| 摘要 |
<p>The invention concerns a method for the preparation of chloranil by chlorinating 1 mole of hydroquinone with 4 to about 8 moles of chlorine gas in about 15 to about 37 % by wt. hydrochloric acid at temperatures between about 10 °C and the boiling point of the reaction mixture to form tetrachlorohydroquinone, and by oxidizing the tetrachlorohydroquinone by passing a mixture of gaseous elementary chlorine and air or oxygen through the reaction mixture thus obtained at temperatures of about 80 °C to the boiling point of the reaction mixture.</p> |
