Oxalic Acid, Dihydrate - Ethanedioic Acid

Product Overview

Oxalic Acid, Dihydrate — also known as Ethanedioic Acid dihydrate — is a crystalline dicarboxylic acid with the molecular formula C2H6O6 and a molecular weight of 126.07 g/mol. As a highly purified organic acid, this solid compound plays a critical role in diverse industrial applications ranging from metal surface preparation to textile processing. You can explore our full range of acids to find corresponding materials. Distinguishing itself by its high acidity and strong reducing characteristics, it serves as an excellent chelating agent for metal ions, particularly iron, making it highly valued in rust removal and industrial equipment restoration.

Alliance Chemical provides this product in high-quality solid forms including pellets, large crystals, and dry powder to ensure consistent performance across manufacturing sectors. Visit our metal finishing industry page for more details on surface preparation applications. Industrial operators rely on this compound to manage metal complexation, process raw fibers, and execute precise organic synthesis operations. Because we supply this chemical under strict quality controls, you can trust its physical consistency and chemical integrity for high-volume manufacturing runs. Every order includes a comprehensive safety data sheet to ensure regulatory compliance and secure onsite material handling.

Why This Grade

Selecting the appropriate dihydrate solid form of Ethanedioic Acid is critical for preventing process deviations in sensitive manufacturing lines. Unlike anhydrous variants or dilute pre-made solutions, the dihydrate solid provides a stable, crystalline structure that maintains its assay integrity under standard storage conditions. This consistent crystalline state allows for accurate dry-weight measurements and precise stoichiometric calculations in chemical reactions, which is necessary for scaling up industrial synthesis or adjusting bath concentrations in industrial cleaning processes.

Using an incorrect or substandard grade introduces unwanted impurities, such as heavy metal ions or excess moisture, which can trigger catalytic degradation in organic reactions or leave undesirable residues on treated surfaces. In textile processing or metal finishing, these impurities lead to uneven coloration, failure of metal adhesion, or accelerated corrosion. Alliance Chemical ensures that our solid product meets strict consistency standards, minimizing the risk of process failure and optimizing bath longevity in electroplating and metal treatment lines.

Industrial Applications

• Metal Rust and Scale Removal: Widely utilized in metal finishing shops to solubilize insoluble iron compounds and restore oxidized surfaces to their base metal state.
• Textile Dyeing and Bleaching: Serves as an effective mordant in dyeing processes and as a bleaching agent for natural fibers in the textile industry.
• Wood Restoration and Treatment: Acts as an industrial wood bleach to strip weathered gray fibers, lift dark water stains, and prepare timber for refinishing.
• Chemical Synthesis Feedstock: Used as a key intermediate in the production of oxalates, specialized esters, and various organic compounds across industrial laboratories.
• Industrial Leather Tanning: Employed in the tanning process to neutralize excess lime, clean raw hides, and stabilize pH levels prior to secondary treatments.

Hazmat & Shipping

Oxalic Acid, Dihydrate is a regulated hazardous material classified under DOT regulations. It is transported globally under the identifier UN3261, classified as a Hazard Class 8 corrosive substance, and assigned to Packing Group III. Per the authoritative chemical registry, a formal GHS signal word is not applicable and no GHS pictograms are specified for this dihydrate form under the registry parameters. However, because it carries hazard codes such as H302 (Harmful if swallowed) and H312 (Harmful in contact with skin), strict adherence to safety protocols is mandatory during transport and receiving.

When handling this corrosive solid, personnel must wear appropriate personal protective equipment (PPE) as outlined in the precautionary statements, specifically P280. This includes chemical-resistant gloves, protective eye goggles (addressing H318 for serious eye damage), and respiratory protection in environments where dust generation is possible (addressing H373 for potential organ damage). Alliance Chemical coordinates with certified hazmat carriers to guarantee that all shipments comply with DOT regulations, ensuring safe, legal, and timely delivery to your facility.

Handling & Storage

This solid compound should be stored in a cool, dry, well-ventilated area, ideally within a temperature range of 15°C to 25°C, away from direct sunlight and sources of heat. Solid dihydrate crystals can lose hydration or cake if exposed to excessive heat or high humidity. Suitable container materials include high-density polyethylene (HDPE) or polypropylene, as the acidic nature of the dissolved chemical is highly corrosive to carbon steel, iron, and silver. Incompatible substances include strong oxidizing agents, strong bases, and active metals like sodium or potassium, which must be kept isolated from storage zones.

Order & Documentation

We supply Oxalic Acid, Dihydrate in multiple packaging sizes to meet your operational requirements, from small 2-pound bags to heavy 55-pound bags and bulk quantities. To assist your quality control team, a Certificate of Analysis (COA) is available upon request for every lot we ship, and a comprehensive Safety Data Sheet (SDS) is provided with every order. If you are ready to secure your chemical supply, please Request a Quote or Download the SDS today.

Why Buy from Alliance Chemical

Since 1997, Alliance Chemical has supplied premium industrial chemicals from Taylor, Texas under CAGE Code 1LT50, with a COA and SDS included on every order. For industrial use only.