... .04% 0.050% Max NH3 0.5% Max 0.4% 0.45% Water-insoluble matter 0.04% Max 0.02% 0.010 ... greasy, odorless and tasteless, soluble in water, alcohol, glycerol ether and volatile oil, the water solution indicating weak acidity, when heating to ... the ceramics. 3.It may be used in medical industry. 4.It may be used in smelting, metal welding, leather and ...