All Products
-
Ahmed KhanI'm a trader from Pakistan. I have bought sodium hempetaphosphate with Manager Hu and worked with him for 3 times. THKs Hu, now I have become a local agent. Riel Chemical is indeed a trusted partner. Highly recommended for friends who need high quality chemical products. -
Maria J GarciaOverall, I was impressed. Whether it is product details or service response speed, it is done very well, and customers are satisfied. Warmly tips: Could you guys add more payment methods？that would be great. -
LabrekeoLa vitesse de livraison est très satisfaisante et presque aucune inquiétude. Chaque fois que la coopération fonctionne sans à-coup. Recommandez sincèrement à d’autres acheteurs! -
محمد لاگولدشریک خوب، پیدا کردن چنین تامین کننده ای عالی است، برای شما آرزوی موفقیت دارم -
JackThe cooperation with Riel Chemical Co., Ltd. is our most sensible choice. Your team's efficiency, professionalism and innovative spirit are impressive, and we are looking forward to further cooperation in the future! -- Jack Sales manager -
ອາ ລິ ສໄປ ຈົນ ສຸດ ຂີດ, ຂອບ ໃຈ ຫລາຍໆ ທີ່ ມີ ທ່ານ! ບໍ່ ວ່າ ຈະ ເປັນ ການ ສະຫນັບສະຫນູນ ຢ່າງ ເຕັມທີ່ ໃນ ເວລາ ທີ່ ສໍາຄັນ ຫລື ການ ເອົາ ໃຈ ໃສ່ ຢ່າງ ລະມັດລະວັງ ຕໍ່ ລາຍ ລະອຽດ ຂອງ ການ ຮັບ ໃຊ້ ປະຈໍາ ວັນ, ເຮົາ ຮູ້ສຶກ ວ່າ ໄດ້ ຮັບ ຄວາມ ໄວ້ ວາງ ໃຈ. ຂໍ ໃຫ້ ມິດຕະພາບ ຍືນ ຍົງ ຕະຫລອດ ໄປ ແລະ ການ ຮ່ວມ ໄມ້ ຮ່ວມ ມື ຈະ ຍືນ ຍົງ ຕະຫລອດ ໄປ ——[ທີມການຄ້າເຄມີຂອງລາວ] -
Mr. ZhaoWe have been cooperating with Riel Chemical for five years. The product quality has always been perfect and the usage effect is good. Your company's sales manager is also particularly polite
99.6% High Purity Oxalic Acid Crystal For Metal Cleaning
| Place of Origin | Weifang |
|---|---|
| Brand Name | Riel Chemical |
| Certification | SGS,ISO9001,CE |
| Model Number | 99.6% |
| Document | GB:T_1626-2008 .pdf |
| Minimum Order Quantity | 1 ton |
| Price | USD 350~400/TONS FOB |
| Packaging Details | 25 kg polyethylene woven bag, moisture-proof, easy to transport |
| Delivery Time | 5 work day |
| Payment Terms | L/C,T/T |
| Supply Ability | 50 tons per day |
Contact me for free samples and coupons.
WhatsApp:0086 18588475571
Wechat: 0086 18588475571
Skype: sales10@aixton.com
If you have any concern, we provide 24-hour online help.
xProduct Details
| CAS | 6153-56-6 | EINECS | 205-634-3 |
|---|---|---|---|
| UN | 3261 | PubChem | 971 |
| Appearance | White Crystal Particle | Grade Standard | Industrial Grade |
| Purity | ≥99.6% | Size | 25kg Per Bags/1000kg Per Bags |
| Another Namer | Ethanedioic Acid | Solubility | Solubility 9.5g/100g Water (20℃) |
| Chemistry | Strong Reducing Property | Stock | Seal And Store In A Cool, Dry Place. |
| Highlight | 99.6% Metal cleaning Oxalic Acid,Metal cleaning Oxalic Acid Crystal,High Purity Oxalic Acid Crystal |
||
You can tick the products you need and communicate with us in the message board.
| 20 GP Container | Maximum load (tons) | |
|---|---|---|
| With tray | 22 | |
| No tray | 25 |
Product Description
99.6% High Purity Oxalic Acid Crystal for Metal Cleaning
Product Specifications
| Attribute | Value |
|---|---|
| CAS | 6153-56-6 |
| EINECS | 205-634-3 |
| UN | 3261 |
| PubChem | 971 |
| Appearance | White crystal particle |
| Grade Standard | Industrial Grade |
| Purity | ≥99.6% |
| Size | 25kg per bags/1000kg per bags |
| Alternative Name | Ethanedioic acid |
| Solubility | 9.5g/100g water (20℃) |
| Chemistry | Strong reducing property |
| Storage | Seal and store in a cool, dry place |
Key Attributes
- Chemical formula: C₂H₂O₄*2H₂O
- CAS: 6153-56-6
- Purity: 99.6%
Production Standard (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.
Product Introduction
Oxalic acid is an organic acid with the systematic name ethanedioic acid and chemical formula HO−C(=O)−C(=O)−OH, also written as (COOH)2 or (CO2H)2 or H2C2O4. It is the simplest dicarboxylic acid. It is a white crystalline solid that forms a colorless solution in water.
Its name is derived from early investigators who isolated oxalic acid from flowering plants of the genus Oxalis, commonly known as wood-sorrels. It occurs naturally in many foods. Excessive ingestion of oxalic acid or prolonged skin contact can be dangerous.
Physicochemical Properties
- Molecular weight: 126.07 g/mol
- Appearance: White transparent crystal or powder (industrial products may be slightly yellow due to impurities)
- Odor: Tasteless or slightly sour
- Density: 1.65 g/cm³ (20°C)
- Melting point: The dihydrate loses crystalline water at 101-102°C, converting to anhydrous oxalic acid (H₂C₂O₄)
- Solubility: Water soluble (about 10 g/100 mL at 20°C), higher solubility in hot water; slightly soluble in ethanol
- Acidity: Stronger than acetic acid (pKa₁=1.25, pKa₂=4.14)
- Reducibility: Can be oxidized by strong oxidants under acidic conditions
- Complexation: Forms soluble complexes with metal ions (e.g., Fe³+, Al³+)
Manufacturing Process
Oxalic acid is produced primarily by oxidizing carbohydrates or glucose with nitric acid or air in the presence of vanadium pentoxide. Another method is to regenerate nitric acid using oxygen, using a variety of precursors, including glycolic acid and glycol.
A newer method requires oxidative carbonylation of alcohols to obtain dioxalate. These diesters are then hydrolyzed to oxalic acid. About 120,000 tons are produced annually.
Applications
The main uses of oxalic acid include cleaning or bleaching, especially for rust removal (iron complexing agent). Its use in rust remover is due to the fact that it forms a stable water-soluble salt with trivalent iron, namely the iron oxalate ion.
Oxalic acid is an ingredient in some teeth whitening products. About 25% of oxalic acid is used as a mordant in the dyeing process. It is also used in bleach, especially for pulping wood, cork, straw, rattan, feathers, as well as for rust removal and other cleaning applications.
Effect of Oxalic Acid on Different Metals
Metals prone to corrosion (Use oxalic acid with caution):
- Iron, carbon steel, common steel: Can cause surface corrosion, especially in humid environments
- Aluminium and aluminium alloys: Can corrode surface, forming porous oxide layer
Relatively corrosion-resistant metals (still with caution):
- Stainless steel (304/316): Short-term exposure to dilute oxalic acid is usually safe
- Copper and copper alloys: Will react to form green copper oxalate
Metals resistant to oxalic acid:
- Titanium, nickel, chromium: High stability in oxalic acid
Safety Usage Recommendations
- Control concentration: 3% to 10% solution is commonly used in industrial cleaning
- Shorten contact time: Rinse immediately with plenty of water after cleaning
- Add corrosion inhibitors: Such as hexamethylenetetramine (urotropine)
- Protective measures: Wear acid-resistant gloves and goggles, operate in well-ventilated areas
Frequently Asked Questions
What is your payment term?
We can accept T/T and L/C at sight as payment term.
Are you able to deliver on time?
Of course! We specialize in this line for many years, with many customers choosing us because we consistently deliver goods on time while maintaining top quality.
Do you provide free samples?
Yes, we can provide free samples. You only need to cover the express fee.
How about the price? Can you make it cheaper?
We always prioritize customer benefits. Price is negotiable under different conditions, and we assure you the most competitive price.
Can I visit your company and factory in China?
Sure. You are very welcome to visit our company in Weifang, China. (We will arrange airport transfers at Weifang Airport)
What if there is a quality problem?
We have a professional and comprehensive after-sales service team to promptly address any issues.
Recommended Products