... metals, alcohols, glycerol, thiomersal, many surface-active agents, alkalies, peroxides, reducing agents, lanolin, glycol, sugars, amines, iodine, iodides, thiols. Hygroscopic. Hazard Codes ... Description White to slightly yellow crystalline powder with a faint odor. pH (10% solution) 5.5-7.5. Air & Water Reactions ...