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A Study on the Separation of n-Hexane by Molecular Sieve 5A and the Purification for HPLC use
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
1993, v.6 no.1, pp.21-27
Choi,
B. S., Kim,
Y. M., &
Kim,
S.
T.
(1993). A Study on the Separation of n-Hexane by Molecular Sieve 5A and the Purification for HPLC use. Analytical Science and Technology, 6(1), 21-27.
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Abstract
Technical grade n-hexane whose purity is 54% has been purified for HPLC use. Methylcyclopentane, 2-methylpentane, and 3-methylpentane which are hardly isolated by fractional distillation were separated by the liquid-solid chromatography using molecular sieve 5A. UV and fluorescence impurities whose contents are critically regulated for HPLC solvent were removed by the adsorptive separation with alumina and silica gel. The present method also reduced the impurities of color(APHA), acidity, water, residue after evaporation, sulfur, and thiophene content, and the impurity contents were well within the specifications of HPLC solvent.
- keywords
- n-hexane, HPLC solvent, molecular sieve 5A
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