Cadmium sulfate facts for kids
Quick facts for kids Cadmium sulfate |
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| IUPAC name | Cadmium(II) sulfate |
| Other names | Sulfuric acid, cadmium salt (1:1), |
| Identifiers | |
| CAS number | |
| PubChem | |
| EC number | 233-331-6 |
| ChEBI | CHEBI:50292 |
| RTECS number | EV2700000 |
| SMILES | [Cd+2].[O-]S([O-])(=O)=O |
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InChI
InChI=1/Cd.H2O4S/c;1-5(2,3)4/h;(H2,1,2,3,4)/q+2;/p-2
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| Gmelin Reference | 8295 |
| Properties | |
| Molecular formula | CdSO4 CdSO4·H2O (monohydrate) 3CdSO4·8H2O (octahydrate) |
| Molar mass | 208.47 g/mol (anhydrous) 226.490 g/mol (monohydrate) 769.546 g/mol (octahydrate) |
| Appearance | White hygroscopic solid |
| Odor | odorless |
| Density | 4.691 g/cm3 (anhydrous) 3.79 g/cm3 (monohydrate) 3.08 g/cm3 (octahydrate) |
| Melting point |
1000 °C, 1273 K, 1832 °F |
| Boiling point |
(decomposes to basic sulfate and then oxide) |
| Solubility in water | anhydrous: 75 g/100 mL (0 °C) 76.4 g/100 mL (25 °C) 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 |
| -59.2·10−6 cm3/mol | |
| Refractive index (nD) | 1.565 |
| Structure | |
| Crystal structure | orthorhombic (anhydrous) monoclinic (hepta & octahydrate) |
| Thermochemistry | |
| Std enthalpy of formation ΔfH |
−935 kJ·mol−1 |
| Standard molar entropy S |
123 J·mol−1·K−1 |
| Hazards | |
| NFPA 704 |
1
3
0
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| U.S. Permissible exposure limit (PEL) |
[1910.1027] TWA 0.005 mg/m3 (as Cd) |
| Related compounds | |
| Other anions | Cadmium acetate, Cadmium chloride, Cadmium nitrate |
| Other cations | Zinc sulfate, Calcium sulfate, Magnesium sulfate |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) | |
Cadmium sulfate is a chemical compound. Its chemical formula is CdSO4. It is made of cadmium and sulfate ions. The cadmium is in its +2 oxidation state.
Properties
Cadmium sulfate is a white solid. It easily dissolves in water. It is toxic and carcinogenic.
Preparation
Cadmium sulfate is made by dissolving cadmium carbonate, cadmium oxide, or cadmium metal in sulfuric acid.
Uses
Cadmium sulfate is used to electroplate cadmium on electronic circuits. It is also used to make cadmium sulfide, a pigment. It is used as an electrolyte in a certain battery used to make voltmeters accurate.
Related pages
Images for kids
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Portion of structure of CdSO4 illustrating the distorted tetrahedral geometry at Cd (dark blue spheres).
See also
In Spanish: Sulfato de cadmio para niños
