Product Description
2-Ethyl anthraquinone is a pale yellow solid with a melting point of 108°C, which is lower than that of anthraquinone. It is soluble in benzene and can be purified by recrystallization from ethanol or acetic acid.
Properties
| Melting point | 108-111 °C (lit.) |
| Boiling point | 180-190°C |
| density | 1.27 g/cm3 (21℃) |
| vapor pressure | <1 hPa (25 °C) |
| refractive index | 1.6290 (estimate) |
| Fp | >210°C |
| storage temp. | Store below +30°C. |
| solubility | 0.00025g/l |
| form | powder to crystal |
| color | Light yellow to Amber to Dark green |
| Water Solubility | Insoluble in water. |
| BRN | 1969873 |
| Stability: | Stable. Combustible. Incompatible with strong oxidizing agents. |
| InChIKey | SJEBAWHUJDUKQK-UHFFFAOYSA-N |
| LogP | 4.6 |
| CAS DataBase Reference | 84-51-5(CAS DataBase Reference) |
| NIST Chemistry Reference | 9,10-Anthracenedione, 2-ethyl-(84-51-5) |
| EPA Substance Registry System | 2-Ethylanthraquinone (84-51-5) |
Safety Information
| Hazard Codes | Xn,N |
| Risk Statements | 22-36/37/38-50/53-48/22 |
| Safety Statements | 24/25-36-26-61-60-37 |
| RIDADR | UN 3077 9 / PGIII |
| WGK Germany | 1 |
| RTECS | CB0525000 |
| Autoignition Temperature | 485 °C |
| TSCA | Yes |
| HS Code | 29146990 |
| Toxicity | LD50 orally in Rabbit: > 6400 mg/kg |
Product Application
2-Ethyl anthraquinone is hydrogenated in a solvent to form 2-ethylhydroanthraquinone, which is subsequently reoxidized to regenerate 2-ethylanthraquinone and produce hydrogen peroxide. This industrial process is widely used for the manufacture of hydrogen peroxide.
It can be synthesized via the Friedel–Crafts reaction of phthalic anhydride with ethylbenzene, and can also be obtained through Diels–Alder diene synthesis followed by dehydrogenation of 1,4-naphthoquinone and 2-ethyl-1,3-butadiene.
In addition, it is used in the production of hydrogen peroxide and as an intermediate in dye manufacturing. It also serves as a photosensitizer for photosensitive resins, a catalyst for photocurable resins, a component in photodegradable films and coatings, and as a photopolymerization initiator.
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