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Ammonium Sulfate
Chemical Name: Ammonium Sulfate
Molecular Formula: (NH4)2SO4
Molecular Weight: 132.14
CAS：7783-20-2
Character: It is colorless transparent orthorhombic crystal,deliquescent. The relative density is 1.769(50℃). It’s easily soluble in water(At 0℃, solubility is 70.6g/100mL water; 100℃, 103.8g/100mL water). Aqueous solution is acidic. It’s insoluble in ethanol, acetone or ammonia. It reacts with the alkalies to form ammonia.
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Copper Sulfate
Chemical Name: Copper Sulfate
Molecular Formula: CuSO4·5H2O
Molecular Weight: 249.7
CAS：7758-99-8
Character: It’s dark blue triclinic crystal or blue crystalline powder or granule. It smells like nasty metal. It effloresces slowly in dry air. Relative density is 2.284. When above 150℃, it loses water and form Anhydrous Copper Sulfate which absorbs water easily. It’s soluble in water freely and aqueous solution is acidic. PH value of 0.1mol/L aqueous solution is 4.17（15℃）. It’s soluble in glycerol freely and dilute ethanol but insoluble in pure ethanol.
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Zinc Sulfate
Chemical Name: Zinc Sulfate
Molecular Formula: ZnSO4·H2O ; ZnSO4·7H2O
Molecular Weight: Monohydrate: 179.44 ; Heptahydrate: 287.50
CAS：Monohydrate:7446-19-7 ; Heptahydrate:7446-20-0
Character: It is colorless transparent prism or spicule or granular crystalline powder, odorless. Heptahydrate: The relative density is 1.957. Melting point is 100℃. It’s easily soluble in water and aqueous solution is acidic to litmus. It’s slightly soluble in ethanol and glycerin. The monohydrate will lose water at temperatures above 238℃; The Heptahydrate will be effloresced slowly in the dry air at room temperature.
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Magnesium Sulfate
Chemical Name: Magnesium Sulfate
Molecular Formula: MgSO4·7H2O; MgSO4·nH2O
Molecular Weight: 246.47(Heptahydrate）
CAS：Heptahydrate：10034-99-8; Anhydrous：15244-36-7
Character: Heptahydrate is colorless prismatic or needle-shaped crystal. Anhydrous is white crystalline powder or powder. It’s odorless, tastes bitter and salty. It is freely soluble in water (119.8%, 20℃) and glycerin,slightly soluble in ethanol. The aqueous solution is neutral.
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Sodium Metabisulfite
Chemical Name: Sodium Metabisulfite
Molecular Formula: Na2S2O5
Molecular Weight: Heptahydrate :190.107
CAS：7681-57-4
Character: White or slightly yellow powder, have odor, soluble in water and when dissolved in water it forms sodium bisulfite.
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Ferrous Sulfate
Chemical Name: Ferrous Sulfate
Molecular Formula: FeSO4·7H2O; FeSO4·nH2O
Molecular Weight: Heptahydrate :278.01
CAS：Heptahydrate:7782-63-0; Dried: 7720-78-7
Character: Heptahydrate: It’s blue-green crystals or granules, odorless with astringency. In dry air, it’s efflorescent. In moist air, it oxidizes readily to form a brown-yellow, basic ferric sulfate. It’s soluble in water, insoluble in ethanol.
Dried: It’s gray-white to beige powder. with astringency. It is mainly composed of FeSO4·H2O and contains a few of FeSO4·4H2O.It’s slowly soluble in cold water (26.6 g / 100 ml, 20 ℃), It will be dissolved quickly when heating. It’s insoluble in ethanol. Almost insoluble in 50% sulfuric acid.
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Potassium Sulfate
Chemical Name: Potassium Sulfate
Molecular Formula: K2SO4
Molecular Weight: 174.26
CAS：7778-80-5
Character: It occurs as colorless or white hard crystal or as crystalline powder. It tastes bitter and salty. Relative density is 2.662. 1g dissolves in about 8.5mL of water. It’s insoluble in ethanol and acetone. The pH of 5% aqueous solution is about 5.5 to 8.5.
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Sodium Aluminum Sulfate
Chemical Name: Aluminum Sodium Sulfate, Sodium Aluminum Sulfate,
Molecular Formula: NaAl(SO4)2, NaAl(SO4)2.12H2O
Molecular Weight: Anhydrous: 242.09; Dodecahydrate:458.29
CAS：Anhydrous:10102-71-3; Dodecahydrate:7784-28-3
Character: Aluminum Sodium Sulfate occurs as colorless crystals, white granules, or a powder. It is anhydrous or may contain up to 12 molecules of water of hydration. The anhydrous form is slowly soluble in water. The dodecahydrate is freely soluble in water, and it effloresces in air. Both forms are insoluble in alcohol.
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Disodium Phosphate
Chemical Name: Disodium Phosphate
Molecular Formula: Na2HPO4; Na2HPO42H2O; Na2HPO4·12H2O
Molecular Weight: Anhydrous: 141.96; Dihydrate: 177.99; Dodecahydrate:358.14
CAS: Anhydrous:7558-79-4; Dihydrate: 10028-24-7 ; Dodecahydrate:10039-32-4
Character: White powder, easily soluble in water, insoluble in alcohol. Its water solution is slightly alkaline.
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Monosodium Phosphate
Chemical Name: Monosodium Phosphate
Molecular Formula: NaH2PO4; NaH2PO4H2O; NaH2PO4·2H2O
Molecular Weight: Anhydrous: 120.1, Monohydrate: 138.01, Dihydrate: 156.01
CAS: Anhydrous:7558-80-7, Monohydrate: 10049-21-5, Dihydrate: 13472-35-0
Character: White rhombic crystal or white crystal powder, easily soluble in water, almost insoluble in ethanol. Its solution is acidic.
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Sodium Acid Pyrophosphate
Chemical Name: Sodium Acid Pyrophosphate
Molecular Formula: Na2H2P2O7
Molecular Weight: 221.94
CAS: 7758-16-9
Character: It is white crystalline powder. Relative density is 1.862. It’s soluble in water, insoluble in ethanol. Aqueous solution is alkaline. It reacts with Fe2+ and Mg2+ to form chelates.
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Sodium Tripolyphosphate
Chemical Name: Sodium Tripolyphosphate, Sodium Triphosphate
Molecular Formula: Na5P3O10
Molecular Weight: 367.86
CAS: 7758-29-4
Character: This product is white powder, melting point of 622 degrees, soluble in water on metal ions Ca2+, Mg2+ has a very significant chelating capacity, with moisture absorption.
