Anthracene ketone (c14h10o), colorless needle-like crystals. The melting point is 155 ℃, soluble in most organic solvents and hot sodium hydroxide solution, insoluble in water. No fluorescence, the presence of fluorescence is caused by anthracene phenol. It can be used for organic synthesis, and is used for colorimetric determination of starch in sugar and animal body fluids. The following reactions are obtained from Anthraquinone: 104g anthraquinone, 100g tin grains, 750ml glacial acetic acid mixed heating to boiling, and then add a concentrated HCl 250ml (relative density of 1.19), about 2h added, at this time anthraquinone should be all dissolved in the reaction solution, otherwise, the need to add tin and hydrochloric acid. Reflow 1.5h, Decolorization filtration, filtrate with 100ml water dilution, cooling to 10 ℃, precipitated anthracene ketone crystallization, filtration, with washing to ph=7 and get coarse crystal, dry heavy 80g. Coarse products can be acetone or benzene and petroleum ether (3:1) Mixed liquid recrystallization, the melting point of 154-155 ℃ of anthracene ketone about 60g.