Appearance White to pale yellow crystalline powder; odorless with a bitter taste
Melting Point 225–230°C
Solubility - Water: Highly soluble (200 g/L at 20°C)
- Ethanol: Soluble
- Chloroform: Slightly soluble
- Acetone: Very slightly soluble
Optical Rotation Racemic mixture (tetramisole is a 50:50 mixture of S- and R-enantiomers)
Stability - Stable in acidic conditions
- Degrades under alkaline conditions or prolonged exposure to heat/light