Complex formed to separate nitrated phenolic compounds from other phenolic compounds
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United States of America Patent
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Jan 29, 1985
Issued Date -
N/A
app pub date -
Jul 23, 1984
filing date -
Apr 26, 1982
priority date (Note) -
Expired
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Abstract
A process is disclosed for separating nitrated phenolic compounds from other nitrated and unnitrated phenolics by treating a mixture of the phenolics with a metal halide salt. The metal halide salt preferentially forms a complex with one of the phenolics over other related phenolics in the mixture. The preferentially-formed complex of one of the phenolics may then be isolated from the mixture and the complex decomposed to provide a product substantially enriched in, or substantially entirely composed of, one phenolic. The process is particularly suitable for resolving a mixture comprising phenol or cresol from their ortho-nitrated derivatives, or a mixture of two isomeric nitrated phenols or cresols or a mixture of mono-and dinitrated phenols or cresols.
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