, then rinse to the effluent treatment system |
| Storage | Cool, dry, ventilated store; keep sealed against moisture, away from alkalis and oxidisers |
| 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 |
|---|
| Can it be used on stainless steel? | It is used for cleaning and passivation support, but residues must be rinsed thoroughly - oxalate can leave a film. |
| Is an inhibitor necessary? | On carbon steel yes, otherwise the acid attacks the base metal as well as the rust. |
| Product Name | Oxalic Acid |
| Category | Acid & Solvent |
| Standard Packing | 25KG/BAG |
| Net Weight | 25 KG per bag |
| Appearance | Clear to pale yellow liquid |
| 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 | Woven bag with PE liner |
| 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.
