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- W1488589618 abstract "Gas and liquid chromatographic methods for the resolution and determination of xylidine isomers are described. The gas chromatographic method of choice involves a derivatization of xylidines with N-methylbistrifluoroacetamide, followed by immediate injection onto an Apiezon—Carbowax column. 3,4-Xylidine, the major compound of concern, is clearly separated from its isomers. Modification of this procedure allows for the determination of 3,4-xylenol as well. The later can occur in low levels in samples of 3,4-xylidine. The optimum liquid chromatographic method involves the used of a normal-phase column and a solvent system consisting of methylene chloride—hexane—ethyl acetate (74:25:1). Detection is at 254 nm. This method resolves the six xylidine isomers in underivatized form." @default.
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- W1488589618 date "1982-08-01" @default.
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- W1488589618 title "Separation and determination of xylidine isomers" @default.
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- W1488589618 doi "https://doi.org/10.1016/s0021-9673(00)88017-6" @default.
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