Cadmium sulfate hydrate (Cd3SO4•xH2O (x≈8))- Crystalline

Cadmium sulfate hydrate (Cd3SO4•xH2O (x≈8))- Crystalline introduce:

Characteristic




Cadmium sulfate is the name of a series of related inorganic compounds with the formula CdSO4·xH2O. The most common form is the monohydrate CdSO4·H2O, but two other forms are known CdSO4·8⁄3H2O and the anhydrous salt (CdSO4). All salts are colourless and highly soluble in water.




Chemical formula:3CdSO4·8H2O (octahydrate)

Molar mass:769.546 g/mol (octahydrate)

Appearance: White hygroscopic solid

Odor: odorless

Density :3.08 g/cm3 (octahydrate)

Melting point: 40 °C (octahydrate)

Boiling point: (decomposes to basic sulfate and then oxide)

Solubility in water:anhydrous:58.4 g/100 mL (99 °C)

                    monohydrate:76.7 g/100 mL (25 °C)

                    octahydrate:very soluble

Solubility slightly soluble in methanol, ethyl acetate;insoluble in ethanol

Magnetic susceptibility (χ):-59.2·10−6 cm3/mol

Refractive index (nD):1.565




Application




It is used as an electrolyte in a Weston standard cell, a pigment in fluorescent screens. It is used in the manufacture of cadmium salts of fatty acids, pigments, in electroplating of cadmium in electronic circuits. It act as an intermediate, as an accelerator, in the electrode position of nickel & copper, for stabilizing plastics, in cement formation. It has the ability to absorb hydrochloric acid from waste gases from chemical plants.