The term “ice colors” is also sometimes used to refer to azoic dyes because ice can be used to produce the the low temperature required in their application.
The results of research show that the impurity of infusibility and metal ion has been removed after the leaching of calcium carbide residue, and the transform rate of hydrated lime up to about 88%.
This makes sense because silver also makes insoluble compounds with bromine and iodine, which are in the same column of the periodic table as chlorine.
Where conditions were right, silver ions in the water reacted with ionic compounds, or salts, in the limestone to make insoluble silver compounds that fell out of solution.