Product Description of Oxalic acid CAS#144-62-7
Oxalic acid is a white crystalline solid, soluble in water, with weak acidic property. It is a common organic acid with strong chelating and reducing capacity.
Oxalic acid is primarily used for metal surface treatment, rust removal and bleaching, widely used in metallurgy and textile processing.
It is also widely applied in rare earth extraction, wastewater treatment and chemical synthesis industries.
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Chemical Properties of Oxalic acid CAS#144-62-7
| Melting point | 189.5 °C (dec.)(lit.) |
| Boiling point | 365.1°C (estimate) |
| bulk density | 750kg/m3 |
| density | 0.99 g/mL at 25 °C |
| vapor density | 4.4 (vs air) |
| vapor pressure | <0.01 mm Hg ( 20 °C) |
| refractive index | 1.4261 (estimate) |
| Fp | 101-157°C |
| storage temp. | Store below +30°C. |
| solubility | water: soluble108g/L at 25°C |
| form | Liquid |
| pka | 1.23(at 25℃) |
| color | White |
| PH | 3(1 mM solution);2.09(10 mM solution);1.31(100 mM solution); |
| PH Range | 6 - 8 at 25 °C |
| Odor | odorless |
| Water Solubility | 90 g/L (20 ºC) |
| Specific Heat Capacity | Cp(crystal): 1.01 J/(g·K); Cp(gas): 0.96 J/(g·K), at 25℃ |
| Sublimation | 101-157 ºC |
| Merck | 14,6911 |
| BRN | 385686 |
| Henry's Law Constant | 1.43 at pH 4 (quoted, Gaffney et al., 1987) |
| Exposure limits | ACGIH:TLV-TWA 1 mg/m3; TLV-STEL 2 mg/m3 OSHA:PEL-TWA 1 mg/m3 NIOSH:REL-STEL 2 mg/m3 |
| Stability: | Stable, but moisture sensitive. Incompatible with metals. |
| Cosmetics Ingredients Functions | CHELATING |
| InChI | 1S/C2H2O4/c3-1(4)2(5)6/h(H,3,4)(H,5,6) |
| InChIKey | MUBZPKHOEPUJKR-UHFFFAOYSA-N |
| SMILES | OC(=O)C(O)=O |
| LogP | -1.7 at 23℃ |
| CAS DataBase Reference | 144-62-7(CAS DataBase Reference) |
| NIST Chemistry Reference | Oxalic acid(144-62-7) |
| EPA Substance Registry System | Oxalic acid (144-62-7) |
Safety Information
| Hazard Codes | Xn |
| Risk Statements | 21/22-63-34-41 |
| Safety Statements | 24/25-23-36/37/39-27-26-39-37-36-36/37 |
| RIDADR | UN 3261 8/PG 3 |
| OEB | C |
| OEL | TWA: 1 mg/m3, STEL: 2 mg/m3 |
| WGK Germany | 1 |
| RTECS | RO2450000 |
| TSCA | TSCA listed |
| HazardClass | 8 |
| PackingGroup | III |
| HS Code | 29171110 |
| Storage Class | 11 - Combustible Solids |
| Hazard Classifications | Acute Tox. 4 Dermal Acute Tox. 4 Oral Eye Dam. 1 |
| Hazardous Substances Data | 144-62-7(Hazardous Substances Data) |
| Toxicity | LD50 orally in Rabbit: 375 mg/kg |
| IDLH | 500 mg/m3 |
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Product Application of Oxalic acid CAS#144-62-7
Oxalic acid is primarily used in the production of metal treatment and bleaching products, which are important raw materials for rust removers, metal surface cleaners and textile bleaching agents. It is also used in the manufacture of rare earth extraction agents, water treatment additives, and other specialty organic acid products.
In addition, Oxalic acid serves as an important organic acid with chelating and reducing properties in various chemical separation and industrial processes. Its strong complexing ability allows it to participate in a wide range of purification and surface treatment processes, supporting applications across metallurgy, textile, rare earth processing and wastewater treatment industries.
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