It shows characteristic ketone reactions, yielding a bisulphite compound and combining with hydrocyanic acid to form the nitrile of a-oxyisosuccinic acid.
Rend., 1869, 69, p. 169) obtained the sodium salt by the action of zinc on a concentrated solution of sodium bisulphite: Zn + 4NaHSO 3 = Na 2 S 2 O 4 + ZnSO 3 + Na 2 SO 3 + 2H 2 O, the salt being separated from the sulphites formed by fractional precipitation.
This liquid is concentrated in vacuum pans to a specific gravity of 40° to 44° B., a small quantity of sodium bisulphite solution being added to bleach it, to prevent fermentation, and to inhibit browning.
Phenanthrene-quinone, [C 6 H 4] 2 [CO] 21 crystallizes in orange needles which melt at 198° C. It possesses the characteristic properties of a diketone, forming crystalline derivatives with sodium bisulphite and a dioxime with hydroxylamine.
With sodium bisulphite they form the so-called bisulphite compounds Rï¿½CH(OH)ï¿½SO Na, which are readily resolved into their components by distillation with dilute acids, and are frequently used for the preparation of the pure aldehyde.
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