Cadmium sulfate

Cadmium sulfate
Names
	IUPAC name Cadmium(II) sulfate
	Other names Sulfuric acid, cadmium salt (1:1),
Identifiers
CAS Number	10124-36-4 ; 7790-84-3 (octahydrate) ; 13477-21-9 (tetrahydrate) ;
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 ;
	InChI InChI=1S/Cd.H2O4S/c;1-5(2,3)4/h;(H2,1,2,3,4)/q+2;/p-2 Key: QCUOBSQYDGUHHT-UHFFFAOYSA-L ; InChI=1/Cd.H2O4S/c;1-5(2,3)4/h;(H2,1,2,3,4)/q+2;/p-2 Key: QCUOBSQYDGUHHT-NUQVWONBAG;
	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 (221 °F; 378 K) (monohydrate, decomposes); 40 °C (104 °F; 313 K) (octahydrate, decomposes);
Boiling point	(decomposes to basic sulfate and then oxide)
Solubility in water	anhydrous:; 75 g/100 mL (0 °C (32 °F; 273 K)); 76.4 g/100 mL (25 °C (77 °F; 298 K)); 58.4 g/100 mL (99 °C (210 °F; 372 K)); ; ; monohydrate:; 76.7 g/100 mL (25 °C (77 °F; 298 K)); ; ; octahydrate:; very soluble; ;
Solubility in methanol	slightly soluble
Solubility in ethyl acetate	slightly soluble
Magnetic susceptibility (χ)	−59.2×10−6 cm3/mol
Refractive index (nD)	1.565
Viscosity	2.41 mPa·s (20 °C (68 °F; 293 K)); 1.49 mPa·s (40 °C (104 °F; 313 K));
Structure
Crystal structure	orthorhombic (anhydrous); monoclinic (mono & octahydrate);
Thermochemistry
Std molar; entropy (S⦵298)	123 J⋅mol−1·K-1
Std enthalpy of; formation (ΔfH⦵298)	−935 kJ⋅mol−1
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H301, H330, H340, H350, H360, H372, H410
Precautionary statements	P201, P202, P260, P264, P270, P271, P273, P280, P284, P301+P310+P330, P304+P340+P310, P308+P313, P403+P233, P405, P501
NFPA 704 (fire diamond)	3 1 1
Threshold limit value (TLV)	0.01 mg/m3 (total dust); 0.002 mg/m3 (respirable dust); (TWA)
	Lethal dose or concentration (LD, LC):
LD50 (median dose)	107 mg/kg (oral, rat, analgous compound)
LC50 (median concentration)	0.75 mg/L (goldfish, analgous compound)
	NIOSH (US health exposure limits):
PEL (Permissible)	TWA 0.005 mg/m3 (as Cd)
REL (Recommended)	TWA 0.005 mg/m3 (as Cd)
IDLH (Immediate danger)	9 mg/m3 (as Cd)
Safety data sheet (SDS)	Fisher Scientific; Sigma-Aldrich;
Related compounds
Other anions	Cadmium acetate; Cadmium chloride; Cadmium nitrate;
Other cations	Zinc sulfate; Calcium sulfate; Magnesium sulfate;
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Cadmium sulfate is the name of a series of related inorganic compounds with the formula CdSO₄·xH₂O. The most common form is the monohydrate CdSO₄·H₂O, but two other forms are known: the octahydrate (3CdSO₄·8H₂O) and the anhydrous salt (CdSO₄). All salts are colourless and highly soluble in water.