Purification of acetonitrile by a distillative recovery/ion...

Details Purification of acetonitrile by a distillative recovery/ion... Purification of acetonitrile by a distillative recovery/ion...

2003-08-26

2009-02-17

Wilson, James O. (Department: 1624)

Organic compounds -- part of the class 532-570 series

Organic compounds

Nitriles

Reexamination Certificate

active

07491838

ABSTRACT:
A process of producing HPLC grade acetonitrile (UV cutoff<190) comprising a multistep distillation under reflux conditions followed by acidic ion exchange resin treatment to remove essentially all impurities from the acetonitrile.

REFERENCES:
patent: 3313726 (1967-04-01), Campbell et al.
patent: 4362603 (1982-12-01), Presson et al.
patent: DD 259 530 (1988-08-01), None

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