Sodium monothiophosphate information

Sodium monothiophosphate

Names
IUPAC name Sodium monothiophosphate
Identifiers
CAS Number	10101-88-9 (anhydrous) Y 51674-18-1 (nonahydrate) 51674-17-0 (dodecahydrate) Y
3D model (JSmol)	Interactive image
ECHA InfoCard	100.030.224
EC Number	233-26-1
PubChem CID	6913045
UNII	AN1017219I Y 4VBT402QNM (dodecahydrate) Y
CompTox Dashboard (EPA)	DTXSID30889527
InChI InChI=1S/3Na.H3O3PS/c;;;1-4(2,3)5/h;;;(H3,1,2,3,5)
SMILES [O-]P(=S)([O-])[O-].[Na+].[Na+].[Na+]
Properties
Chemical formula	Na3PO3S
Molar mass	180.00 g·mol−1
Appearance	White solid
Density	1.58 g/cm3 (dodecahydrate) 2.40 g/cm3 (anhydrous)
Melting point	120 to 125 °C (248 to 257 °F; 393 to 398 K) (decomposition)
Solubility in water	soluble
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is YN ?) Infobox references

Sodium monothiophosphate, or sodium phosphorothioate, is an inorganic compound with the chemical formula Na₃PO₃S. It is a sodium salt of monothiophosphoric acid (H₃PO₃S). Sodium monothiophosphate forms hydrates Na₃PO₃S·xH₂O. The anhydrous form and all hydrates are white solids. The anhydrous salt (x = 0) (Na₃PO₃S) decomposes without melting at 120-125 °C. More common is the dodecahydrate (Na₃PO₃S·12H₂O). A nonahydrate is also known (Na₃PO₃S·9H₂O).

Related salts are the sodium dithiophosphate undecahydrate Na₃PO₂S₂·11H₂O, sodium trithiophosphate undecahydrate Na₃POS₃·11H₂O, and sodium tetrathiophosphate octahydrate Na₃PS₄·8H₂O.^[1]