
Cas 84-51-5/Ethylanthraquinone is an anthraquinone-type organic compound with the chemical formula C₁₆H₁₂O₂ and a molecular weight of 236.27. It appears as pale yellow to orange crystals or powder, is insoluble in water, and readily soluble in organic solvents. Its key characteristic is reversible hydrogenation – Oxidation-reduction cycling capability. It serves as the key working medium in the anthraquinone process for hydrogen peroxide production (accounting for over 95% of global H₂O₂ production capacity) and is also used in fields such as dye intermediates, photocurable resin catalysts, and photodegradable materials. It is an important basic raw material for fine chemicals and organic synthesis.
| Item | Specification |
| Melting point | 108–111°C (lit.) |
| Boiling Point | 180–190°C (1 mmHg) |
| Density | 1.27 g/cm³ (21°C) |
| Flash point | >210°C |
| Vapor Pressure | 4.14×10⁻⁷ mmHg (25°C) |
| Refractive Index | 1.6290 |
| Water Solubility | 0.00025 g/L, insoluble in water |
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