Abstract

The results of studies presented refer to calfskin compact tanning with the aim of producing leather fast to washing in organic solvents. The attempt was made to prepare and apply bifunctional preparations synthesised from chromium nitrate and a liquid fraction of molten pig fat waste. The composition of the preparation was studied using thin-layer chromatography technique and spectrophotometric methods. The technological usability assessment was made on the grounds of test tanning. The leather tanned with the tanning/fatliquoring preparation was fast to washing and contained 6.5% of chemically bonded fat. The bifunctional preparation obtained can also be utilised as a finishing agent for skins in a wet blue state.