As a diprotic organic acid, oxalic acid contains two carboxyl groups, giving it two ionizable hydrogen atoms. In aqueous solution, it dissociates into oxalate ions and two hydrogen ions, as shown in the following reactions:

Oxalic acid is chemically reactive and can undergo coordination reactions with many metal ions to form oxalate salts with coordination chemistry characteristics. It also reacts with sodium hydroxide (NaOH) to produce sodium oxalate (Na₂C₂O₄).
Oxalic acid is toxic, so safety precautions must be taken during use. When storing and handling oxalic acid, avoid contact with strong oxidizing agents and reducing agents to prevent hazardous chemical reactions.

Oxalic Acid – Shandong Pulisi Chemical Co., Ltd.
Shandong Pulisi Chemical Co., Ltd. is a leading Chinese manufacturer and supplier of premium-grade Oxalic Acid (Ethanedioic Acid, CAS No. 144-62-7). Our product features a minimum purity of 99.6%, appearing as white crystalline powder with excellent solubility, stable chemical properties, and low impurity levels.
Widely recognized across industries, our oxalic acid is applied in textile printing and dyeing, leather tanning, marble surface cleaning, metal polishing, rare earth element extraction, pharmaceutical intermediate synthesis, and industrial cleaning formulations. We offer flexible packaging options (25kg/bag, 50kg/bag, jumbo bags) and customizable production to meet diverse client specifications.
With robust production capacity, rigorous quality control systems, and years of experience in global chemical trade, we ensure consistent product quality, timely delivery, and comprehensive technical support (including MSDS, TDS, and COA documentation). As a trusted partner for global buyers, Shandong Pulisi Chemical is dedicated to delivering reliable oxalic acid solutions that drive operational efficiency and sustainable growth for our customers.