Colophony sentence example
Examples of resin acids are abietic (sylvic) acid, C19H2802, occurring in colophony, and pimaric acid, C20H3002, a constituent of gallipo resin.
Abietic acid can be extracted from colophony by means of hot alcohol; it crystallizes in leaflets, and on oxidation yields trimellitic, isophthalic and terebic acid.
They are largely used in the arts, being separated by distillation into rosin or colophony (see RosiN), and oil or spirit of turpentine.
Colophony -- this is widely present in soldering fumes but also in glues and some floor cleaners.Advertisement