Melting Points Aliphatic acids with more than 8 carbons are solids at room temperature. Double bonds (especially cis)lower the melting point.Note these 18-C acids: >Stearic acid (saturated):72C >Oleic acid (one cis double bond):16C >Linoleic acid (two cis double bonds):-5C => Chapter 20 9 Chapter 20 9 Melting Points • Aliphatic acids with more than 8 carbons are solids at room temperature. • Double bonds (especially cis) lower the melting point. Note these 18-C acids: ➢Stearic acid (saturated): 72C ➢Oleic acid (one cis double bond): 16C ➢Linoleic acid (two cis double bonds): -5C =>