Sodium antimonate is an inorganic compound, a salt of sodium and antimony acid with the formula NaSbO 3 , crystals that do not dissolve in water form crystalline hydrates .
| Sodium Antimonate | |
|---|---|
| Are common | |
| Systematic name | Sodium Antimonate |
| Traditional names | Sodium Anthromate |
| Chem. formula | NaSbO 3 |
| Physical properties | |
| condition | crystals |
| Molar mass | 192.75 g / mol |
| Density | 4.9 g / cm³ |
| Thermal properties | |
| T. melt. | 1555 ° C |
| Chemical properties | |
| Water solubility | heptahydrate - 0.031 12 g / 100 ml |
| Classification | |
| Reg. CAS number | 15432-85-6 |
| Pubchem | |
| Reg. EINECS number | 239-444-7 |
| SMILES | |
| Inchi | |
| Chemspider | |
Getting
- The fusion of stoichiometric oxides of antimony (V) and sodium :
- Fusion of stoichiometric amounts of antimony (III) oxide and sodium carbonate in air:
- Decomposition when heated sodium hexahydroxcoantimonate :
Physical Properties
Sodium antimonate forms crystals of several modifications:
- trigonal syngony , space group P 3 , cell parameters a = 0.52944 nm, c = 1.59469 nm, Z = 6;
- cubic syngony , F d2m space group , cell parameters a = 1,022 nm;
- rhombic syngony , space group P nma , cell parameters a = 0.543835 nm, b = 0.766195 nm, c = 0.538201 nm.
It does not dissolve in water and ethanol .
Forms crystalline hydrate of the composition NaSbO 3 • 7H 2 O, which loses water at 200 ° C.
Hexahydroxoantimonate (V) sodium Na [Sb (OH) 6 ] can be considered as crystal hydrate NaSbO 3 • 3H 2 O.
Literature
- Chemical Encyclopedia / Redkol .: Knunyants I.L. et al. - M .: Soviet Encyclopedia, 1995. - Vol. 4. - 639 p. - ISBN 5-82270-092-4 .
- Chemist Handbook / Redkol .: Nikolsky B.P. et al. - 2nd ed., Rev. - M.-L.: Chemistry, 1966. - T. 1. - 1072 p.
- Chemist Handbook / Redkol .: Nikolsky B.P. et al. - 3rd ed., Rev. - L .: Chemistry, 1971. - T. 2. - 1168 p.