Copper Sulphate Anhydrous is an inorganic copper compound with the chemical formula CuSO₄. It is the water-free form of copper sulfate and appears as a white or off-white crystalline solid with a rhombic crystal structure. Unlike the blue pentahydrate form (CuSO₄·5H₂O), anhydrous copper sulphate contains no water of crystallization and readily absorbs moisture from the air. It is soluble in water and decomposes to copper oxide when heated above 600 °C. It is an important compound in analytical chemistry and laboratory research, because it easily hydrates and shows a distinct color change.
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CAS No.: 7758-98-7Â
Synonyms: Curpric Sulfate, Cupric sulfate anhydrous.
| Physical Properties | |
| Chemical formula | CuSO4 |
| IUPAC Name | copper sulfate |
| Molecular weight | 159.61 g/mol |
| Solubility | Soluble in cold water |
| Density | 3.6 |
| Appearance | White to off-white to grey color powder |
| Storage | Store at room temperature |
| Chemical Properties | |
| Color | Grey |
| Physical State | Solid |
| Melting Point | 200 °C |
| Boiling Point | 650 °C |
| Ph value | 3.5-4.5 |
| Odor | Odorless |
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| Pictograms : |   |
| Hazard Statements : | H302: Harmful if swallowed. H315: Causes skin irritation. H319: Causes serious eye irritation. H410: Very toxic to aquatic life with long-lasting effects. |
| Precautionary statements : | P264: Wash hands, forearms and face thoroughly after handling. P273: Avoid release to the environment. P280: Wear protective clothing, eye protection, face protection, protective gloves. P301+P312: IF SWALLOWED: Call a POISON CENTRE or doctor if you feel unwell. P302+P352 – IF ON SKIN: Wash with plenty of water. P305+P351+P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. |
Copper Sulphate Anhydrous is an inorganic copper compound with the chemical formula CuSO₄. It is the water-free form of copper sulfate and appears as a white or off-white crystalline solid with a rhombic crystal structure. Unlike the blue pentahydrate form (CuSO₄·5H₂O), anhydrous copper sulphate contains no water of crystallization and readily absorbs moisture from the air. It is soluble in water and decomposes to copper oxide when heated above 600 °C. It is an important compound in analytical chemistry and laboratory research, because it easily hydrates and shows a distinct color change.
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CAS No.: 7758-98-7Â
Synonyms: Curpric Sulfate, Cupric sulfate anhydrous.
| Physical Properties | |
| Chemical formula | CuSO4 |
| IUPAC Name | copper sulfate |
| Molecular weight | 159.61 g/mol |
| Solubility | Soluble in cold water |
| Density | 3.6 |
| Appearance | White to off-white to grey color powder |
| Storage | Store at room temperature |
| Chemical Properties | |
| Color | Grey |
| Physical State | Solid |
| Melting Point | 200 °C |
| Boiling Point | 650 °C |
| Ph value | 3.5-4.5 |
| Odor | Odorless |
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| Pictograms : | |
| Hazard Statements : | H302: Harmful if swallowed. H315: Causes skin irritation. H319: Causes serious eye irritation. H410: Very toxic to aquatic life with long-lasting effects. |
| Precautionary statements : | P264: Wash hands, forearms and face thoroughly after handling. P273: Avoid release to the environment. P280: Wear protective clothing, eye protection, face protection, protective gloves. P301+P312: IF SWALLOWED: Call a POISON CENTRE or doctor if you feel unwell. P302+P352 – IF ON SKIN: Wash with plenty of water. P305+P351+P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. |
Copper sulphate anhydrous is used in analytical chemistry as a moisture indicator and laboratory reagent, as well as in electroplating, mining, wood preservation and the manufacture of other copper compounds.
When water is added to anhydrous copper sulphate, it absorbs water molecules and forms copper sulfate pentahydrate (CuSO₄·5H₂O). Thus its color changes from white to blue.
Anhydrous copper sulphate is stable at moderate temperatures but decomposes thermally at about 600 °C forming black copper(II) oxide while releasing sulphur dioxide and oxygen gases.Â
Anhydrous copper sulphate is prepared by heating copper sulfate pentahydrate (CuSO₄·5Hâ‚‚O) to remove its water of crystallization and produce the white anhydrous form.Â
