Product Overview
Oxalic Acid ACS Grade (CAS 144-62-7) is a highly purified dicarboxylic acid with the molecular formula C2H2O4 and a molecular weight of 90.03. As an anhydrous equivalent or dihydrate-derived crystalline solid, it serves as a critical reagent in various analytical, industrial, and laboratory processes. Alliance Chemical distributes this high-purity chemical to facilities across North America — ensuring that it meets strict quality standards. This product is key for facilities that require exact chemical compositions for their manufacturing operations. It is widely recognized for its strong chelating and reducing properties in specialized industrial applications.
Our Oxalic Acid ACS Grade is manufactured to ensure low trace metal impurities, making it highly reliable for demanding scientific operations. This white crystalline solid exhibits excellent solubility in water and other solvents under controlled conditions. Industrially, it is used in anodizing, metal treatment, textile processing, and chemical synthesis. Choosing Alliance Chemical means you are receiving a product backed by our decades of distribution expertise. We provide consistent quality control to meet your operational requirements, whether you operate a testing laboratory or a large-scale manufacturing plant.
Why This Grade
The ACS Grade designation indicates that this material complies with the strict specifications of the American Chemical Society. This standard is necessary for applications where even minor trace metal impurities can disrupt chemical reactions or contaminate sensitive substrates. Using a lower commercial grade instead of ACS Grade can introduce unwanted contaminants, such as heavy metals or iron, which interfere with complexation or oxidation-reduction steps. For high-precision testing and synthesis, this high purity is essential to prevent secondary reactions that skew analytical results or ruin valuable chemical batches.
When executing precise surface treatments, such as aluminum anodizing or textile processing, impurities in lower-grade oxalic acid can cause pitting, discoloration, or inconsistent bonding. Choosing this exact grade avoids these common failure modes, ensuring that chemical behaviors remain predictable across all batches. Facilities relying on consistent pH control or exact reducing action require this high concentration of pure C2H2O4. Alliance Chemical supplies this ACS Grade to eliminate process variability and to maintain the integrity of your technical operations and final outputs.
Chemical Profile
- CAS Number
- 144-62-7
- Chemical Formula
- C2H2O4
- Molecular Weight
- 90.03 g/mol
- Boiling Point
- Sublimes (NIOSH, 2024) °C
- Melting Point
- 372 °F (Decomposes) (NTP, 1992)
- Specific Gravity
- 1.9 at 59 °F (USCG, 1999) - Denser than water; will sink
- Appearance
- Oxalic acid is an odorless white solid. Sinks and mixes with water. (USCG, 1999)
- Solubility
- 50 to 100 mg/mL at 75 °F (NTP, 1992)
- UN Number
- UN3261
- Hazard Class
- Class 8
- Packing Group
- III
Values sourced from Alliance Chemical's canonical chemistry registry. Certificate of Analysis (COA) per lot.
Industrial Applications
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Metal Surface Preparation and Derusting: Utilized in critical surface cleaning processes to remove metal oxides and rust from industrial equipment without damaging the underlying metal substrate.
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Anodizing and Metal Finishing: Serves as an electrolyte additive in specialized aluminum anodizing procedures to produce protective oxide coatings with consistent thickness and structural integrity.
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Textile and Dyeing Processes: Applied as a mordant and neutralizing agent in industrial fabric dyeing to fix colors uniformly and eliminate trace metal contamination from processing water.
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Chemical Synthesis and Reagent Manufacturing: Functions as a key intermediate in the synthesis of organic compounds, oxalates, and high-purity chemical reagents for laboratory research.
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Rare Earth Element Separation: Employed as a precipitating agent in mining and refining operations to isolate rare earth metals from ore mixtures efficiently.
Hazmat & Shipping
Oxalic Acid ACS Grade is a regulated material under transport safety laws. It is classified under UN3261 as a Corrosive Solid, Acidic, Organic, N.O.S. (Oxalic Acid), belonging to Hazard Class 8 and Packing Group III. In accordance with the GHS standards of our authoritative regulatory data, the GHS pictograms are not applicable, and the official GHS Signal Word is not applicable. This chemical carries hazard statements H302 (Harmful if swallowed) and H312 (Harmful in contact with skin). Compliance-focused shipping ensures that all transport containers are properly labeled and documented to meet Department of Transportation standards, minimizing handling risks during transit.
Due to its classification as a corrosive solid and its hazard statements, personnel must utilize appropriate personal protective equipment (PPE) during handling. To mitigate risks associated with H302 and H312, workers must wear chemical-resistant gloves, eye protection, and protective clothing in accordance with OSHA standards and the precautionary statements: P264, P270, P280, P301+P317, P302+P352, P317, P321, P330, P362+P364, and P501. Safe handling procedures must be strictly enforced within your facility. Alliance Chemical ensures that a Safety Data Sheet (SDS) is provided with every order to guide your team on safe transport, storage, and disposal protocols.
Handling & Storage
Proper handling and storage of Oxalic Acid ACS Grade are necessary to maintain its high purity and prevent hazardous reactions. Store this material in a cool, dry, well-ventilated area away from direct sunlight, maintaining a consistent temperature range to prevent degradation. It is essential to keep the solid in its original, tightly sealed, moisture-resistant containers, as it can absorb ambient moisture. This chemical is incompatible with strong oxidizing agents, strong bases, and active metals like silver or mercury, which can form explosive compounds. Ensure that all handlers are trained on these safety parameters and reference the provided documents before use.
Order & Documentation
At Alliance Chemical, we simplify your procurement process by providing prompt customer service and complete technical documentation. A Certificate of Analysis (COA) is available upon request for every batch of Oxalic Acid ACS Grade to verify its compliance with ACS standards. We make it easy for your compliance and operations teams to access vital material safety details. To secure your supply or clarify transport arrangements, you can Order Oxalic Acid ACS Grade Online, Request a Quote for bulk volumes, or Download the SDS directly from our online portal.
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.