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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
Cas 6153-56-6 ≥ 99.6% Oxalic Acid Dihydrate For Auxiliaries For Dye Industry
| Place of Origin | Weifang |
|---|---|
| Brand Name | Riel Chemical |
| Certification | SGS,9001,ISO |
| Model Number | 99.6% |
| Minimum Order Quantity | 1 Tons |
| Price | USD 350/TONS FOB |
| Packaging Details | 25kg polyethylene woven bag,moisture-proof,easy to transport. |
| Delivery Time | 5 works day |
| Payment Terms | L/C, T/T |
| Supply Ability | 50 Tons per day |
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WhatsApp:0086 18588475571
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xProduct Details
| CAS | 6153-56-6 | EINECS NO | 205-634-3 |
|---|---|---|---|
| Crystalline Hydrate | 2 Water Crystals | Shelf Life | 2 Years |
| Appearance | White Crystal Particle | Brand Name | Riel Chemical |
| Packing | 25kg PP Bag | ||
| Highlight | 6153-56-6 oxalic acid,6153-56-6 acid dihydrate,auxiliaries oxalic acid |
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| 20 GP Container | Maximum load (tons) | |
|---|---|---|
| With tray | 22 | |
| No tray | 25 |
Product Description
Oxalic Acid Dihydrate (CAS 6153-56-6) ≥ 99.6% for Dye Industry Auxiliaries
Product Specifications
| Attribute | Value |
|---|---|
| CAS | 6153-56-6 |
| EINECS NO | 205-634-3 |
| Crystalline hydrate | 2 Water crystals |
| Shelf Life | 2 years |
| Appearance | White crystal particle |
| Brand Name | Riel Chemical |
| Packing | 25kg PP Bag |
Chemical Properties
- Chemical formula: C₂H₂O₄*2H₂O
- Purity: 99.6%
- Molecular weight: 126.07 g/mol
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.
Physicochemical Properties
| 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 lost its crystalline water at 101-102°C and was converted to anhydrous oxalic acid (H₂C₂O₄). Anhydrous oxalic acid sublimates at about 189.5°C and decomposes at high temperatures. |
| Solubility: Water: soluble in cold water (about 10 g/100 mL, 20°C), hot water solubility is higher. Ethanol: slightly soluble (approx. 5.7g /100 mL, 20°C) |
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| Chemical Properties: - Binary acid, acidic stronger than acetic acid (pKa₁=1.25, pKa₂=4.14) - Can react with bases, metal oxides, carbonates to form salts - Under acidic conditions can be oxidized by strong oxidants - Forms soluble complexes with metal ions - Decomposition when heated above 150°C |
|
Industrial Applications
1. Industrial Cleaning
Oxalic acid effectively removes oxides, rust and scale on metal surfaces.
- Metal cleaning: For steel, copper, aluminum and other metals
- Equipment maintenance: Cleaning boilers, heat exchangers and pipes
- Stone cleaning: Removes stains and rust spots on marble and granite
2. Bleaching Agent
- Textile industry: Bleaching natural fibers like cotton
- Wood industry: Removing surface stains and discoloration
- Paper industry: Improving paper whiteness
3. Chemical Reagents
- Chemical analysis: Detection and analysis of metal ions
- Organic synthesis: Intermediate in various chemical reactions
4. Rust Removal
- Metal processing: Rust removal and maintenance
- Equipment maintenance: Cleaning industrial equipment
5. Pharmaceutical Industry
- Drug synthesis: Intermediate for antibiotics and vitamins
- Laboratory reagents: Pharmaceutical research and analysis
6. Food Industry
Used as additive for bleaching sugar and food preservation (with strict quantity control).
7. Wood Treatment
- Furniture manufacturing: Bleaching and cleaning wood
- Woodwork maintenance: Repair and maintenance of woodwork
Frequently Asked Questions
What is your payment term?
We accept T/T and L/C at sight as payment terms.
Are you able to deliver on time?
We specialize in this product line with many years of experience. Our customers choose us because we consistently deliver on time while maintaining top quality.
Do you provide free samples?
Yes, we provide free samples. Customers only need to cover the express fee.
How about the price? Can you make it cheaper?
Customer benefit is our top priority. Prices are negotiable under different conditions, and we guarantee the most competitive pricing.
Can I visit your company and factory in China?
You are welcome to visit our company in Weifang, China. We provide airport pickup and drop-off services at Weifang Airport.
What if there is a quality problem?
We have a professional after-sales service team to promptly address any issues.
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