Oxalic acid 2AQ, ex China
General Product Information
| Article | Oxalic acid 2AQ, ex China |
| Synonyms | Oxalic acid dihydrate, 1,2-ethanedioic acid, Ethanedioic acid, Wood bleach, (Carboxyl)carboxylic acid, Carboxylformic acid, Dicarboxylic acid, Diformic acid |
| CAS No. | 6153- 56-6 |
| EEG No. | 607-006-00-8 |
| EINECS No. | 205-634-3 |
| IMO | – |
| Tariff Code | 2917110091 |
| UN No. | – |
| VLG/ADR | – |
Description
Oxalic acid 2AQ is a hydrated organic acid used for its cleansing, reducing and complexing properties. The product is produced in China and exported for use in chemical, stone, metal and textile industries, among others. In solid form, it is a white, crystalline powder that is highly soluble in water.
Characteristics
- Odor: Odorless.
- Hygroscopic: Yes.
- Color: White.
- Grade: Technical.
- Solubility: Highly soluble in water; moderately soluble in ethanol.
- Shape: Crystalline powder.
Physical & Chemical Properties
| Chemical Structure | C2H2O4-2H2O |
| Molar Weight | 126.07 g/mol |
| Melting Point | 102 °C |
| Boiling Point | – |
| Density | 1.65 g/cm³ |
| Refractive Index | – |
| pH | Approx. 1.3 (on 1% solution). |
Applications
Oxalic acid 2AQ is applied in various ways, for instance:
1. Chemical Industry
Intermediate at the production of oxalates, oxalyl chloride and pigments.
2. Stone Cleaning
For marble, granite and other natural stone, without attacking the surfaces.
3. Metal Cleaning
For removing rust, scale and oxidation from metal surfaces, especially in the steel and stainless steel industry.
4. Textile Industry
Used as a bleaching agent and for pH neutralization in the finishing process of cotton and wool.
Interessing Links
- CAS Common Chemistry – Ethanedioic acid hydrate (1:2)
- European Chemicals Agency (ECHA) – For chemical information and regulations.
- PubChem – Oxalic acid dihydrate – Chemical information by the National Library of Medicine of the National Center for Biotechnology Information (NIH-NCBI).
- Wikipedia – Oxalic acid