270 METHOD OF OBTAINING OXIGENATED MURIATIC ACID.

in liquid oxigcnated muriatic acid; but if light be admitted, thecolour of the acid gradually disappears, and the phosphorus isconverted into phosphoric acid. It thickens oils and animal fats,and renders them less disposed to combine with alcalies. Itsaction upon metals presents phenomena extremely curious andimportant; the oxigen of the acid unites with the metal, andthe produced oxid is afterwards dissolved by the de-oxidated acid.

For the rest of its properties, see oxigenated muriatic acid gas.

METHOD OF OBTAINING OXIGENATEDMURIATIC ACID.

Put into a tubulated retort, supported over a lamp, one partof black oxid of manganese reduced to a gross powder, and pourover it three parts of concentrated muriatic acid, recline the re-tort in such a manner that the fluid which rises up into itsneck, may easily run back again into the body, and apply a re-ceiver with a little distilled W'ater in it; the receiver must beluted to the retort by a fillet of paper. When the effervescence,which instantly takes place on the affusion of the acid ceases,apply a gentle heat. Oxigenated muriatic acid gas will beevolved, and the receiver become filled with yellow vapours,which are absorbed by the water. When the water has acquireda yellowish-green colour, the receiver may be removed, andanother one applied till no more gas is extricated. The processmay be more elegantly conducted by joining the apparatus ofBurkitt or Pepys, to the distillatory vessel. The common mu-riatic acid which may arise is condensed in the first bottle, andthe oxigenated muriatic acid gas unites to the w'ater in the se-cond, third, &c.

The union of oxigenated muriatic acid with different bases',forms salts known by the name of oxigenated muriates