APPEARANCE:TRANSPARENT OR SLIGHTLY TURBID COLOUR:NOT DARKER THAN A FRESHLY PREPARED SOLUTION CONTAINING:0.4GM K2CR2O7 IN 100ML,CONC.H2SO4(S.G 1.84) SPECIFIC GRAVITY (20/4 DEGREES C): 0.9360-0.9395 REFRACTIVE INDEX (20 DEGREES C): 1.5170-1.5225 IODINE VALUE (WIJS): 163-173 SAPONUFICATION VALUE: 190-195 MOISTURE AND INPURITIES: 0.3%MAX FREE FATTY ACIDS: 2.5%MAX WORSTALLS HEAT TEST: 7.5 MIN.MAX BETA TUNG OIL TEST: NEGATIVE (NO CRYSTALLINE PRECIPTIATE) Packing: In new or old iron drum.