| 英文名 | p-Cymene |
|---|---|
| 英文别名 | 4-isopropyltoluene |
| 类型 | 芳香族化合物 |
| CAS号 | 99-87-6 |
| 物理性质 | M 134.2, b 177.1℃/760mm, d420 0.8569, nD201.4909, nD251.4885. |
| 提纯方法 | Wash p-cymene with cold, conc H2SO4 until there is no further colour change, then repeatedly with H2O, 10% aqueous Na2CO3 and H2O again. Dry it over Na2SO4, CaCl2 or MgSO4, and distil it. Further purification steps include steam distillation from 3% NaOH, percolation through silica gel or activated alumina, and a preliminary reflux for several days over powdered sulfur. Store it over CaH2. [Beilstein 5 IV 1060.] |
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