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A deep scientific exploration of Oxalic Acid (C₂H₂O₄) applications, chemical reactions, and manufacturing advantages for global bulk buyers.
Unlike chlorine or hydrogen peroxide-based bleaches that strip wood color by oxidizing natural pigments, Oxalic Acid (Ethanedioic Acid) acts primarily as a reducing agent. It targets iron-based stains (ferric tannate) formed when wood tannins react with metal hardware or rain. By reducing insoluble Fe³⁺ ions to highly soluble Fe²⁺ ions, the compound facilitates the complete rinse-off of dark discolored ions without compromising the structural integrity of cellulose fibers.
Oxalic acid is highly selective, making it the industry standard for specific hardwood restoration. It is highly effective on:
A critical step in industrial wood bleaching is the complete neutralization of residual oxalic acid. If left un-neutralized, the acidic substrate will degrade subsequent polyurethane, lacquer, or oil coatings. Exporters advise neutralizing with a mild base such as sodium bicarbonate (baking soda) or diluted ammonia, followed by a thorough rinse with clean water to reach a neutral pH substrate.
How Shandong Pulisi Chemical Co., Ltd. integrates upstream petrochemical resources to secure high-volume supply and optimized freight pathways.
China is home to the world's most integrated chemical manufacturing ecosystems. By locating our operations within the industrial heart of Shandong, Shandong Pulisi Chemical Co., Ltd. directly benefits from raw material pipeline integration. The synthesis of high-purity Oxalic Acid relies on raw carbon monoxide (CO) reacting with sodium hydroxide or through nitric acid oxidation of carbohydrates. Our direct access to primary petrochemical reagents guarantees uninterrupted manufacturing outputs and stable, volume-based pricing structures for global importers.
We maintain highly mature warehousing and distribution systems at key logistics hubs, including Qingdao Port, Tianjin Port, and Xinjiang border ports (Alashankou, Khorgos). These strategic nodes enable us to deliver flexible supply options. Whether importing via bulk chemical carriers or trans-continental rail routes, our supply chain ensures that shipment paperwork, customs declarations, and hazard classifications are prepared seamlessly.
| Oxalic Acid Parameter | Industrial Premium Grade | Standard Wood Bleach Grade | Testing Methods |
|---|---|---|---|
| Purity (C₂H₂O₄·2H₂O) | ≥ 99.6% | ≥ 99.0% | GB/T 1626-2008 |
| Sulfate (SO₄²⁻) | ≤ 0.05% | ≤ 0.1% | Turbidimetric Method |
| Iron Content (Fe) | ≤ 0.0015% | ≤ 0.005% | Spectrophotometry |
| Heavy Metals (Pb) | ≤ 0.001% | ≤ 0.002% | Atomic Absorption |
| Residue on Ignition | ≤ 0.08% | ≤ 0.12% | Gravimetric Method |
Shandong Pulisi Chemical Co., Ltd. — Focus on providing compliant, high-quality products and supporting services.
Shandong Pulisi Chemical Co., Ltd. was established in 2006 (Stock Code: 307785). The company focuses on petrochemicals, mining chemicals, feed chemicals, and pharmaceutical chemicals. At present, the company has established long-term and stable partnerships with Fortune Global 500 companies such as China National Petroleum Corporation and Saint-Gobain. We always take customer demand as the core orientation and provide tailored solutions to help customers strengthen their market competitiveness.
The company has passed ISO9001:2015 Quality Management System Certification and German BV Certification, and has been awarded multiple honors such as Foreign-Oriented Economic Enterprise, Alibaba Demonstration Base, and Contribution Enterprise. In 2023, the company successfully went public with stock code: 307785.
The company upholds the corporate culture philosophy of "Customer First, Rapid Response; Striving as the Foundation, Efficient Collaboration; Integrity and Uprightness, Agile Adaptation." We focus on providing compliant and high-quality products and supporting services, and are committed to becoming a long-term and stable partner for customers.
Meanwhile, the company has established mature warehousing and distribution systems at key logistics hubs, including Qingdao Port, Tianjin Port, and Xinjiang border ports (Alashankou, Khorgos). We are able to provide flexible supply solutions according to customer needs to ensure timely order delivery. No matter where customers are located, Shandong Pulisi Chemical will safeguard their business development with professional service systems and efficient response capabilities.
We always adhere to the mission of "creating value for customers and making their products better," based on reputation and guaranteed by service. We look forward to strengthening cooperation with partners to create a future together!
Strict Statement: Shandong pulisi has not established branches outside of Shandong Province. If there is any act of impersonating Shandong Pulisi, our company will reserve the right to pursue legal responsibilities.
Safeguarding your chemical imports with K-REACH, FAMI-QS, SGS, and regional hazardous material storage certifications.
Importing oxalic acid requires strict adherence to regional chemical frameworks. Our chemical products are fully registered under K-REACH (South Korea), and comply with the EU’s REACH standards. We support importers with official registration dossiers, ensuring compliance with local import limits and environment-protection thresholds.
We supply localized, multi-language Safety Data Sheets (SDS) in complete compliance with the Globally Harmonized System of Classification and Labelling of Chemicals (GHS). These sheets provide local regulatory teams with vital handling, storage (Class 8 corrosives), and emergency protocol details.
From reactor vessel to final packaging, every batch of chemical intermediates undergoes routine validation. Backed by SGS inspections and audited by German BV, our products ensure consistent chemical properties, reducing potential batch variations in automated wood treatment lines.
Our chemical intermediates support multiple heavy industries globally, offering high-efficiency processing and raw material consistency.
Chemicals For Textile, Printing & Dyeing & Leather
Agricultural Chemicals, Food And Feed Additives
Chemicals For Construction And Coatings
Chemicals For Mining
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Disinfectant And Solvent Chemicals
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Our products comply with international chemical standards, backed by SGS validations and ISO quality systems.
A trusted industrial-grade chemical developer with a 20+ year global supply chain track record.
We export to more than 100 countries and regions, ensuring seamless global logistics and compliant cross-border customs handling.
More than 20+ years of export experience, maintaining active and cooperative commercial relations with more than 1,000 corporate enterprises worldwide.
ISO Certification丨SGS certification丨K-REACH Registration Compliance丨FAMI-QS Feed Certification for complete batch reliability.
We always provide competitive, factory-direct prices based on volume metrics, custom formulations, and tailored container packaging.
We operate major dedicated warehouses at primary marine ports (Qingdao, Tianjin) to achieve fast turnaround and sea-freight booking cycles.
An efficient and professional sales support team provides prompt technical support, SDS coordination, and after-sales quality follow-ups.
Since 2006, we have established ourselves as a reliable raw material supplier for industrial and mining chemical sectors.
Comprehensive guide to chemical ordering, wood bleaching applications, and custom logistics support.
Of course you can. Just send us your logo design. We support private labeling, customizable packaging (e.g. 25kg, 500kg, 1000kg PP/PE bags), and regulatory-compliant labeling to match your local market's requirements.
If you are a small retailer or entrepreneur, we would absolutely love to grow with you. We look forward to building a long-term relationship with you. We can accommodate small LCL (Less than Container Load) orders to help validate your localized market demand.
We always put our customers' interests first. Prices are negotiable under different volume metrics and contract durations. We guarantee that you will receive the most competitive price by sourcing directly from our Shandong production base.
Yes, we provide free product samples (typically 500g to 1kg) for chemical verification and lab testing. Importers only cover the express shipping costs, which are fully refundable upon placing a commercial bulk order.
Yes, of course! We have been specializing in this chemical manufacturing field for many years. We operate large port-side warehouses in Qingdao and Tianjin to avoid carrier delays. Our customers trust us because we deliver on time and maintain consistent quality.
We accept flexible payment options including T/T (Telegraphic Transfer), L/C (Letter of Credit) at sight, D/P (Documents Against Payment), and O/A (Open Account) for established, long-term partners with verified credit scores.
Of course, you are very welcome to visit our company in Zibo, Shandong Province, China (approx. 1.5 hours drive from Jinan Yaoqiang Airport). We can arrange a guided tour of our synthesis labs, storage yards, and packaging lines.
You can send an inquiry directly to our sales representative via email or the online contact portal. Our team will guide you through the process, providing a detailed Proforma Invoice, shipping quotes, and compliance worksheets.
For typical weather restoration and stain removal, we recommend a ratio of 5% to 10% by weight (approx. 60g to 120g of oxalic acid crystals dissolved per 1 liter of warm water). Warm water increases solubility and improves penetration into hardwoods.
Oxalic acid dihydrate is classified under UN 3261, Corrosive Solid, Acidic, Organic, N.O.S., Hazard Class 8, Packing Group III. Our export department manages all UN-approved packaging and customs declarations for hazardous goods.
Oxalic acid is a selective reducing agent that targets iron and tannin staining without altering the wood’s natural background color. Hydrogen peroxide (A/B) bleaches are non-selective oxidizing agents that chemically strip all pigments from the wood, turning it pale white. For selective timber restoration, oxalic acid is the preferred choice.
Explore our range of industrial solvents, chemical intermediates, and synthetic raw materials available for mixed container shipments.
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