Views: 0 Author: Site Editor Publish Time: 2023-03-25 Origin: Site
Para-benzoquinone, also known as 1,4-benzoquinone and 1,4-benzenedione, is an organic compound with the chemical formula C6H4O2.Pure para-benzoquinone is bright yellow crystals with a pungent odour similar to that of chlorine gas; impure samples are often dulled by the presence of quinone hydroquinone (a 1:1 charge-transfer complex formed by para-benzoquinone and hydroquinone). The p-benzoquinone contains a non-aromatic six-membered ring, which is an oxidation product of hydroquinone (hydroquinone).
Physicochemical properties
Melting point: 113-115°C
Boiling point: 174°C
Flash point: 59.3℃
Density: 1.32g/cm3
Refractive index: 1.543
Critical pressure: 5.96MPa
Ignition temperature: 560°C
Upper explosion limit (V/V): 13.5 per cent
Lower Explosion Limit (V/V): 1.7％
Appearance: yellow to green crystalline solid
Solubility: Slightly soluble in water, soluble in hot water, ethanol, ether, alkaline solution
| Item | Specifications |
| Appearance | Yellow crystal powder |
| Content | ≥99.0% |
| Melting point | 112.0-116.0℃ |
| Ash | ≤0.05% |
| Loss on drying | ≤0.5% |
Uses
1.1,4-benzoquinone is used as intermediate of dyestuff and medicine. Manufacture of hydroquinone and rubber antioxidant, acrylonitrile and vinyl acetate polymerisation initiator and oxidant.
2. It is used for qualitative determination of toxaphene, pyridine, azamethine, tyrosine and hydroquinone. It is used for the determination of amino acid in analysis. 99% and 99.5% high purity grade is used for the photometric determination of amine.
3.1,4-benzoquinone can be used to make hydroquinone.
4.Manufacture of antifungal agents and analytical reagents
1,4-Benzoquinone Packaging and Shipping
25kg/Drum.
1,4-Benzoquinone Storage
Warehouse ventilation, dry at low temperature.