chrome alum
Americannoun
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Also called ammonium chrome alum;. Also called ammonium chromic sulfate. a green, crystalline, water-soluble powder, chromium ammonium sulfate, CrNH 4 (SO4 ) 2 ⋅12H 2 O, used chiefly as a mordant in dyeing.
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a violet, crystalline, water-soluble powder, potassium chromium sulfate, CrK(SO4 ) 2 ⋅12H 2 O, used chiefly as a mordant in dyeing.
noun
Example Sentences
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This he made manifest by looking through a bottle containing solution of chrome alum, when the central portion of the field of view appears of a light red colour for the first second or two.
From Heroes of Science: Physicists by Garnett, William
Then write or draw upon it with an ink containing chrome alum, allow it to dry exposed to light, and immerse the plate in water.
From Paper and Printing Recipes A Handy Volume of Practical Recipes, Concerning the Every-Day Business of Stationers, Printers, Binders, and the Kindred Trades by Ford, J. Sawtelle
It is made sensitive with a bath consisting of one part of chrome alum, 14 parts of water and 4 parts of alcohol.
From Paper and Printing Recipes A Handy Volume of Practical Recipes, Concerning the Every-Day Business of Stationers, Printers, Binders, and the Kindred Trades by Ford, J. Sawtelle
The mixture should be employed immediately after adding the chrome alum.
From Photographic Reproduction Processes by Duchochois, Peter C.
What is the difference between chrome alum and alum crystals.
From Harper's Round Table, August 13, 1895 by Various
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Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
