Chemical and Physical Properties
Molecular weight: 239.21
Specific gravity: 1.74
Appearance: White crystalline granules
Melting point: 1436°F (780°C)
Solubility: 4.3% (as KB5O8·4H2O) by weight in water at room temperature
Stability: When stored under normal conditions of temperature and humidity, potassium pentaborate is unlikely to change chemically or to cake.
Chemical Composition (Theoretical)
Boric oxide, B2O3: 59.36%
Potassium oxide, K20: 16.06%
Water of crystallization, H20: 24.58%
Anhydrous equivalent, KB5O8: 75.42%
Containers: Products may be available in bulk, IBCs, or small bags.