Examples from the Web for sulfuric
Sulfuric acid, that there's what ye said—an' that there's what I got.Motor Matt; or, The King of the Wheel|Stanley R. Matthews
Sulfuric acid, if present, will cause the vinegar to leave a charred mass when evaporated over the water-bath.
If this is treated with nitric and sulfuric acids we get from it picric acid, a yellow crystalline solid.Creative Chemistry|Edwin E. Slosson
Vinegars may be adulterated by the addition of mineral acids as sulfuric or hydrochloric.
It must not be hot enough, however, to volatilize the sulfuric acid.