'Chrome alum' definitions:
Definition of 'chrome alum'
From: WordNet
noun
A violet-colored salt used in hide tanning and as a mordant in dyeing
Definition of 'Chrome alum'
From: GCIDE
- Chrome \Chrome\, n. Same as Chromium. [1913 Webster]
- Chrome alum (Chem.), a dark violet substance, (SO4)3Cr2.K2SO4.24H2O, analogous to, and crystallizing like, common alum. It is regarded as a double sulphate of chromium and potassium.
- Chrome green (a) The green oxide of chromium, Cr2O3, used in enamel painting, and glass staining. (b) A pigment made by mixing chrome yellow with Prussian blue.
- Chrome red, a beautiful red pigment originally prepared from the basic chromate of lead, but now made from red oxide of lead.
- Chrome yellow, a brilliant yellow pigment, PbCrO4, used by painters. [1913 Webster]