\ 



C 97 ] 



This acid is dry, cryftallized in hexahaedral 

 plates, almoft infipid, fcarcely foluble, fufible with 

 (ilices into a glafs, very feeble in its affinities, and 

 liable to yield up the terrene and alcaline bafes 

 to almoft any other acid. 



c. Sul- 

 phuric* 



Synonymous Names. 

 "Acid of fulphur, 

 Vitriolic acid. 

 Oil of vitriol. 

 Spirit of vitriol. 



{Sulphureous acid. 

 Volatile fulphureous acid. 

 Phlogifticated vitriolic acid. 

 Spirit of fulphur. 



The sulphuric acid is formed from fulphur 

 and oxygen, by the com bullion of the fulphur; 

 inodorate, twice as heavy as water, and lefs vola- 

 tile, very cauftic ; affording fulphureous acid gas 

 and fulphur, by its decompofition with , red not 

 coal, metals, &c. forming fulphates(%) with the. 

 earths, alkalis, and metallic oxydes. 



Anal. Sulph. 72. Oxygen 28. Berthollet. 



Sulphureous acid is highly odorate,, volatile, 

 gafeous, deftruftive to blue vegetable colours, 

 and fit to clean fe away fpots made with thefe co- 

 lours on a white ground; abforbing, by flow de- 

 grees, the oxygen from the air, and from various 



(I) Salts formed by the combination of the fulphuric acid 

 with different bafes, dccompofable by charcoal, &c. into ful- 

 phures. 



O acids 



