Glyoxal
Specifications
| Item | Index |
| APPEARANCE | CLEAR OR YELLOWISH TRANPARENT LIQUID |
| CHROMA, PT-CO | 20#MAX |
| GLYOXAL, % | 40MIN |
| TOTAL ACIDITY, % | 0.15MAX |
| FORMALDEHYDE, % | 0.2MAX |
| GLYCOL, % | 1.5 |
Packing & Storage
| Packing | In 250kg drum |
| Storage | 20℃, 2 years. |
| Shipping | Room temperature in China; may vary elsewhere |
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General Information
| Common Names | Glyoxal | Ethanedione | 1,2-Ethanedione | ||
| Structure |  | ||
| CAS No. | 107-22-2 | Boiling Point (℃) | 50.0±9.0 °C |
| Molecular Weight | 58.036 | Melting Point (℃) | -14 °C |
| Appearance | Colorless to light yellow liquid | Vapor Specific Gravity | 1.0±0.1 |
| HS Code | 2912190001 | Flash Point (℃) | / |
| Solubility | Soluble in water, easily soluble in common organic solvents. | Autoignition Temperature (℃) | / |
| Safety Phrases | / | ||
| RIDADR | / | ||
| WGK Germany | / | ||
| Packaging Group | / | ||
| Hazard Class | / | ||
| SYMPTOMS | PREVENTION | FIRST AID | |
| Inhalation | Cough. Sore throat. | Use local exhaust or breathing protection. | Fresh air, rest. |
| Skin | Redness. Burning sensation. Itching. | Protective gloves. | Remove contaminated clothes. Rinse and then wash skin with water and soap. |
| Eyes | Redness. Pain. | Wear safety goggles. | First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. |
| Ingestion | Abdominal pain. Nausea. Vomiting. | Do not eat, drink, or smoke during work. Wash hands before eating. | Rinse mouth. Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Refer for medical attention. |
Ethylene glycol gas phase catalytic oxidation method: ethylene glycol and air in the presence of copper catalyst, at 250-300℃ for catalytic oxidation, glyoxal generation: catalyst active group is divided into copper oxide (containing Cu03-8%), the carrier for alumina or with corundum, aluminum sand, with copper nitrate impregnation calcination. The service life is up to one year, and is regenerated by burning. Glycol was preheated and vaporized and mixed with circulating gas into the catalytic reactor to control the addition of fresh air and prevent the deep oxidation of ethylene glycol. Halogen compounds were brought into the reactor with nitrogen flow as the inhibitor of deep oxidation. The reaction was carried out at 275℃ and 0.74MPa pressure. Ethylene glycol has a one-way conversion rate of 80-85%.
Frequently Asked Questions
What is Glyoxal Solution?
Glyoxal is usually sold as a 40% solution.
Uses of Glyoxal
In the Textile Industry
- Glyoxal as a fiber treatment agent can increase the spinning shrinkage and wrinkle resistance of cotton, nylon and other fibers, and is a durable pressing finishing agent.
- Glyoxal reacts with amino acid compounds, aromatic diamine compounds or hydrazine compounds to produce dyes or dye intermediates.
In the Paper Industry
- Adding glyoxal to the sizing agent for sizing can improve the wet/dry strength and tensile strength of paper, and increase its wrinkle resistance by 2 to 3 times.
- Glyoxal is used as a cross-linking agent for starch, cellulose, modified starch and polyvinyl acetate, which can improve the surface water resistance and water resistance of paper.
- Glyoxal can be used to produce offset paper and coated paper.
In Medicine
Glyoxal can be cyclized with other compounds to obtain a series of widely used pharmaceutical raw materials. Glyoxal is cyclized with o-phenylenediamine to obtain benzopyrazine, which is an intermediate of anti-tuberculosis drug pyrazinamide.
In the Oil Industry
- The mixture solution of glyoxal, clay and soda is used as mud for oil field drilling, which can obtain satisfactory viscosity and good gel strength.
- Glyoxal can be used to synthesize petroleum transportation lubricants.