| 英文名 | p-Toluic acid |
|---|---|
| 类型 | 芳香族化合物 |
| CAS号 | 99-94-5 |
| 物理性质 | M 136.2, m 178.5-179.5℃, b 274-275℃/760mm, pK25 4.37. |
| 提纯方法 | Crystallise the acid from water, water/EtOH (1:1), MeOH/water or *benzene. [Beilstein 9 IV 1724.] Aromatic acid impurities (to <0.05%) can be removed via the (±)-α-methylbenzylamine salt as described for 2,4-dichlorobenzoic acid [Ley & Yates Organic Process Research & Development 1 2 120 2008]. The S-benzylisothiuronium salt has m 164℃(from aqueous EtOH). |
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p-Toluic acid提纯方法
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