Glucose Sodium Bromide
Formula: 2C6H12O6·NaBr·H2O
Crystalline adduct (cocrystal) of carbohydrate glucose with sodium bromide.
Properties
- Crystal system:trigonal
- Crystal shape:cube, stretched along main diagonal
- Color: colorless
- Stability on air: stable
Preparation
Dissolve glucose and sodium bromide in warm water in 2:1 molar ratio, then crystallize. Avoid strong heating that causes darkening of glucose.
Growing
The compound grows much worse than its chloride analog, it is much more prone to formation of small parasitic crystals. Solubility, according to my measurements, is around 130g/100ml.
To grow it, I used slow evaporation method, limiting evaporation speed with cover. Growth time is 1 month.
Safety
Bromide is slightly toxic, avoid consumption of it.
More photos
Seed crystals:
