Color by lovibond comparator : ww softening point ring and ball : 78 °c (min) impurity solubility in toluen : 0.05% (max) acid value : 160 – 190 saponification value : 170 – 22 0 iodine value : 5 – 25 ash content : 0.04 % (max) volatile oil content : 2 % (max).