Sulphate

Barium sulfate is a white crystalline solid with the chemical formula BaSO4. It is insoluble in water and other traditional solvents but is soluble in concentrated sulfuric acid. The mineral barite is composed largely of barium sulfate and is a common ore of barium. It is often extracted in a blast furnace, as it can cope with high temperature.

Chromium(III) sulfate usually refers to the inorganic compound with the formula Cr2(SO4)3 • 12(H2O). This purple solid consists of the hydrated sulfate salt of [Cr(H2O)6]3+ ion. It is widely used in the tanning of leather.

Cadmium sulfate is used widely in industries for the electroplating of cadmium in electronic circuits. It is also known as the hydrated form, CdSO4.8/3H2O. Cadmium sulfate is very rarely found naturally in from of tetrahydrate mineral called drobecite and as basic salt in the mineral Niedermayrite. It is used as a pigment.

Calcium sulfate is a common laboratory and industrial chemical. In the form of γ-anhydrite (the nearly anhydrous form), it is used as a desiccant. It is also used as a coagulant in products like tofu.[1] In the natural state, unrefined calcium sulfate is a translucent, crystalline white rock. When sold as a color-indicating variant under the name Drierite, it appears blue or pink due to impregnation with cobalt chloride, which functions as a moisture indicator.

Cerium(IV) sulfate, also called ceric sulfate, is a yellow to yellow/orange chemical compound. It exists as the anhydrous salt Ce(SO4)2; a few hydrated forms are also known: Ce(SO4)2 ⋅ xH2O, with x equal to 4, 8, or 12. Ceric sulfate is available commercially.

Cerium(IV) sulfate, also called ceric sulfate, is a yellow to yellow/orange chemical compound. It exists as the anhydrous salt Ce(SO4)2; a few hydrated forms are also known: Ce(SO4)2 ⋅ xH2O, with x equal to 4, 8, or 12. Ceric sulfate is available commercially.

Chromium(III) sulfate usually refers to the inorganic compound with the formula Cr2(SO4)3
• 12(H2O). This purple solid consists of the hydrated sulfate salt of [Cr(H2O)6]3+ ion. It is widely used in the tanning of leather.

Cobalt(II) sulfate is the sulfate salt of divalent cobalt.Anhydrous cobalt(II)sulfate appears as red monoclinic crystals that melt at 96.8°C and become anhydrous at 420°C. It is soluble in water, slightly soluble in ethanol, and especially soluble in methanol.