Cadmium sulfate

Structural formula
General
Surname	Cadmium sulfate
other names	Cadmium sulfate; cadmium oxide sulfuric acid;
Molecular formula	CdSO 4
Brief description	colorless solid
External identifiers / databases
ECHA InfoCard	100.030.288
PubChem	24962
Wikidata	Q414806
properties
Molar mass	208.47 g mol −1
Physical state	firmly
density	4.69 g cm −3 ; 3.09 g cm −3 (hydrate);
Melting point	1000 ° C
solubility	good in water (772 g l −1 at 20 ° C)
safety instructions
H and P phrases	H: 301-330-340-350-360FD-372-410
	P: 201-260-273-284-301 + 310 + 330-304 + 340 + 310
Authorization procedure under REACH	particularly worrying : carcinogenic, mutagenic, toxic for reproduction ( CMR ), serious effects on human health are considered likely
Toxicological data	280 mg kg −1 ( LD 50 , rat , oral )
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Cadmium sulfate is a chemical compound from the group of sulfates .

Occurrence

Cadmium sulfate occurs naturally as the tetrahydrate in the form of rare minerals Drobecit and Voudourisit ago.

Extraction and presentation

Cadmium sulfate can be obtained by reacting cadmium oxide with sulfuric acid.

properties

Cadmium sulfate decomposes above 827 ° C. It crystallizes in an orthorhombic structure with the space group Pn 2 ₁m (space group no. 31, position 5) and the lattice parameters a = 4.698 Å , b = 4.719 Å and c = 6.558 Å. Template: room group / 31.5

use

Cadmium sulphate is used as a reagent for the detection of resorcinol , arsenic , sulphides and fumaric acid or for the precipitation of hydrogen sulphide (formation of cadmium sulphide ) and as an electrolyte in galvanic elements (e.g. Weston normal element ) and in the galvanic deposition of cadmium .

safety instructions

Like many cadmium compounds, cadmium sulfate is classified as carcinogenic and germ cell mutagenic. The main route of exposure is the respiratory tract, subordinate to the digestive tract and absorption through the skin.

Individual evidence

↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ Entry on cadmium sulphate in the GESTIS substance database of the IFA , accessed on November 22, 2017(JavaScript required) .
↑ Data sheet cadmium sulfate hydrates from Sigma-Aldrich , accessed on August 29, 2012 ( PDF ).
↑ Entry on cadmium sulphate in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on February 1, 2016. Manufacturers or distributors can expand the harmonized classification and labeling .
↑ Entry in the SVHC list of the European Chemicals Agency , accessed on March 19, 2015.
↑ Mineralienatlas: Dobrecit
↑ K. Aurivillius, C. Stålhandske: Reinvestigation of the crystal structures of HgSO ₄ and CdSO ₄ . In: Zeitschrift für Kristallographie , 153, 1980, pp. 121-129, doi: 10.1524 / zkri.1980.153.14.121 .

[GESTIS-1] ↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ Entry on cadmium sulphate in the GESTIS substance database of the IFA , accessed on November 22, 2017(JavaScript required) .

[Sigma-2] Data sheet cadmium sulfate hydrates from Sigma-Aldrich , accessed on August 29, 2012 ( PDF ).

[CLP_100.030.288-3] Entry on cadmium sulphate in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on February 1, 2016. Manufacturers or distributors can expand the harmonized classification and labeling .

[SVHC-4] Entry in the SVHC list of the European Chemicals Agency , accessed on March 19, 2015.

[5] Mineralienatlas: Dobrecit

[6] K. Aurivillius, C. Stålhandske: Reinvestigation of the crystal structures of HgSO ₄ and CdSO ₄ . In: Zeitschrift für Kristallographie , 153, 1980, pp. 121-129, doi: 10.1524 / zkri.1980.153.14.121 .