2007-03-02 02:16:56 · 3 answers · asked by lou 1 in Science & Mathematics ➔ Chemistry
A mordant is a substance used to set dyes. A mordant is either inherently colloidal or produces colloids and can be either acidic or alkaline.
Mordants include tannic acid, alum, chrome alum, sodium chloride, and certain salts of aluminum, chromium, copper, iron, iodine, potassium, sodium, and tin.
2007-03-02 02:26:27 · answer #1 · answered by Kate J 4 · 0⤊ 0⤋
not sure about the chemistry but it fixes the dyestuff to the fabric fibres so it doesn't wash away.
Wikipaedia said:
A mordant is a substance used to set dyes. A mordant is either inherently colloidal or produces colloids and can be either acidic or alkaline.
Mordants include tannic acid, alum, chrome alum, sodium chloride, and certain salts of aluminum, chromium, copper, iron, iodine, potassium, sodium, and tin.
Iodine is used as a mordant to set the first dye in Gram stains.
Phosphomolybdic acid is used as a mordant to set light green when staining with Masson's Trichrome.
2007-03-02 10:26:42 · answer #2 · answered by ordiofile 5 · 0⤊ 0⤋
It is used to seal and also is a black die................
2007-03-02 10:25:26 · answer #3 · answered by gorglin 5 · 0⤊ 0⤋