Liquefied by hygroscopic agglomeration. Becomes brown when melting, later turns to green gradually, still turns white after cooling.1g dissolves in 0.5ml ace*tone, 12ml ethanol, 8ml boiling ethanol. Soluble in water. When dissolved in its own weight of water, the temperature drops about 30 �ºC. Aqueous solution is neutral. Low toxicity, LD50 (rat, oral) 854mg/kg. Prepare thiocyanate titrants. Determine trivalent iron, copper and silver. Urine test. Tungsten color developer. Indicator for volumetric determination of titanium. Cooling agent. Photographic thickening agent.