Significados de mordant with alum en inglés

If a bright yellow green is wanted, then mordant with alum after the indigo bath; if olive green, then mordant with chrome.

Mordant with alum, and dye with 1 lb.

Logwood, also, if mordanted with alum, gives a mauve colour; if mordanted with chrome, it gives a blue.

Prepare by mordanting with alum.

Mordant with Alum or Aluminium Acetate and dye with 40 to 50 per cent Cochineal.

For example:-Cochineal ,ifmordanted with alum, will give a crimson colour; with iron, purple; with tin, scarlet; and with chrome or copper, purple.

Without a mordant the colour is quite fast, but if the wool is mordanted with alum a brighter and richer colour is got.