IUPAC: dipotassium dioxido(oxo)tin
Empirical Formula: K₂O₃Sn
Molecular Weight: 244.9048 
Einecs: 235-255-9 
H bond acceptors: 3
H bond donors: 2 
Polar Surface Area: 57.53 Å² 
Melting  Point: 140°C
Density: 3.197 g/cm³ 
The Cas Register Number of  Stannate (SnO32-),potassium (1:2) is 12142-33-5.The chemical synonyms of  Stannate (SnO32-),potassium (1:2) (CAS NO.12142-33-5) are Dipotassium tin trioxide .The molecular structure of  Stannate (SnO32-),potassium (1:2) (CAS NO.12142-33-5) is
.

  Stannate (SnO32-),potassium (1:2) (CAS NO.12142-33-5) is used in organic synthesis .

Risk Statements: 20/21/22-34 
R20/21/22: Harmful by inhalation, in contact with skin and if swallowed. 
R34: Causes burns.
Safety Statements: 22-36/37/39-45 
S22: Do not breathe dust. 
S36/37/39: Wear suitable protective clothing, gloves and eye/face protection. 
S45: In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)
RIDADR: 1759
TSCA: Yes