... Form: LiquidPhysical Appearance: Oily, colorless, odorless liquidSolubility: Soluble in water and alcohol. Insoluble in benzene, ether, chloroform, fixed and ... volatile oils. Absorbs water from the air. Also absorbs hydrogen sulfide, hydrogen cyanide and ... a concentration of 5-10%, glycerol is used to increase the density of a sample so that it will layer at ...