Oxalic Acid - High Purity Chemical Compound

Product Overview

Oxalic acid is a dicarboxylic acid with the formula HOOC-COOH. As a leading manufacturer, Hongjian Chemical produces high-purity oxalic acid that meets international quality standards. Our oxalic acid appears as white crystalline powder with excellent solubility in water, alcohol.

Technical Specifications

• Chemical Formula: C₂H₂O₄

• CAS Number: 144-62-7

• Molecular Weight: 90.03 g/mol

• Appearance: White crystalline powder

• Purity: ≥99.6%

• Melting Point: 101-102°C

• Density: 1.653 g/cm³

Applications & Uses

Oxalic acid serves multiple industrial functions:

• Cleaning Agent: Effectively removes rust and stains in metal treatment

• Bleaching Agent: Used in textile and wood processing industries

• Pharmaceuticals: Intermediate in various drug formulations

• Laboratory Applications: As analytical reagent and buffer solution

• Other Uses: Beekeeping equipment cleaning, aluminum anodizing, and rare earth element extraction

This product is a powerful cleaner with refined oxalic acid as its core ingredient, specifically developed to tackle stubborn rust stains and contaminants on stone and tile surfaces. Rust (primarily composed of ferric oxide) undergoes an efficient chelation reaction with oxalic acid, forming soluble ferric oxalate, which effortlessly lifts the rust layer without compromising the material's gloss. Compared to strong acids like hydrochloric acid, oxalic acid is relatively milder. When used correctly, it has minimal impact on the internal crystalline structure of stone, effectively avoiding issues like surface powdering and loss of gloss caused by strong acid corrosion. It is not only perfect for addressing rust yellowing caused by renovation, aging pipes, or external pollution but also shows remarkable efficacy in removing mildew and grime from tile grout. Always test in an inconspicuous area first to ensure material compatibility. It is recommended to wear rubber gloves and safety goggles during use. Dilute the product as directed, apply it to the stained area, and allow it to sit for 5-10 minutes to react fully with the stain. Then, scrub with a stiff-bristled brush and rinse thoroughly with plenty of clean water. This product is an ideal cleaning companion for household bathrooms, kitchens, outdoor stone pathways, and tiled facades, quickly restoring surfaces to their original cleanliness and aesthetic appeal.