FC is a brown powder which dissolves readily in water or
dilute tan liquors. Heating can accelerate dissolving.
product curtails the duration of vegetable tannage,
clarifies the tan liquors on account of its phlobaphene-dissolving
effect and imparts a paler colour to the leather.
Moreover, it increases the uptake of tanning materials
and improves the efficiency of vegetable and synthetic
Chrome leathers retanned with Jktan FC have a pale
colour, a tight grain and good buffing properties. For
white and lightfast leathers, however, it is advisable
to use Jktan DLE.
Jktan FC dissolves iron and iron salts to colourless
compounds; it can, therefore, be used for removing
patches and for bleaching dull patches caused by iron.