Sulphate-of-soda sentence example
- The essential materials of which these mixtures are made are, for English flint glass, sand, carbonate of potash and red lead; for plate and sheet glass, sand, carbonate or sulphate of soda.
- The materials ordinarily employed are the following: sand, of good quality, uniform in grain and free from any notable quantity of iron oxide; carbonate of lime, generally in the form of a pure variety of powdered limestone; and sulphate of soda.
- A certain proportion of soda ash (carbonate of soda) is also used in some works in sheet-glass mixtures, while " decolorizers " (substances intended to remove or reduce the colour of the glass) are also sometimes added, those most generally used being manganese dioxide and arsenic. Another essential ingredient of all glass mixtures containing sulphate of soda is some form of carbon, which is added either as coke, charcoal or anthracite coal; the carbon so introduced aids the reducing substances contained in the atmosphere of the furnace in bringing about the reduction of the sulphate of soda to a condition in which it combines more readily with the silicic acid of the sand.
- He should keep his bowels regular, or even loose, taking every morning a dose of sulphate of soda in a glass of hot water.
- Manufacture of ordinary alkali from sulphate of soda.Advertisement
- The water is bitter and undrinkable, being largely impregnated with carbonate and sulphate of soda with some borax.
- Amongst the most celebrated saline waters are those of Carlsbad, which contain sulphate of soda and bicarbonate of soda.
- The suggestion made in 1789 by Jean Claude de la Metherie (1743-1817), the editor of the Journal de physique, that this might be done by calcining with charcoal the sulphate of soda formed from salt by the action of oil of vitriol, did not succeed in practice because the product was almost entirely sulphide of soda, but it gave Le Blanc, as he himself acknowledged, a basis upon which to work.
- He soon made the crucial discovery - which proved the foundation of the huge industry of artificial alkali manufacture - that the desired end was to be attained by adding a proportion of chalk to the mixture of charcoal and sulphate of soda.
- This, for instance, holds good of the acid employed in the manufacture of sulphate of soda and hydrochloric acid from common salt, and in the manufacture of superphosphates.Advertisement
- ????\,: v, sulphate of soda (salt-cake) with about the same weight of crushed limestone and half its weight of coal, until the materials are fluxed and a reaction has taken place, the principal phase of which is expressed by the equation Na2S04+CaC03+2C= 2CO 2 +Na 2 CO 3 -+-CaS.