Waxes,Fats,and Oils Structures of some common fatty acids TABLE 23.1 Structures of Some Common Fatty Acids No.of Melting Name carbons point (C) Structure Saturated Lauric 12 43.2 CH3(CH2)10CO2H Myristic 14 53.9 CH3(CH2)12CO2H Palmitic 16 63.1 CH3(CH2)14CO2H Stearic 18 68.8 CH3(CH2)16CO2H Arachidic 20 76.5 CH3(CH2)18CO2H Unsaturated Palmitoleic 16 -0.1 (Z)-CH3(CH2)sCH-CH(CH2)7CO2H Oleic 18 13.4 (Z)-CH3(CH2)7CH-CH(CH2)7CO2H Linoleic 18 -12 (Z,Z)-CH3(CH2)4(CH-CHCH2)2(CH2)6CO2H Linolenic 18 -11 (all Z)-CH3CH2(CH-CHCH2)3(CH2)6CO2H Arachidonic 20 -49.5 (all Z)-CH3(CH2)4(CH-CHCH2)4CH2CH2CO2H Structures of some common fatty acids Waxes, Fats, and Oils