2lb Oxalic Acid technical-grade ethanedioic acid in HDPE bottle Alliance Chemicals branding, CAS#6153-56-6, Made in USA
2-lb bottles of Oxalic Acid dihydrate, industrial rust and stain remover in HDPE containers, Alliance Chemical brand
2-lb bottles of Oxalic Acid dihydrate, ethanedioic acid in HDPE containers rust removal agent, 4-pack from Alliance Chemical
5 lb bag of Alliance Chemical Oxalic Acid, Dihydrate - Ethanedioic Acid with a resealable top and product label.
55 lb bag of Alliance Chemical Oxalic Acid, Dihydrate - Ethanedioic Acid with a sealed top and product label.
Four 55 lb bags of Alliance Chemical Oxalic Acid, Dihydrate - Ethanedioic Acid with product label.

Oxalic Acid, Dihydrate - Ethanedioic Acid

Category : Acids

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Oxalic Acid, Dihydrate - Ethanedioic Acid

$11.16
2lb Oxalic Acid technical-grade ethanedioic acid in HDPE bottle Alliance Chemicals branding, CAS#6153-56-6, Made in USA
2-lb bottles of Oxalic Acid dihydrate, industrial rust and stain remover in HDPE containers, Alliance Chemical brand
2-lb bottles of Oxalic Acid dihydrate, ethanedioic acid in HDPE containers rust removal agent, 4-pack from Alliance Chemical
5 lb bag of Alliance Chemical Oxalic Acid, Dihydrate - Ethanedioic Acid with a resealable top and product label.
55 lb bag of Alliance Chemical Oxalic Acid, Dihydrate - Ethanedioic Acid with a sealed top and product label.
Four 55 lb bags of Alliance Chemical Oxalic Acid, Dihydrate - Ethanedioic Acid with product label.

Commercial Fulfillment Snapshot

Buy Oxalic Acid, Dihydrate - Ethanedioic Acid with faster decisions and fewer back-and-forth emails.

Ships from Taylor, Texas. In-stock orders placed before 1:00 PM CT (Mon-Thu) and before 12:00 PM CT (Fri) typically ship same business day. Order online 24/7.

Email Bulk Quote Call (512) 365-6838

Technical Documents

SDSTDSCOA

Lot-specific COA is issued per shipment batch.

Who Buys This
  • Metal treatment & finishing shops
  • Analytical chemistry laboratories
  • Industrial cleaning companies
  • Research & development facilities
  • Quality control testing labs
Purity / Grade Guide
  • Industrial & lab applications
  • Purity verified by COA
  • Suitable for commercial use
  • Reducing agent properties
Pack Sizes
  • 2 lb: bench & testing
  • 5 lb: shop & formulating
  • 55 lb: bulk, best $/lb
SDS / COA / TDS
  • UN 3261 Class 8 packaging
  • SDS included with order
  • COA provided for verification
  • DOT compliant shipping labels
Small Packs: UPS Ground nationwide for pints, quarts, and gallons.
LTL / FTL: ABF, SEFL, Saia, XPO, and partner carriers for pails, drums, totes, and full truckloads.
Support: Email or call for freight options, hazardous-material routing, and lead-time confirmation.

Product Overview

Oxalic Acid Dihydrate (Ethanedioic Acid) is a high-purity, colorless crystalline solid meeting specifications. With a formula of C₂H₂O₄·2H₂O, it serves as a potent reducing agent and complexing agent in industrial and laboratory environments. This product maintains a typical assay of 99.0% to 100.5%, ensuring consistent performance for analytical titrations and sensitive manufacturing processes.

Ideally suited for metal surface treatment, this organic acid effectively removes rust and scale by forming water-soluble complexes with iron ions. Its dihydrate form offers stable handling and precise solubility. Alliance Chemical supplies this material in sizes ranging from lab-scale quantities to bulk 55 lb bags to support diverse operational needs.

Key Properties

  • Chemical Name: Oxalic Acid, Dihydrate
  • Synonyms: Ethanedioic Acid
  • CAS Number: 6153-56-6
  • Assay: 99.0% - 100.5%
  • Appearance: Colorless to white crystalline solid
  • Molecular Weight: 126.07 g/mol
  • Iron (Fe): ≤ 2 ppm
  • Residue after Ignition: ≤ 0.01%
  • Solubility: Soluble in water and ethanol

Common Applications

  • Metal Surface Finishing: Used extensively to remove rust, scale, and tarnish from iron and steel surfaces prior to coating or plating.
  • Wood Bleaching: Acts as a bleaching agent for wood pulp and furniture restoration, effectively removing stains and lightening wood tones.
  • Analytical Chemistry: Functions as a primary standard in acid-base titrations and a reducing agent in manganometry.
  • Textile Processing: Utilized as a mordant in dyeing processes and for removing rust stains from fabrics.
  • General Cleaning: Effective ingredient in industrial strength cleaning formulations for decks, masonry, and equipment maintenance.

Safety & Handling

Oxalic Acid Dihydrate is a corrosive solid and must be handled with care. It causes severe skin burns and eye damage. Personnel should strictly adhere to safety protocols, including the use of chemical-resistant gloves, safety goggles, and protective clothing to prevent contact.

Do not breathe dust or mist. Ensure adequate ventilation or use appropriate respiratory protection during handling. Store in a cool, dry, well-ventilated area, away from strong bases and oxidizing agents. Refer to the Safety Data Sheet (SDS) for comprehensive emergency and disposal information.

Benefits

  • ACS Purity: Meets strict American Chemical Society specifications for low impurity levels.
  • Effective Chelator: Superior ability to bind metal ions, making it ideal for rust removal and water treatment.
  • Versatile Pack Sizes: Available in 2 lb, 5 lb, and 55 lb options for specific project requirements.

Related Products

Property Value
Molecular Weight 126.07 g/mol
Formula C2H2O42H2O
Grade Reagent
Form Solid
Solubility Soluble in water, alcohol, and ether
Appearance Colorless crystals
Melting Point 101 °C
Specific Gravity 1.653
Industry Industrial, Healthcare, Other

Frequently Asked Questions About Oxalic Acid, Dihydrate - Ethanedioic Acid

What is Oxalic Acid, Dihydrate - Ethanedioic Acid and what is its chemical formula?
Oxalic Acid, Dihydrate - Ethanedioic Acid is a chemical compound with the molecular formula C2H2O42H2O, registered under CAS Number 6153-56-6 by the Chemical Abstracts Service (PubChem), with a molecular weight of 126.07 g/mol. Alliance Chemical supplies Oxalic Acid, Dihydrate - Ethanedioic Acid in Reagent grade for laboratory, industrial, and commercial applications.
What are the physical properties of Oxalic Acid, Dihydrate - Ethanedioic Acid?
According to the NIOSH Pocket Guide to Chemical Hazards, Oxalic Acid, Dihydrate - Ethanedioic Acid is supplied as a solid with a colorless crystals appearance. It has a melting point of 101°C. The specific gravity is 1.653 relative to water. Solubility: Soluble in water, alcohol, and ether.
What grade and purity of Oxalic Acid, Dihydrate - Ethanedioic Acid does Alliance Chemical offer?
Alliance Chemical offers Oxalic Acid, Dihydrate - Ethanedioic Acid in Reagent grade. Every lot ships with a Certificate of Analysis (COA) and Safety Data Sheet (SDS) prepared in accordance with OSHA Hazard Communication Standard 29 CFR 1910.1200 and GHS Revision 7. Download SDS.
What are common industrial applications of Oxalic Acid, Dihydrate - Ethanedioic Acid?
Oxalic Acid, Dihydrate - Ethanedioic Acid serves a wide range of sectors, including Industrial, Healthcare, and Other.Alliance Chemical provides the documentation and quality certifications required for use in regulated environments.
What PPE is required when handling Oxalic Acid, Dihydrate - Ethanedioic Acid?
OSHA-mandated PPE per 29 CFR 1910.132-138:Chemical-resistant gloves (20+ mil neoprene or PVC), full face shield over safety goggles (ANSI Z87.1), acid-resistant apron or chemical suit, closed-toe chemical-resistant footwear. Emergency eyewash station and safety shower must be accessible within 10 seconds per ANSI Z358.1. Consult the SDS available from Alliance Chemical for complete PPE requirements.
What are the storage requirements for Oxalic Acid, Dihydrate - Ethanedioic Acid?
Store perOSHA 29 CFR 1910.1450: Dedicated corrosives cabinet with secondary containment (110% volume per EPA 40 CFR 264.175). Temperature range:15-25°C. Segregate from:bases, reactive metals, organic materials. Maximum storage:2-3 years unopened.
What is the emergency spill procedure for Oxalic Acid, Dihydrate - Ethanedioic Acid?
Emergency response per EPA SPCC (40 CFR 112) and OSHA 29 CFR 1910.120: (1) Alert personnel, evacuate area to 50 feet. (2) Eliminate ignition sources if flammable. (3) Don PPE per SDS Section 8. (4) Stop leak if safe; use emergency shutoffs. (5) Contain with non-combustible absorbent materials, dike with sand/earth. (6)Carefully neutralize with sodium bicarbonate (5-10% solution), monitor exothermic reaction. (7) Collect in DOT-approved containers, label as hazardous waste. Check 40 CFR 302.4 for Reportable Quantity. Emergency: Chemtel 1-800-255-3924 (24/7). Non-emergency: Alliance Chemical 512-365-6838.
What is the DOT shipping classification for Oxalic Acid, Dihydrate - Ethanedioic Acid?
DOT Classification per 49 CFR 172.101:See SDS Section 14 for specific UN number, Hazard Class8 (Corrosive), Packing GroupII/III. Requires: Hazmat shipping papers (49 CFR 172.200), UN specification packaging (49 CFR 173), hazmat labels (172.400). Alliance Chemical ships all orders in DOT-compliant packaging with proper documentation.
How must Oxalic Acid, Dihydrate - Ethanedioic Acid waste be disposed?
Disposal per RCRA (40 CFR 261-265):Characteristic waste D002 (Corrosive, pH ≤2 or ≥12.5). Generator requirements: EPA ID number required if >100 kg/month (40 CFR 262.12). Use EPA-permitted Treatment, Storage, Disposal Facility (TSDF). Never discharge to sewer without POTW written approval (40 CFR 403). Container disposal: Triple rinse (40 CFR 261.7), offer for reconditioning/recycling. State regulations may be more stringent — check with your local environmental agency. Consult the Alliance Chemical SDS for product-specific disposal guidance.
Does Alliance Chemical provide an SDS and COA for Oxalic Acid, Dihydrate - Ethanedioic Acid?
Yes. Alliance Chemical provides a Safety Data Sheet (SDS) and Certificate of Analysis (COA) for every lot of Oxalic Acid, Dihydrate - Ethanedioic Acid. The SDS is prepared in accordance with OSHA Hazard Communication Standard 29 CFR 1910.1200 and the Globally Harmonized System (GHS) Revision 7, covering all 16 required sections including hazard identification, first aid measures, firefighting measures, handling and storage, exposure controls, and regulatory information. The SDS is available for download directly from this product page. COAs are available upon request by contacting Alliance Chemical at 512-365-6838.

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