Sodium monothiophosphate

Crystal structure
	__ Na __ S __ O __ P
Crystal system	rhombohedral
Space group	R 3 c (No. 161)
Lattice parameters	a = 8.4442 Å, c = 11.7412 Å
General
Surname	Sodium monothiophosphate
other names	Trisodium thiophosphate
Ratio formula	Na 3 O 3 PS
External identifiers / databases
ECHA InfoCard	100.030.224
PubChem	9877537
ChemSpider	27472409
Wikidata	Q7553348
properties
Molar mass	180.01 g mol −1
Physical state	firmly
Melting point	60 ° C (dodecahydrate); 570 ° C (anhydrate) ;
solubility	very soluble in hot water (dodecahydrate)
safety instructions
GHS hazard labeling ; no classification available
GHS hazard labeling ; no classification available
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

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

Extraction and presentation

Sodium monothiophosphate dodecahydrate can be obtained by hydrolyzing thiophosphoryl trichloride in a sodium hydroxide solution at about 105 ° C.

{\ displaystyle {\ ce {PSCl3 + 6 NaOH -> Na3PO3S + 3NaCl + 3 H2O}}}

Its synthesis is also possible by reacting sodium thiocarbonate with sodium phosphate .

{\ displaystyle {\ ce {3 SCS3 + Na3 (PO3) 3 -> 3 Na3PO3S + 3 CS2}}}

Anhydrous sodium monothiophosphate can be prepared by freeze drying the hydrate and then tempering it.

properties

Unit cell of sodium monothiophosphate (viewed along the c-axis)

Sodium monothiophosphate is a colorless solid. It has a crystal structure with the space group R 3 c (space group no. 161) . The connection is dimorphic. The metastable high-temperature modification crystallizes hexagonally. Sodium monothiophosphate decomposes in air at 315 ° C into Na ₄ P ₂ O ₇ and Na ₂ SO ₄ . Template: room group / 161

Individual evidence

↑ ^a ^b ^c ^d M. Pompetzki, M. Jansen: Sodium monothiophosphate (V): crystal structure and sodium ion conductivity. In: Journal of Inorganic and General Chemistry. 628, 2002, p. 641, doi : 10.1002 / 1521-3749 (200203) 628: 3 <641 :: AID-ZAAC641> 3.0.CO; 2-8 .
^ ^A ^b William M. Haynes: CRC Handbook of Chemistry and Physics . CRC Press, 2016, ISBN 978-1-4987-5429-3 , pp. 87 ( limited preview in Google Book search).
↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
^ ^A ^b ^c Arthur DF Toy: The Chemistry of Phosphorus Pergamon Texts in Inorganic Chemistry . Elsevier, 2016, ISBN 978-1-4831-3959-3 , pp. 544 ( limited preview in Google Book search).
^ AP Hagen: Inorganic Reactions and Methods, The Formation of Bonds to Group VIB (O, S, Se, Te, Po) Elements . John Wiley & Sons, 2009, ISBN 0-470-14540-4 , pp. 120 ( limited preview in Google Book search).
↑ M. Pompetzki, L. van Wüllen, M. Jansen: Solid-state NMR investigations on sodium oxothiophosphates (V). In: Journal of Inorganic and General Chemistry. 630, 2004, p. 384, doi : 10.1002 / zaac.200300357 .
↑ Nathan J. Takas, Jennifer A. Aitken: Phase Transitions and Second-Harmonic Generation in Sodium Monothiophosphate. In: Inorganic Chemistry. 45, 2006, p. 2779, doi : 10.1021 / ic0520216 .

[DOI10.1002/1521-3749-1] M. Pompetzki, M. Jansen: Sodium monothiophosphate (V): crystal structure and sodium ion conductivity. In: Journal of Inorganic and General Chemistry. 628, 2002, p. 641, doi : 10.1002 / 1521-3749 (200203) 628: 3 <641 :: AID-ZAAC641> 3.0.CO; 2-8 .

[William_M._Haynes-2] A ^b William M. Haynes: CRC Handbook of Chemistry and Physics . CRC Press, 2016, ISBN 978-1-4987-5429-3 , pp. 87 ( limited preview in Google Book search).

[NV-3] This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.

[Arthur_D._F._Toy-4] A ^b ^c Arthur DF Toy: The Chemistry of Phosphorus Pergamon Texts in Inorganic Chemistry . Elsevier, 2016, ISBN 978-1-4831-3959-3 , pp. 544 ( limited preview in Google Book search).

[A._P._Hagen-5] AP Hagen: Inorganic Reactions and Methods, The Formation of Bonds to Group VIB (O, S, Se, Te, Po) Elements . John Wiley & Sons, 2009, ISBN 0-470-14540-4 , pp. 120 ( limited preview in Google Book search).

[DOI10.1002/zaac.200300357-6] M. Pompetzki, L. van Wüllen, M. Jansen: Solid-state NMR investigations on sodium oxothiophosphates (V). In: Journal of Inorganic and General Chemistry. 630, 2004, p. 384, doi : 10.1002 / zaac.200300357 .

[DOI10.1021/ic0520216-7] Nathan J. Takas, Jennifer A. Aitken: Phase Transitions and Second-Harmonic Generation in Sodium Monothiophosphate. In: Inorganic Chemistry. 45, 2006, p. 2779, doi : 10.1021 / ic0520216 .