Physical properties of sulfates
Release time:
2025-06-05
Crystal structure: Most sulfate minerals have low symmetry in their crystal structure, mainly belonging to the monoclinic and orthorhombic crystal systems.
Crystal structure: Most sulfate minerals have low symmetry in their crystal structure, mainly belonging to the monoclinic and orthorhombic crystal systems.
Hardness and specific gravity: Hardness is generally low (2-3.5), specific gravity is small (2-4), and minerals containing barium and lead can have a specific gravity of over 4.
Color: Usually colorless or white, yellow brown or blue-green when containing iron, blue-green when containing copper, and red when containing manganese or cobalt.
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Industrial use: Sodium sulfate is used in the manufacture of water glass, glass, porcelain glaze, pulp, refrigeration mixtures, detergents, desiccants, dye diluents, analytical chemical reagents, etc.
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Formation conditions and sources of sulfates
Exogenous genesis: The surface is the main formation area, and sulfate minerals formed by the oxidation of primary metal sulfides account for nearly half of this type of mineral.
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Physical properties of sulfates
Crystal structure: Most sulfate minerals have low symmetry in their crystal structure, mainly belonging to the monoclinic and orthorhombic crystal systems.
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According to the different metal ions, sulfites can be divided into normal salts (such as sodium sulfite and potassium sulfite) and acid salts (such as sodium bisulfite).
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Food industry: Sulfites are widely used as food additives in wine, beer, dried fruits, pickled foods, bottled and canned foods, and seasonings, mainly for bleaching, anti-corrosion, antioxidant, and anti browning effects. For example, in wine making, sulfites can prevent oxidation and microbial contamination; In dried fruit processing, the color and flavor of the fruit can be maintained.
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