Description

Oxalic acid, often found in natural sources, is a powerful dicarboxylic acid that has garnered attention for its diverse applications. When encountered as “Oxalic Acid 99%,” it refers to a highly concentrated, nearly pure form of the compound. This article will explore what oxalic acid is, its properties, the uses of the 99% concentration, and important safety considerations associated with its handling.

What is Oxalic Acid?

Oxalic acid, with the chemical formula (COOH)₂, is an organic compound that belongs to the family of carboxylic acids. It’s naturally present in plants like rhubarb, spinach, and star fruit, where it exists as its salt, oxalate. However, the oxalic acid we’re discussing here – the 99% concentrated form – is typically produced industrially through chemical processes.

Properties of Oxalic Acid 99%

High Concentration: The “99%” designation indicates a product of extremely high purity, meaning it contains very little in the way of impurities. This concentrated form is usually a white crystalline powder or solid.
Acidity: Oxalic acid is a strong reducing agent and a relatively strong acid compared to vinegar (acetic acid). This acidity is a key property that drives many of its applications.
Water Solubility: It is soluble in water, forming an acidic solution. However, it is less soluble in organic solvents.
Reactivity: It reacts with various metals and metal oxides, forming oxalate salts. This reactivity is crucial for its cleaning and rust-removing abilities.
Toxic Nature: While naturally occurring in plants, concentrated oxalic acid, especially the 99% form, is TOXIC and must be handled with great care.
Uses of Oxalic Acid 99%

The high concentration of 99% oxalic acid makes it ideal for various applications:

Cleaning and Rust Removal: It’s a popular ingredient in cleaning products, particularly those designed for removing rust, stains, and mineral deposits from metals, wood, and ceramics. Its acidity allows it to break down these deposits effectively.
Bleaching and Stain Removal: It can also be used for bleaching wood, fabrics, or paper by breaking down pigment molecules. It’s useful for removing stubborn stains, including rust and ink.
Metal Treatment: Used in metal treatment processes, such as preparing metal surfaces for further treatment or coatings. It can also remove oxides from metal surfaces.
Laboratory Reagent: In chemistry labs, it serves as a reagent in various chemical syntheses and titrations. Its high purity makes it suitable for analytical purposes.
Beekeeping: Diluted oxalic acid solutions are used to control Varroa mites, a significant parasite affecting honeybees. (Note: This is not done with the 99% form directly; careful dilution is crucial).
Textile Industry: Oxalic acid is sometimes used in the textile industry for processes like dyeing and printing.
Safety Precautions When Handling Oxalic Acid 99%

SAFETY IS PARAMOUNT when dealing with 99% oxalic acid:

Protective Gear: Always wear appropriate personal protective equipment (PPE) when handling oxalic acid powder or its solutions. This includes:
Gloves: To protect your skin.
Safety Glasses/Goggles: To prevent eye contact.
Respirator: If dust or fumes may be present.
Ventilation: Work in a well-ventilated area to avoid inhaling dust or vapors.
Avoid Ingestion: Never ingest oxalic acid. It is toxic if swallowed, causing severe internal organ damage.
Avoid Skin Contact: Direct skin contact can lead to irritation and burns. Wash thoroughly if contact occurs.
Avoid Eye Contact: Direct eye contact can cause severe irritation and potentially permanent damage. Flush with copious amounts of water immediately if contact occurs.
Proper Storage: Store oxalic acid in a tightly sealed container, away from children, pets, and incompatable substances (like strong bases).
Handling Solutions: Even dilute solutions of oxalic acid can be irritants. Handle them with care.
Consult SDS: Always refer to the Safety Data Sheet (SDS) for specific information on handling and safety procedures for the product you are using.
Conclusion

Oxalic acid 99% is a powerful chemical with a variety of industrial and practical applications. Its high concentration makes it effective for cleaning, bleaching, and other processes. However, it’s a toxic substance that requires the utmost caution and adherence to safety precautions when handling. Understanding its properties, applications, and risks is crucial for its responsible use. Therefore, always prioritize safety measures while reaping the benefits of this versatile compound.

Disclaimer: This article is intended for informational purposes only and does not constitute professional advice. Always consult relevant experts and safety information before handling any chemicals.