Rhodium (III) sulfate

Structural formula
	No drawing available
General
Surname	Rhodium (III) sulfate
other names	Dirhodium trisulfate; Rhodium sulfate;
Molecular formula	Rh 2 (SO 4 ) 3
Brief description	orange-red solid
External identifiers / databases
EC number	234-014-5
ECHA InfoCard	100.030.909
PubChem	159290
Wikidata	Q20986184
properties
Molar mass	494.00 g mol −1
Physical state	firmly
density	3.94 g cm −3
Melting point	> 500 ° C (decomposition)
solubility	soluble in water
safety instructions
GHS labeling of hazardous substances	no GHS pictograms
	no GHS pictograms
H and P phrases	H: no H-phrases
	P: no P-phrases
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Rhodium (III) sulfate is an inorganic chemical compound of rhodium from the group of sulfates .

Extraction and presentation

Rhodium (III) sulfate can be obtained by reacting rhodium (III) oxide or rhodium hydroxide with sulfuric acid, the tetra- or pentadecahydrate being formed depending on the reaction conditions.

{\ displaystyle \ mathrm {Rh_ {2} O_ {3} +3 \ H_ {2} SO_ {4} \ longrightarrow Rh_ {2} (SO_ {4}) _ {3} +3 \ H_ {2} O} }

properties

Rhodium (III) sulfate is an orange-red solid that also forms a red, amorphous tetra- and a yellow pentadecahydrate. It has a trigonal crystal structure with the space group R 3 (space group no.148) . There is also an orange dihydrate with an orthorhombic crystal structure and the space group Pnma (space group no. 62) and other hydrates. Template: room group / 148 Template: room group / 62

use

Rhodium (III) sulphate is an intermediate product in rhodium production and is used for electroplating with rhodium ( rhodium plating ).

Individual evidence

↑ ^a ^b ^c ^d R. Blachnik: Pocket book for chemists and physicists Volume 3: Elements, inorganic compounds and materials, minerals . Springer-Verlag, 2013, ISBN 978-3-642-58842-6 , pp. 698 ( limited preview in Google Book search).
^ William M. Haynes: CRC Handbook of Chemistry and Physics, 97th Edition . CRC Press, 2016, ISBN 978-1-4987-5429-3 , pp. 101 ( limited preview in Google Book search).
↑ ^a ^b ^c Data sheet Rhodium (III) sulfate solution, ~ 8% in H ₂ O from Sigma-Aldrich , accessed on October 10, 2017 ( PDF ).
^ ^A ^b Georg Brauer: Handbook of Preparative Inorganic Chemistry . Elsevier, 2012, ISBN 978-0-323-16129-9 , pp. 1589 ( limited preview in Google Book Search).
↑ Stefan Schwarzer, Annika Betke, Christian Logemann, Mathias S. Wickleder: Oxidizing Rhodium with Sulfuric Acid: The Sulfates Rh ₂ (SO ₄ ) ₃ and Rh ₂ (SO ₄ ) ₃ 2H ₂ O. In: European Journal of Inorganic Chemistry . 2017, 2017, p. 752, doi : 10.1002 / ejic.201601247 .
^ Rudolf Warncke: Index Formula Index O-Zr Elements 104 to 132 . Springer Science & Business Media, 2013, ISBN 978-3-662-09030-5 , pp. 106 ( limited preview in Google Book search).
↑ Hagen Rudolph: The precious metal book gold • silver • platinum • palladium • ruthenium • rhodium • osmium • iridium . epubli, 2013, ISBN 978-3-8442-5081-7 , pp. 195 ( limited preview in Google Book search).
↑ Hans Martens, Daniel Goldmann: Recyclingtechnik textbook for teaching and practice . Springer-Verlag, 2016, ISBN 978-3-658-02786-5 , pp. 224 ( limited preview in Google Book search).
^ Gary JK Acres, Kurt Swars: Pt Platinum Supplement Volume A 1 Technology of Platinum-Group Metals . Springer Science & Business Media, 2013, ISBN 978-3-662-10278-7 , pp. 71 ( limited preview in Google Book search).

[R._Blachnik-1] R. Blachnik: Pocket book for chemists and physicists Volume 3: Elements, inorganic compounds and materials, minerals . Springer-Verlag, 2013, ISBN 978-3-642-58842-6 , pp. 698 ( limited preview in Google Book search).

[William_M._Haynes-2] William M. Haynes: CRC Handbook of Chemistry and Physics, 97th Edition . CRC Press, 2016, ISBN 978-1-4987-5429-3 , pp. 101 ( limited preview in Google Book search).

[Sigma-3] Data sheet Rhodium (III) sulfate solution, ~ 8% in H ₂ O from Sigma-Aldrich , accessed on October 10, 2017 ( PDF ).

[Georg_Brauer-4] A ^b Georg Brauer: Handbook of Preparative Inorganic Chemistry . Elsevier, 2012, ISBN 978-0-323-16129-9 , pp. 1589 ( limited preview in Google Book Search).

[DOI10.1002/ejic.201601247-5] Stefan Schwarzer, Annika Betke, Christian Logemann, Mathias S. Wickleder: Oxidizing Rhodium with Sulfuric Acid: The Sulfates Rh ₂ (SO ₄ ) ₃ and Rh ₂ (SO ₄ ) ₃ 2H ₂ O. In: European Journal of Inorganic Chemistry . 2017, 2017, p. 752, doi : 10.1002 / ejic.201601247 .

[Rudolf_Warncke-6] Rudolf Warncke: Index Formula Index O-Zr Elements 104 to 132 . Springer Science & Business Media, 2013, ISBN 978-3-662-09030-5 , pp. 106 ( limited preview in Google Book search).

[Hagen_Rudolph-7] Hagen Rudolph: The precious metal book gold • silver • platinum • palladium • ruthenium • rhodium • osmium • iridium . epubli, 2013, ISBN 978-3-8442-5081-7 , pp. 195 ( limited preview in Google Book search).

[Hans_Martens,_Daniel_Goldmann-8] Hans Martens, Daniel Goldmann: Recyclingtechnik textbook for teaching and practice . Springer-Verlag, 2016, ISBN 978-3-658-02786-5 , pp. 224 ( limited preview in Google Book search).

[Gary_J.K._Acres,_Kurt_Swars-9] Gary JK Acres, Kurt Swars: Pt Platinum Supplement Volume A 1 Technology of Platinum-Group Metals . Springer Science & Business Media, 2013, ISBN 978-3-662-10278-7 , pp. 71 ( limited preview in Google Book search).