Appearance : Brown to dark brown Physical Status : Liquid Flash Point : >93C Refractive Index : 1.505 - 1.515 @20C Relative Density : 0.950 - 0.951 @20C Optical Rotation : -48 to -65C Solubility in Alcohol : 1 : 9 Solubility in Water : Insoluble Acid Value :