It is prepared on the industrial scale for the manufacture of sulphuric acid, for the preparation of sodium sulphate by the Hargreaves process, and for use as a bleaching-disinfecting agent and as a preservative.
Hargreaves of the Somerset Light Infantry, starting from Leh as Captain C. a base, carried out careful survey work (their chief G.
In the 18th century the ability of certain natives of the town greatly fostered its cotton industry; thus James Hargreaves here probably invented his spinning jenny about 1764, though the operatives, fearing a reduction of labour, would have none of it, and forced him to quit the town for Nottingham.
Much was expected at one time from the " direct salt-cake process " of Hargreaves and Robinson, in which common salt is M111111111111N01N1111??IIUilllllllf.111IIIIIIIIIIIIIIIMIIIIIIIIIIIIIIIIIIIillllllllillllllllllll1111111111111111l?iiiiiiillumismuriiiiiiiii???!II?!iiil I I?
This means that the previous manufacture of sulphuric acid in the vitriol-chambers is done away with, but this apparently great simplification is balanced by the great cost of the Hargreaves plant, and by the fact that the whole of the hydrochloric acid is mixed with nine or ten times its volume of inert gases.
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