Chemistry Applied to Arts And Manufactures volume 4
Chemistry Applied to Arts And Manufactures volume 4
Jean Antoine Claude Chaptal
The book Chemistry Applied to Arts And Manufactures volume 4 was written by author Jean Antoine Claude Chaptal Here you can read free online of Chemistry Applied to Arts And Manufactures volume 4 book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Chemistry Applied to Arts And Manufactures volume 4 a good or bad book?
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22^ replaced by others, in proportion as they are wasted. When the liquor marks 70 degrees of con- centration, a small portion of it may be set aside in a glass capsule to cool, to enable us to judge whether the evaporation has baen car- jied to a sufficient length. When the liquor has been evaporated to a certain point, it is transferred into eartheru Tessels to crystallize. It runs together into a mass ; and after leaving it at rest for two dajs, the vessels are placed in a slanting position ...to favour the etflux of the mother water fiom the crystals. This may be still further fLicilitated by making openings in the mass with a knife. In proportion as the crystals are deprived of the black mother water, they assume a white colour, and present a dry mass, or aggrega- tion of glossy crystals of a greyish white. This salt differs, in appearance, from tha!: which is prepared in Holland. This last suit forms heavy compact masses, composed oi hivgc irregular crystnls. It not unfreqi^jntly happens, that the con- centrated solution will not crvstallize : hut 224- CHEMISTliV degenerates into a magma, or jelly.
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