H2C2O4·2H20 Oxalic Acid On Metal CAS 6153-56-6 White Powder
Product Description
H2C2O4*2H20 High Quality Oxalic Acid White Crystal Particle Effective Derusting
Product Specifications
| Attribute |
Value |
| CAS |
6153-56-6 |
| EINECS |
205-634-3 |
| Crystalline hydrate |
Oxalic acid dihydrate |
| Appearance |
White Powder |
| Acidity |
Medium acid |
| Solubility |
Water |
Key Attributes
- Chemical formula: C2H2O4*2H2O
- CAS: 6153-56-6
- Purity: 99.6%
Production Standard
COA need meets GB/T1626-2008:
| No. |
Items for detecting and analyzing |
Standard value |
| 1 |
Oxalic acid content (C2H2O4)％≥ |
99.6 |
| 2 |
Sulfide (as SO4) ％≤ |
0.07 |
| 3 |
Combustion residue ％≤ |
0.01 |
| 4 |
Heavy metal (as Pb) ％≤ |
0.0005 |
| 5 |
Fluoride (as Fe) ％≤ |
0.0005 |
| 6 |
Chlorine (as Cl) ％≤ |
0.0005 |
| 7 |
Calcium (as Ca) ％≤ |
0.0005 |
| 8 |
Water insoluble content ％≤ |
0.02 |
References: Riel Chemical Lab1&2, National public service platform for standards information.
Introduction to Oxalic Acid
Oxalic acid is a colorless, crystalline organic compound with the chemical formula C₂H₂O₄. It is a naturally occurring substance found in many plants, such as spinach and rhubarb, and is also produced industrially for various applications.
Key Properties
- Appearance: White crystalline solid
- Solubility: Highly soluble in water and alcohol
- Acidity: A strong organic acid, capable of forming salts known as oxalates
Industrial Production Methods
- Oxidation of Carbohydrates: Using nitric acid as an oxidizer
- Sodium Formate Method: A widely used industrial process involving carbon monoxide and sodium hydroxide
- Ethylene Glycol Oxidation: Catalyzed by nitric acid or air
- Biological Fermentation: Utilizing microorganisms like Aspergillus niger
Applications
- Cleaning Agent: Effective in removing rust and stains from metals
- Bleaching Agent: Used in textiles and wood industries
- Chemical Synthesis: A key raw material for dyes, pharmaceuticals, and other chemicals
- Rare Earth Extraction: Essential in separating and purifying rare earth elements
- Electroplating: Stabilizes metal ions in plating solutions
- Polishing Agent: Restores shine to marble and stone surfaces
Safety Considerations
Oxalic acid is toxic if ingested and can cause irritation to the skin and eyes. Proper handling and protective equipment are essential when working with this chemical.
Environmental Impact
While widely used, oxalic acid is biodegradable and considered environmentally friendly when managed responsibly. Oxalic acid's versatility and effectiveness make it a vital component in numerous industrial and commercial processes.
The Role of Oxalic Acid in Rust Removal
1. Rust Removal Principle
Chemical reaction: oxalic acid reacts with iron oxide (rust) on the surface of the metal to produce soluble iron oxalate and water, thereby removing rust.
Reaction equation: Fe₂O₃ + 6H₂C₂O₄ → 2Fe(C₂O₄)₃ + 3H₂O
2. Application Scenario
- Metal products: used to clean rust on the surface of iron, steel and other metal products
- Industrial equipment: Used to clean rust on the surface of industrial equipment and machinery
- Auto maintenance: Used to remove rust from auto body and parts
- Household items: Used to clean household metal items, such as tools, railings, etc.
3. Usage Method
- Preparation solution: the oxalic acid powder is mixed with water in a certain proportion, usually the concentration is 5%-10%
- Apply or soak: Apply the oxalic acid solution to the rusty surface, or soak the corroded item directly in the solution
- Reaction time: Depending on the severity of the rust, wait a few minutes to a few hours
- Scrubbing: Use a brush to scrub the rusty area to help remove the rust layer
- Rinse: Rinse thoroughly with clean water to remove residual oxalic acid and reaction products
- Drying: Wipe or air dry the metal surface to prevent re-rusting
4. Strengths
- High efficiency: Can quickly and effectively remove rust
- Economy: Low cost, easy access
- Multifunctional: Suitable for a variety of metals and different shapes of items
5. Precautions
- Safety: Wear gloves and goggles when using, avoid contact with skin and eyes
- Ventilation: Maintain ventilation to avoid inhalation of steam
- Concentration control: Avoid using too high concentration of oxalic acid solution to prevent corrosion of metal
- Rinse thoroughly: Ensure thorough flushing to prevent residual oxalic acid from corroding the metal
Frequently Asked Questions
1. What is your payment term?
We can accept T/T and L/C at sight as payment term.
2. Are you able to deliver on time?
Of course! We specialized in this line for many years, many customers make a deal with us because we can deliver the goods on time and keep the goods top quality!
3. Do you provide free sample?
Yes, we can provide free sample. You only need to take the express fee.
4. How about the price? Can you make it cheaper?
We always take the customer's benefit as the top priority. Price is negotiable under different conditions, we are assuring you to get the most competitive price.
5. Can I visit your company and factory in China?
Sure. You are very welcomed to visit our company in Weifang, China. (We will have someone responsible for picking up and dropping off at Weifang Airport)
6. What if there is a quality problem?
We have a professional and perfect after-sales service team, timely for you to deal with all problems.
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