Sodium selenate

Structural formula
General
Surname	Sodium selenate
other names	Disodium tetraoxoselenate (IV)
Molecular formula	Na 2 SeO 4
Brief description	white odorless solid
External identifiers / databases
CAS number 13410-01-0 EC number 236-501-8 ECHA InfoCard 100.033.169 PubChem 25960 Wikidata Q419488
properties
Molar mass	188.94 g mol −1
Physical state	firmly
density	3.213 g cm −3 (17 ° C)
solubility	585 g l −1 at 25 ° C
safety instructions
GHS labeling of hazardous substances danger H and P phrases H: 300-331-373-410 P: 260-264-301 + 310-330-304 + 340-311
Toxicological data	1.6 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 .

Sodium selenate is an inorganic chemical compound of sodium from the selenate group .

Extraction and presentation

Sodium selenate can be obtained by reacting a selenic acid solution with sodium carbonate .

${\displaystyle \mathrm {H_{2}SeO_{4}+Na_{2}CO_{3}\longrightarrow Na_{2}SeO_{4}+CO_{2}+H_{2}O} }$

properties

Sodium selenate is a non-flammable, hygroscopic, white, odorless solid that is very easily soluble in water. It crystallizes orthorhombically , space group Fddd (space group no. 70) , with the lattice parameters a = 6.099  Å , b = 12.59 Å, c = 10.16 Å.

use

Sodium selenate is used as an insecticide and as an additive to fertilizers. It is also used in low doses as a dietary supplement and in medicine.

Individual evidence

1. ↑ ^{a b c d e f g} Entry on sodium selenate in the GESTIS substance database of the IFA , accessed on January 8, 2018(JavaScript required) .
2. ↑ David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 90th edition. (Internet version: 2010), CRC Press / Taylor and Francis, Boca Raton, FL, Physical Constants of Inorganic Compounds, pp. 4-91.
3. ↑ Georg Brauer (Ed.), With the collaboration of Marianne Baudler a . a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , p. 425.
4. ^ A. Kalman, DWJ Cruickshank: A note on the structure of Na ₂ SeO ₄ . In: Acta Crystallographica , B26, 1970, p. 436, doi: 10.1107 / S0567740870002534 .
5. ↑ Ralf Steudel : Chemistry of Non-Metals: From Structure and Bond to Application . Walter de Gruyter, 2008, ISBN 3-11-021128-9 , p. 468 ( limited preview in Google Book search).
6. ↑ Klaus Karl Degitz, Hanns-Juergen Krauss: pathogenesis, clinical and pharmacotherapy of acne . Govi-Verlag Eschborn, 2004, ISBN 3-7741-1021-2 ( limited preview in the Google book search).
7. ↑ Frank Wappler, Gerald Spilker: Burn medicine: From the scene of an accident to rehabilitation . Georg Thieme Verlag, 2008, ISBN 3-13-159531-0 , p. 78 ( limited preview in Google Book search).
8. ↑ Irmgard Niestroj: Practice of orthomolecular medicine: Physiological foundations. Therapy with ... Georg Thieme Verlag, 2000, ISBN 3-7773-1470-6 , p. 480 ( limited preview in Google Book Search).