232 •BSERVATIONS ON MURIATIC ACID. 



It is very folu- and gives out a quantity of gas, together with a fmell of hy- 

 aJcVhV^nYde- P er6 ^g e ^ed muriatic acid. Such a fmell is doubtlefs ow- 

 eompofed at low ing to the great quantity of oxigen contained in the acid ; it 

 temperature. being more than is neceffary to combine with the quantity of 

 hidrogen contained in the alkali, and therefore fome of the 

 Component parts acid is difengaged, without decompofition. All the attempts 

 I have made to afcertain the proportions of fts principles, 

 have been fruitlefs. The formation and exiftence of this fait, 

 as I before faid, are very ftrong proofs of what I have ad- 

 vanced refpec~ting" t the ftate in which hyperoxigenized muriates 

 at firft exift ; and very fully prove the different degree of affi- 

 nity exercifed by each acid toward the bafts. 



unknown, 



Hyp. ex. mur. 



of magnefia. 



Component 

 parts. 



Seventh Species. Hyperoxigenized Muriate of Magnefia. 



Its chemical and phyfical properties are nearly the fame 

 with thofe of the 5th fpecies, only that, in addition to the 

 other bafes, lime and ammonia caufe a precipitate in this fait. 

 Its proportions are, 



Hyperoxigenized muriatic acid - - 6Q 



Magneiia - - - - - 25,7 



Water - * - - ' - ' - - 14,3 



100,0 



Hyp. ox. mur. 



of alumina. 



Eighth Species. Hyperoxigenized M,uriate of Alumina. 



I put fome alumina, precipitated from muriate of alumina, 

 and well warned, but ftill moift, into a Woulfe's apparatus, 

 difpofed as for the other earths, and fent a current of oxige- 

 liized muriatic acid gas through the liquor. The alumina, 

 (hortly difappeared ; and, upon pouring fulphuric acid into 

 the liquor, a ftrong fmell of hyperoxigenized muriatic acid 

 Was perceivable. When I attempted to obtain the fait pure, 

 It is deeempofedby phofphate of filver, in the ujiial way, I found nothing in 

 fcy phofphate of folution bnt hyperoxigenifed muriate of filver * ; and all trio 

 hyperoxigenized muriate of alumina had been decompofed. 

 $s deliquefeent, This fait, however, appears to be very deliquefcent, and is 



»nd foluble in 

 alcohol. 



* This fait fhall be particularly mentioned and defcribed in an- 

 other part of this Paper. For the prefent, it is fufficient to fay, 

 that it is very foluble in water j and, in that property, as in many 

 others, is totally different frorrj, muriate of filver. 



foluble 



