PROPERTIES OF SULPHURIC ACID.

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SULPHURIC. ACID.

PART LXXVIII.

SlJLPHUR is capable of combining with two different propor-tions of oxigen; with the smaller quantity it forms sulphureousacid; with the larger, sulphuric acid. The last of these is thesubject of our first enquiry.

PROPERTIES OF SULPHURIC ACID.

Sulphuric acid is in the form of a dense liquid, slightly viscid;it runs in striae, like oil, when poured from one vessel intoanother. Its specific gravity is in general 1.85, at least it isprepared of that strength in some of our principal manufactures.*In its pure state it is colourless and void of odour. It is of con-siderable fixity in the fire, and requires a strong heat for ebul-lition. On being mingled with water heat is instantaneouslyevolved, (vol. I. p. 51.) It is not altered by oxigen, nitrogen, orVol. 11 . S

By Mr. Sandman in Queen Street, and Mr. Dobbs, Maid Lane, Borough.