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A salt of sulphuric acid.

A sulphate in which but half the hydrogen of the acid is replaced by a positive element or radical, thus making the proportion of the acid to the positive or basic portion twice what it is in the normal sulphates; an acid sulphate.

A salt of disulphuric or pyrosulphuric acid; a pyrosulphate.

Same as Hydrosulphurent.

A salt of hyposulphuric acid.

A sulphate of the peroxide of any base. [R.]

A salt of pyrosulphuric acid.

A salt well known as a catharic under the name of Glauber's salt, which term is properly applied to the hydrate, Na2SO4.10H2O.

A sulphate with an excess of the base.

An acid sulphate. [Obs.]

A salt of thiosulphuric acid; -- formerly called hyposulphite.

A compact variety or sulphate of lime, or gypsum, of fine texture, and usually white and translucent, but sometimes yellow, red, or gray. It is carved into vases, mantel ornaments, etc.

and destructive to vegetation; and white alkali, characterized by the presence of sodium sulphate (Glauber's salt), which is less injurious to vegetation. Black alkali is so called because water containing it dissolves humus, forming a dark-colored solution which, when it collects in puddles and evaporates, produces c…

A double sulphate formed of aluminium and some other element (esp. an alkali metal) or of aluminium. It has twenty-four molecules of water of crystallization.

A subsulphate of alumina and potash; alunite.

hite fibrous mineral frequently found on the walls of mines and quarries, chiefly hydrous sulphate of alumina; -- also called feather alum, and hair salt.

A native sulphate of lead. It occurs in white or yellowish transparent, prismatic crystals.

A mineral of a white a slightly bluish color, usually massive. It is anhydrous sulphate of lime, and differs from gypsum in not containing water (whence the name).

alts formed from those acids whose names end -ic (excepting binary or halogen acids); as, sulphate from sulphuric acid, nitrate from nitric acid, etc. It is also used in the case of certain basic salts.

Like ink; suitable for making ink. Sulphate of iron (copperas, green vitriol) is called atramentarious, as being used in making ink.