The gelatinous precipitated is washed, converted in to the oxide by ignition, and weighted as Al 2O3.
2.
In dyeing and printing cloth, the gelatinous precipitate helps the dye adhere to the clothing fibers by rendering the pigment insoluble.
3.
When dissolved in a large amount of neutral or slightly alkaline water, aluminium sulfate produces a gelatinous precipitate of aluminium hydroxide, Al ( OH ) 3.
4.
However, iron and aluminum impurities, soluble in concentrated phosphoric acid, form gelatinous precipitates or " sludges " in ammonium polyphosphate at pH between 5 and 7.
5.
Thorium hydroxide, Th ( OH ) 4, can be prepared by adding a hydroxide of ammonium or an alkali metal to a thorium salt solution, where it appears as a gelatinous precipitate that will dissolve in dilute acids, among other substances.
मोबाइल