They are feeble bases which distil unchanged.
The azines are mostly yellow in colour, distil unchanged and are stable to oxidants.
The mono-nitro compounds are stable and distil without decomposition; they have a pale yellow colour and possess an agreeable odour.
They are mostly crystalline solids which distil unchanged.
C5H11N(+CH31) --> C5HioN(CH3)21 (+AgOH) -- C5H10N(CH3)2.OH (distil) C 5 HiN(CH3)3.
OH -(-i-AgOH)C5H9N(CH3)31E-(-f-CH31)C5H9N(CH3)2 (distil) C1H3+N(CH3)3+H20 J.
Both components come over in a constant proportion until one disappears; it is then necessary to raise the temperature in order to distil the residue.
As the distillation proceeded one layer would diminish more rapidly than the other until only the latter would remain; this would then distil as a completely miscible mixture.
This will then distil at a constant temperature.
They are feeble basic compounds which distil unchanged.
The neutral esters are as a rule insoluble in water and distil unchanged; on the other hand, the acid esters are generally soluble in water, are non-volatile, and form salts with bases.
It is a yellowish-brown oily liquid which commences to distil at 130° C. with partial decomposition into selenium and the tetrachloride.
A violet odour and a fragrant oil were said to distil from her tomb; and when it was opened nine months afterwards the flesh was found uncorrupted.
White not only notes the homes and ways, the times and seasons, of plants and animals - comparing, for instance, the different ways in which the squirrel, the fieldmouse and the nuthatch eat their hazel-nuts - or watches the migrations of birds, which were then only beginning to be properly recorded or understood, but he knows more than any other observer until Charles Darwin about the habits and the usefulness of the earthworms, and is certain that plants distil dew and do not merely condense it.
To obtain the free acid it is best to dissolve the diazohippuramide in dilute soda, warm the solution to ensure the formation of the sodium salt, and distil the resulting liquid with dilute sulphuric acid.
Hofmann is as follows: the mixture is distilled with caustic potash, when the primary, secondary and tertiary amines distil over, and the quaternary ammonium salt remains behind unaffected.
Aromatic Amines.-The aromatic amines in some respects resemble the aliphatic amines, since they form salts with acids, and double salts with platinum chloride, and they also distil without decomposition.
Since many substances decompose either at, or below, their boiling-points under ordinary atmospheric pressure, it is necessary to lower the boiling-point by reducing the pressure if it be desired to distil them.
The nitro compounds are colourless, somewhat pleasant smelling liquids, which distil without decomposition and possess boiling points much higher than those of the isomeric nitrous esters.
They crystallize in plates, and for the most part distil without decomposition.
On distilling such a mixture, a mixture of constant composition will distil first, leaving in the distilling flask one or other of the components according to the composition of the mixture.