Oxalic Acid

Chemical Name: Ethanedioic Acid

Abbreviation: OA

CAS No.: 144-62-7

HS Code: 29171100

1. Product Overview

Oxalic acid is a widely used organic acid with strong acidity and reducing properties. It appears as white crystal or crystalline powder, odorless, soluble in water, ethanol, and ether. It is widely used in textile, marble polishing, metal cleaning, leather processing, pharmaceuticals, and other industrial fields. We supply both Oxalic Acid Dihydrate and Oxalic Acid Anhydrous with high purity and stable quality for global markets.

2. Product Specifications

Oxalic Acid Dihydrate

Item	Standard
Appearance	White crystal or crystalline powder
Purity	≥99.6%
Loss on Drying	≤1.0%
Insoluble Matter	≤0.10%
Sulphate (SO₄²⁻)	≤0.08%
Chloride (Cl⁻)	≤0.01%
Iron (Fe)	≤0.001%

Oxalic Acid Anhydrous

Item	Standard
Appearance	White crystal or crystalline powder
Purity	≥99.8%
Loss on Drying	≤0.05%
Insoluble Matter	≤0.05%
Sulphate (SO₄²⁻)	≤0.05%
Chloride (Cl⁻)	≤0.005%
Iron (Fe)	≤0.0005%

3. Main Applications

1) Textile & Leather Industry

Used as a bleaching agent for cotton, linen, and other natural fibers.
Used for leather tanning and dyeing auxiliary.
Helps remove impurities and improve color brightness.

2) Marble & Stone Industry

Ideal for marble cleaning, rust removal, and polishing.
Effectively removes yellowing, water stains, and mineral deposits on stone surfaces.
Widely used in stone maintenance and restoration.

3) Metal Treatment & Surface Cleaning

Used for metal derusting, decontamination, and surface activation.
Suitable for steel, aluminum, and other metal surface treatment.
Removes oxide layers and improves coating adhesion.

4) Dyeing & Printing Industry

Used as a reducing agent and developer in dyeing processes.
Helps improve dye uptake and color uniformity.

5) Pharmaceutical & Chemical Industry

Used as an intermediate for organic synthesis.
Used in manufacturing various chemicals, medicines, and reagents.

6) Other Applications

Used in wastewater treatment as a reducing agent.
Used in rare earth mineral processing and catalyst preparation.
Used in daily chemical and cleaning products.

4. Packaging

25kg PP woven bag with PE liner
25kg fiber drum
1000kg jumbo bag
Custom packaging available upon request

5. Storage & Handling

Store in a cool, dry, and ventilated area.
Keep away from moisture, heat, and incompatible substances.
Avoid contact with strong alkalis, oxidizing agents, and food.
Use proper personal protection during handling.

6. Our Advantages

High purity, stable quality, and consistent performance
Competitive factory price with large stock
Professional export experience and fast delivery
Full quality inspection before shipment
Flexible payment terms and reliable after-sales service

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