Analytical constants of common fats* 
Fat Melting point 
(oC.)
Saponification number  
(mg KOH/g fat)
Iodine number 
(g iodine/100 g fat)
Vegetable Source
Castor -12 to -10 176-187 81-91
Coconut 23-26 250-264 7.5-10.5
Corn -12 to -10 187-193 103-128
Cottonseed -2 to +2 189-198 99-113
Jojoba 7 92 82
Linseed -20 188-196 155-205
Olive -3 to 0 188-196 80-88
Palm 27-50 195-205 44-54
Peanut -2 188-195 84-100
Safflower -18 to -13 188-194 140-150
Sesame -4 to 0 188-195 103-116
Soybean -23 to -20 189-195 120-141
Tung 4 189-195 160-175
Wheat germ - 179-190 115-129
Animal Source
Beef tallow 40-48 190-199 45-55
Butter 28-35 233-240 25-42
Herring - 179-194 123-142
Lard 33-46 190-202 53-77
Menhaden - 189-193 140-180
Mutton tallow 44-51 192-197 35-46
Neatsfoot -4 190-199 69-76
Salmon - 183-186 130-160
Sardine - 189-193 170-193

*Adapted from chart "Composition and Constants of Fatty Acids," published by Archer Daniels Midland Co., Minneapolis, Minn. Modified from Clark and Switzer, Experimental Biochemistry, 2nd Ed. W.H. Freeman & Co., 1977