Chemical and Physical Properties
Molecular weight: 305.5
Specific gravity: 1.92
Melting point: 815°C; begins to lose water at 212°F (100°C)
Appearance: White crystal line granules or powder
Solubility: 17.8% (as K2B4O7·4H2O) by weight in water at room temperature
Stability: When stored under normal conditions of temperature and humidity, potassium tetraborate is unlikely to change chemically or to cake.
Chemical Composition (Theoretical)
Boric oxide, B2O3: 45.58%
Potassium oxide K20: 30.83%
Water of crystallization, H2O: 23.59%
Anhydrous equivalent, K2B4O7: 76.41%
Containers: Products may be available in bulk, IBCs, or small bags.