SALTS.
430
Book II.
Sp. 3. Camphorat of Soda.
Division II.
THis salt may be formed precisely in the same man
ner as the camphorat of potass.
Prôperties.
It is white and transparent; its taste is somewhat
bitter ; its crystals are irregular.
Water at the temperature-of 60° dissolves less than
th part of ies weight of this salt ; boiling water dis
solves th of its weight. It is also soluble in alcohol.
When exposed to the air it loses its transparency, and
effloresces slightly, but is never completely reduced to
powder.
Heat produces the same effect upon it as on campho
rat of potass : the acid burns with a blue flame, which
becomes reddish towards the end.
It is decomposed by the following salts :
Decomposi- 1. Nitrats of lime, silver.
tion.
2. Muriats of magnesia, barytes, alumina, lime, iron.
3. Sulphats of alumina, iron ; and many other salts with
metallic bases f.
Sp. 4. Campborat of Barytes.
In order to prepare this salt, barytes is to be dissol
ved in water, and camphoric acid added to the solution;
the mixture is then to be boiled, and afterwards filtered
and evaporated to dryness.
Camphorat of barytes does not crystallize; when the
Properties.
evaporation is conducted slowly, the salt is deposited in
thin plates one above another, which appear transpa
rent while immersed in the liquor, but become opaque
whenever they come into contact with the air.
* Ann. de Cbim. xXvii. 26.