"' Abietane "'is a diterpene that forms the structural basis for a variety of natural chemical compounds such as abietic acid, carnosic acid, and ferruginol which are collectively known as abietanes or abietane diterpenes.
12.
Normally crude tall oil contains rosins ( which contains resin acids ( mainly abietic acid and its isomers ), fatty acids ( mainly palmitic acid, oleic acid and linoleic acid ) and fatty alcohols ), unsaponifiable sterols ( 5-10 % ), some sterols, and other alkyl hydrocarbon derivates.
13.
A mixture of organic acids ( resin acids, predominantly abietic acid, with pimaric acid, isopimaric acid, neoabietic acid, dihydroabietic acid, and dehydroabietic acid ), rosin is a glassy solid, virtually nonreactive and noncorrosive at normal temperature, but liquid, ionic and mildly reactive to metal oxides at molten state.
