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Cadmium sulfate
Names
	IUPAC name Cadmium(II) sulfate
	Other names Sulfuric acid, cadmium salt (1:1),;
Identifiers
CAS Number	10124-36-4 ; 7709-84-3 (monohydrate) ; 15244-35-9 (octahydrate) ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:50292 ; CHEBI:86157 (octahydrate);
ChemSpider	23335 ;
ECHA InfoCard	100.030.288
EC Number	233-331-6;
Gmelin Reference	8295
PubChem CID	24962 (anhydrous); 23618914 (tetrahydrate); 16211218 (octahydrate);
RTECS number	EV2700000;
UNII	947UNF3Z6O ;
UN number	2570
CompTox Dashboard (EPA)	DTXSID1020229 ;
	SMILES [Cd+2].[O-]S([O-])(=O)=O;
Properties
Chemical 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	1,000 °C (1,830 °F; 1,270 K) (anhydrous) ; 105 °C (monohydrate) ; 40 °C (octahydrate)
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
Magnetic susceptibility (χ)	-59.2·10−6 cm3/mol
Refractive index (nD)	1.565
Structure
Crystal structure	orthorhombic (anhydrous) ; monoclinic (hepta & octahydrate)
Thermochemistry
Std enthalpy of; formation ΔfHo298	−935 kJ·mol−1
Standard molar; entropy So298	123 J·mol−1·K−1
Hazards
	1 3 0
U.S. Permissible; exposure limit (PEL)	[1910.1027] TWA 0.005 mg/m3 (as Cd)
Related compounds
Other anions	{{{value}}}
Other cations	{{{value}}}
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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	Infobox references

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.