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Purify the alcohol by distillation, and the distllate crystallises on cooling. The hydrochloride has [] 20 +45.1o (c 4.8, *C6H6). The (-)-hydroperoxide has b58o/0.005mm, n D 1.5123,  D -2.14o, (l = 0.5dcm, neat). [Holding & Ross J Chem Soc 145 1954, Davies & Feld J Chem Soc 4637 1958.] The (±)-racemate has b 73o/0.05mm, and its 4-nitrophenylhydrazone has m 58o. [Beilstein 6 IV 3272.]