Product Overview

Oxalic Acid Dihydrate 99.5% AR/ACS (CAS No. 6153-56-6) is analytical-reagent ethanedioic acid dihydrate, H₂C₂O₄·2H₂O. Its defined dibasic-acid stoichiometry, reducing behaviour and oxalate complexation chemistry make it useful in classical volumetric, precipitation and reagent-standardisation procedures.

The AR/ACS grade is intended for conventional analytical chemistry, including acid–base titrimetry, permanganate–oxalate redox procedures and preparation of analytical oxalate solutions. It may be used in method-defined standardisation work where the procedure specifically calls for oxalic acid dihydrate.

Typical Applications

• Acid–base titration procedures
• Permanganate–oxalate redox titrations
• Preparation of analytical oxalate solutions
• Standardisation studies in volumetric analysis
• Calcium oxalate precipitation studies
• Metal-ion complexation investigations
• Analytical reagent and working-solution preparation

Common Synonyms

• Oxalic acid dihydrate
• Ethanedioic acid dihydrate
• Ethanedioic acid, dihydrate
• Oxalic acid–water (1:2)

Storage Conditions

Store tightly closed and protect from uncontrolled moisture exchange and analytical contamination. Preserve the dihydrate composition and use clean equipment during quantitative weighing and solution preparation.