Purification of hydroquinone

Details Purification of hydroquinone Purification of hydroquinone

1975-08-13

1978-02-07

Thomas, Jr., James O.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260621H, C07C 3908

Patent

active

040727211

ABSTRACT:
There is disclosed the method of preparing photographic grade hydroquinone from technical grade hydroquinone which consists of treating a solution of the technical grade hydroquinone in the presence of a palladium catalyst with hydrogen while the hydroquinone solution is at a pH between about 3 and about 6.

REFERENCES:
patent: 3437699 (1969-04-01), Flickinger
patent: 3884983 (1975-05-01), Burkholder
patent: 3895079 (1975-07-01), Anderson et al.

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