Title: Ammonium Palmitate
CAS Registry Number: 593-26-0
CAS Name: Hexadecanoic acid ammonium salt
Additional Names: palmitic acid ammonium salt
Molecular Formula: C16H35NO2
Molecular Weight: 273.45
Percent Composition: C 70.28%, H 12.90%, N 5.12%, O 11.70%
Line Formula: CH3(CH2)14COONH4
Literature References: Prepn from palmitic acid and excess 28-30% NH3 soln: Stumpf, Am. Paint J. 38, No. 45, 60, 64, 68 (1954), C.A. 48, 12428b (1954); from palmitic acid and ammonium carbonate: Reiling, US 3053867 (1962 to Boston Chem. Prods.).
Properties: Yellow-white powder, softens at 38-40°F, mp 70-73°F. At 80°F: sol in water; slightly sol in benzene, xylene; practically insol in acetone, ethanol, methanol, CCl4, naphtha. Sol in water at 212°F, acetone at 134°F, ethanol at 172°F, methanol at 148°F, benzene at 176°F, CCl4 at 170°F, xylene at 180°F, naphtha at 160°F.
Melting point: mp 70-73°F
Use: Waterproofing fabrics, thickening lubricants.