Oxalic Acid Tach 99%

Oxalic Acid Tach 99%

CAS Number: 144‑62‑7

Synonyms: Oxalic acid; Ethanedioic acid; Oxalic acid anhydrous

Chemical Formula:C₂H₂O₄

Molecular Weight:90.03 g/mol

Product Introduction

A colorless, odorless crystalline powder or granules (≥99%, technical/analytical grade). Oxalic acid is a strong dicarboxylic acid and reducing agent, widely used in cleaning, rust removal, bleaching, metal chelation, and as a precursor in pharmaceuticals and lab reagents.

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Physical & Chemical Properties

Property Value
Appearance White crystalline powder (anhydrous)
Purity ≥99%
Density @ 20 °C ~1.90 g/cm³
Melting/Decomposition ~189–190 °C (decomposes)
Solubility in Water ~108 g/L @ 25 °C
Vapor Pressure @ 20 °C <0.01 mm Hg
Refractive Index (n₂₀ᴅ) —
pKₐ₁ / pKₐ₂ ~1.25 / ~4.0

Applications

  • Rust removal & bleaching (wood, textiles)
  • Cleaning agent:radiators, scale, and reactive metal pretreatment
  • Analytical reagent:mordants, metal chelator, removing ferric ions, ion chromatography
  • Organic synthesis: reducing agent, precursor for esters, acids, pharmaceutical intermediates

Safety & Handling

  • Toxic if inhaled or ingested; corrosive. NFPA health 3, flammability 1. Use gloves, goggles, and handle in fume hood; store in sealed container away from oxidizers. UN 3261, Class 8, PG III.

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