chrome alum

[ krohm al-uhm ]

noun

1. Also called ammonium chrome alum;. a green, crystalline, water-soluble powder, chromium ammonium sulfate, CrNH 4 (SO 4 ) 2 ⋅12H 2 O, used chiefly as a mordant in dyeing.
2. a violet, crystalline, water-soluble powder, potassium chromium sulfate, CrK(SO 4 ) 2 ⋅12H 2 O, used chiefly as a mordant in dyeing.

chrome alum

noun

1. a violet-red crystalline substance, used as a mordant in dyeing. Formula: KCr(SO 4 ) 2 .12H 2 O

Example Sentences

This liquor has a greater plumping effect on the leather than the chrome alum liquor has.

From Project Gutenberg

A favourite mixture consists of chrome alum and sodium carbonate (common soda).

From Project Gutenberg

To illustrate the matter, the case of a basic chrome alum liquor will be considered.

From Project Gutenberg

Of the first type the most common is that in which chrome alum (a bye-product of the dyeing industry) is the starting-point.

From Project Gutenberg

The disadvantage of this liquor is the limited solubility of chrome alum and the need for its solution in the cold.

From Project Gutenberg