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Llibres Llibres 1 - 10 de 15 sobre ... and heat the whole to ebullition. When the lac is dissolved, cool the solution,....
" ... and heat the whole to ebullition. When the lac is dissolved, cool the solution, and impregnate it with chlorine, till the lac is all precipitated. The precipitate is white, but its colour... "
The Chemical News and Journal of Industrial Science; with which is ... - Pągina 95
1864
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Gill's technological [afterw.] Gill's scientific, technological ..., Volum 1

Gill's scientific, technological and microscopic repository, Thomas Gill (patent-agent) - 1827
...the resin, might be very advantageously combned. Mode of bleaching Shell or Seed-Lac.—Dissolve,. in an iron kettle, one part of pearlash, in about eight parts of water, add one part of shell, or seed-lac, and heat the whole to ebullition. Wh<^n the lac is dissolved, cool the solution,...
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The Register of Arts, and Journal of Patent Inventions, Volum 1

Luke Herbert - 1828
...processes, that of making the salt, and of bleaching the resin, might be very advantageously combined. Dissolve, in an iron kettle, one part of pearlash...about eight parts of water ; add one part of seed or shell lac, and heat the whole to ebullition. When the lac is dissolved, cool the solution, and impregnate...
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Iron: An Illustrated Weekly Journal for Iron and Steel ..., Volum 8

Perry Fairfax Nursey - 1828
...nothing to desire, excepting, perhaps, on the score of economy. Dr. Hare's method is as follows: — Dissolve, in an iron kettle, one part of pearlash in about eight parts of water ; add one part of shell or seed lac, and heat the whole to ebullition. When the lac is dissolved, cool tbe solution,...
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The Edinburgh Encyclopędia Conducted by David Brewster, with the ..., Volum 18

1832
...advantageously combined. Method of bleaching shell, or teed lac. By R. VOL. XVIII. PART I. HARE, MD — Dissolve, in an iron kettle, one part of pearlash in about eight parts of water, add one part of shell, or seed lac, and heat the whole to ebullition. When the lac is dissolved, cool the solution,...
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The Family Physician, Or Every Man His Own Doctor: In Three Parts : Part I ...

Daniel H. Whitney - 1835 - 599 pągines
...brush. To stain paper purple. Use a tincture of logwood. 255. Hare's method of bleaching shell lax. Dissolve in an iron kettle one part of pearlash in about eight parts of water, add one part of shell or seed lac, and Iieat the whole to boiling. When the lac is dissolved, cool the solution and...
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The Engineer's and Mechanic's Encyclopędia: Comprehending ..., Volum 2

Luke Hebert - 1835
...and of bleaching the resin, might be advantageously combined " Dissolve," (says Dr. Hare,) " in аи iron kettle, one part of pearl-ash in about eight parts of water ; add one part of seed or shell-lac, and heat the whole to ebullition ; when the lac is dissolved, cool the solution, and impregnate...
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The engineer's and mechanic's encyclopędia, Volum 2

Luke Hebert - 1836
...salt and of bleaching the resin, might be advantageously combined. " Dissolve," (says Dr. Hare,) " in an iron kettle, one part of pearl-ash in about eight parts of water ; add one part of seed or shell-lac, and heat the whole to ebullition ; when the lac is dissolved, cool the solution, and impregnate...
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The Decorator's assistant

...usea instead of the shell-lac varnish alone, as a vehicle in painting. 65. White Shell-lac Varnish. Dissolve in an iron kettle one part of pearlash in about eight parts of water; add one part of shell-lac, and heat the whole to ebullijtion. When the lac is dissolved, cool the 'solution, and impregnate...
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Chemistry, Theoretical, Practical, and Analytical: As Applied and ..., Volum 2

Sheridan Muspratt, Eben Norton Horsford
...it through fine blotting-paper. Dr. HARE proceeds as follows : — Dissolve in an iron kettle about one part of pearlash in about eight parts of water, add one part of shell or seed lac, and heat the whole to ebullition. When the lac is dissolved, cool the solution,...
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A Practical Workshop Companion for Tin, Sheet Iron, and Copper Plate Workers...

Leroy J. Blinn - 1866
...it through fine blotting-paper. Dr. Hare proceeds as follows: — Dissolve in an iron kettle about one part of pearlash in about eight parts of water, add one part of shell or seed lac, and hi'ai the whole to ebullition. When the lac U dissolved, cool the solution,...
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