Oxalic acid
Oxalic acid (CAS: 144-62-7), with the chemical formula HO₂CCO₂H and a molecular weight of 90.03 g/mol, is a colourless crystalline solid. It is a dicarboxylic acid known for its strong reducing properties and its ability to chelate metals. Oxalic acid is widely utilised in various industrial applications, including cleaning, bleaching, and as a reagent in chemical synthesis.
Cleaning and Degreasing Agent
Oxalic acid is highly effective at removing rust and stains from various surfaces due to its chelating properties and acidic nature. It is commonly used in household cleaners and industrial degreasing formulations.
Bleaching Agent
In the textile and paper industries, oxalic acid serves as a bleaching agent. It helps to remove colours and impurities, contributing to whiter and brighter end products.
Chemical Synthesis
As an organic acid, oxalic acid is a valuable precursor and reagent in the synthesis of various organic compounds. It is also used in analytical chemistry for titrations and as a standard.
Metal Treatment
Oxalic acid is employed in metal finishing processes, such as passivation and the removal of metal oxides. It also finds use in the electroplating industry.
| Molecular weight | 90.03 |
|---|---|
| Linear formula | HO2CCO2H |
| Assay | ≥98% |
| Solubility | water: soluble108 g/L at 25 °C |
| Concentration | 1.000 g/L in H2O |
| Vapour pressure | <0.01 mmHg (20 °C) |
| Vapour density | 4.4 (vs air) |
| Melting point | 189.5 °C (dec.)(lit.) |
| Impurities tested | ~1% water |
Hazard statements
- H302Harmful if swallowed
- H318Causes serious eye damage
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
| Water hazard class (WGK, DE) | 1 |
|---|---|
| Hazard codes (EU) | Xn |
| Risk statements (R) | 21/22-41 |
| Safety statements (S) | 26-36-37-39 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Shelf Life | (limited shelf life, expiry date on the label) |
|---|---|
| Factor | 1.000 ±0.002 |
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is oxalic acid used for?
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Oxalic acid is used as a cleaning and degreasing agent, a bleaching agent in the textile and paper industries, a reagent in chemical synthesis, and in metal treatment processes.
What is the CAS number and formula for oxalic acid?
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The CAS number for oxalic acid is 144-62-7, and its chemical formula is HO₂CCO₂H.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies oxalic acid with an assay of ≥98%. This product is supplied for research and technical applications, and we do not represent it as USP, BP, or EP grade.
How should oxalic acid be handled safely?
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Oxalic acid is classified as dangerous. It is harmful if swallowed and in contact with skin, and causes serious eye damage (H302 + H312-H318). Always wear appropriate personal protective equipment, including gloves, eye protection, and protective clothing, and ensure adequate ventilation when handling. Refer to the Safety Data Sheet for full details.
Is oxalic acid a controlled substance?
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Based on the provided data, oxalic acid is not listed as a controlled substance.
How is oxalic acid packaged and exported?
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Oxalic acid is carefully packaged to maintain its integrity during transit. Tech Serve Solutions is experienced in exporting chemicals globally, adhering to all relevant shipping regulations.
How can I request a quote or sample?
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To request a quote or a sample of oxalic acid, please contact our sales team through the website or by phone, providing your specific requirements.
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