19.06.2013 Views

A Manual of the Chemistry of the Carbon Compounds

A Manual of the Chemistry of the Carbon Compounds

A Manual of the Chemistry of the Carbon Compounds

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

THE CARBON COMPOUNDS. <br />

fO-OC 9H,OH i<br />

0 H<br />

Azo-compounds have ei<strong>the</strong>r a red or blue colour, and yield, by<br />

reduction, colourless hydrazo-connxmnds; <strong>the</strong>ir colour is, <strong>the</strong>refore,<br />

due to <strong>the</strong> double linking <strong>of</strong> <strong>the</strong> nitrogen-atoms:—<br />

Azobcnzono Hjjrazobonzcno<br />

{ml). (colourless).<br />

»-Q,U3<br />

HN-C0H6<br />

N-C,HS<br />

HN-C0HB<br />

ludigotin Hydro-indigotiu<br />

(blue). (colourless).<br />

N—CaH..CO.CH<br />

II !<br />

0 4<br />

Maftdala-veil.<br />

HN—(LH..CO.CH<br />

I H<br />

HN-—C0H4.CO.CH<br />

AzoJipli AzoJiplicnyMilue.<br />

N-C10H7<br />

N-O.il,<br />

N-CWH6.NHCC1OH7)<br />

Similar relations exist undoubtedly between rosaniline and leueanime,<br />

and betweea <strong>the</strong> phenol-ooloura and <strong>the</strong>iv products <strong>of</strong> reduction.<br />

OBSTRUCTIVE,' Dt8TIUAT10N.<br />

When aon-volatile carbon-conipounds are heated, <strong>the</strong>y undergo decomposition,<br />

and are resolved into different prodncts, varying with <strong>the</strong><br />

nature <strong>of</strong> <strong>the</strong> substance as well as with <strong>the</strong> mode <strong>of</strong> heating.<br />

The destructive or dry distillation <strong>of</strong> coal, bituminous shale, wood,<br />

peat, &c, is carried on for <strong>the</strong> purpose <strong>of</strong> obtaining illuminating gas,<br />

as well as <strong>the</strong> liquid and solid products.

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!