Production of syringealdehyde from hardwood waste pulping liquor

Details Production of syringealdehyde from hardwood waste pulping liquor Production of syringealdehyde from hardwood waste pulping liquor

1976-09-07

1978-02-21

Helfin, Bernard

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260600A, C07C 4500

Patent

active

040752488

ABSTRACT:
Syringealdehyde and vanillin are produced from alkaline or neutral sulphite waste liquors by alkaline oxidative treatment of the liquor and subsequent isolation of a mixture of the aldehydes. Syringealdehyde is separated from vanillin by fractional distillation.

REFERENCES:
patent: 2506540 (1950-05-01), Bryan
patent: 2576752 (1951-11-01), Fisher et al.
patent: 2692291 (1954-10-01), Bryan
A.T.S. translation of: Kamaldina, Khim. Navka i Pron., vol. 2, No. 4, (1957), pp. 462-465.

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