9 RegisterLog in Sign up with one click: Facebook Twitter Google Share on Facebook Thesaurus Medical Idioms Encyclopedia Wikipedia shel·lac alsoshel·lack(shə-lăk′) n. 1.A purified lac in the form of thin yellow or orange flakes, often bleached white and widely used in varnishes, ...
Ester and acid/ketone groups account for the C=O stretching bands respectively at 1735 and 1715 [cm.sup.-1], appearing as an overlapping band in the shellac wax spectrum, and for the C-O bands in the 1172 [cm.sup.-1] region. Beeswax and shellac wax spectra show two close narrow max...