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Anhydrous Oxalic Acid 99.5% Content for Bleaching Agent and Rare Earth Extraction | H₂C₂O₄
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Anhydrous Oxalic Acid 99.5% Content for Bleaching Agent and Rare Earth Extraction | H₂C₂O₄
| MOQ: | 10Tons |
| Price: | Please contact customer service |
| Standard Packaging: | Bagged |
| Delivery Period: | About six weeks |
| Payment Method: | T/T,L/C,D/A,D/P,Western Union,MoneyGram |
| Supply Capacity: | 100,000 tons per year |
Detail Information
Place of Origin
China
Brand Name
SiChuan HongJian
Model Number
Oxalic acid
Document
Molecular Formula:
H₂C₂O₄
Content:
99.5%
Packing Specification:
25KG
Scope Of Use:
Reducing Agent, Bleach, Etc
Highlight:
99.5% content Oxalic Acid
,Bleaching Agent Oxalic Acid
,Rare Earth Extraction H₂C₂O₄
Product Description
Oxalic Acid Anhydrous | Bleaching Agent & Rare Earth Extraction
Alias:
Ethylene Glycolic Acid
English Name:
Oxalic acid
Chemical Formula:
H₂C₂O₄
Molecular Weight:
90.04
CAS:
144-62-7
Product Introduction
Oxalic Acid Anhydrous represents the most concentrated form of this versatile dicarboxylic acid, completely free from water of crystallization. This premium-grade chemical serves as an indispensable bleaching agent in multiple industries and a critical reagent in rare earth extraction processes. With its higher acidity and reactivity compared to the dihydrate form, anhydrous oxalic acid (H₂C₂O₄) offers superior performance in applications where water content must be minimized.
The manufacturing process involves careful dehydration under controlled conditions to prevent decomposition, resulting in a product with exceptional purity and chemical stability. Our anhydrous oxalic acid undergoes rigorous quality control, including Karl Fischer titration to confirm minimal moisture content and spectroscopic analysis to verify chemical structure integrity.
Bleaching Agent Applications
Oxalic acid's role as a bleaching agent leverages both its reducing properties and metal-chelating capabilities. In the textile industry, it serves as a critical component in "oxalic acid bleaching" or "reductive bleaching" processes, particularly for protein fibers like wool and silk.
- Gently removes natural yellowish tints through reduction of colored chromophores
- Simultaneously chelates iron and other metal ions that contribute to discoloration
- Ideal for restoring antique textiles and maintaining brightness in luxury fabrics
- Controls brightness reversion in pulp and paper manufacturing
- Effective for wood bleaching of hardwoods like oak and maple
The anhydrous form's concentration advantage allows for more compact formulation and reduced transportation costs in industrial bleaching operations. Modern environmental considerations further enhance oxalic acid's appeal as it breaks down into naturally occurring compounds without generating persistent pollutants.
Rare Earth Extraction Applications
The rare earth extraction industry depends critically on oxalic acid's unique precipitation chemistry for separating and purifying rare earth elements (REEs). These technologically essential metals exhibit remarkably similar chemical properties that make separation exceptionally challenging.
- Forms insoluble oxalate salts with exceptional selectivity over common impurity metals
- Anhydrous form preferred due to higher chemical purity and absence of water
- pH-dependent precipitation allows sequential separation of different rare earth groups
- Simplifies subsequent solvent extraction processes, reducing chemical consumption
- Key reagent for recovering valuable rare earths and cobalt from spent batteries
Technical Specifications & Quality
| Parameter | Specification |
|---|---|
| Assay (Minimum) | 99.8% |
| Sulfate Content | Below 0.01% |
| Chloride Content | Under 0.001% |
| Heavy Metals (as Pb) | Less than 5 ppm |
The crystalline structure exhibits uniform particle size distribution optimized for both dissolution rate and dust control. Storage recommendations emphasize cool, dry conditions in sealed containers to prevent moisture absorption and caking.
Additional Industrial Applications
Beyond its primary roles, anhydrous oxalic acid finds applications in chemical synthesis as a reducing agent and precursor for oxalate esters, in catalyst manufacturing for producing cobalt oxalate used in petroleum refining, and in pharmaceutical synthesis as an intermediate for certain antibiotics and antiviral drugs.
The absence of water molecules makes it particularly valuable in organic synthesis where water could interfere with reaction mechanisms or promote hydrolysis. Our technical support extends to application-specific guidance, including precipitation stoichiometry calculations, filtration optimization, and waste management strategies.
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