Extraction of Carthamin from Carthamus Tinctorus and Investigating Its Dyeing of Wool Using Potassium DI-Chromate Mordant

Abstract

<em>Carthamin, the natural dye of carthamus tinctorius (Golrang) was separated by soxhlet extraction and further purified in good yields. Its mordant dyeing of wool, using potassium dichromate as mordant, showed a high washing fastness (above 4). Mordanting by "sweet chrome", "sour chrome", and "reduced chrome" proved that last one to be superior.</em>