Chemical and Physical Properties
Formula weight: 412.52
Appearance: Fine, white powder
Solubility: Polybor's solubility in water (as Na2B8O13·4H2O) increases with increased temperatures, with the most significant changes in solubility occurring at or below room temperature. For details, download the product datasheet.
Stability: Polybor shows little tendency to cake except after prolonged storage or if it severely wetted by rain or substantial water penetration. It can also absorb moisture if exposed to a humid environment and can form crystals of sodium pentaborate when exposed to water.
Boric oxide, B2O3: 66.2 to 69.0%
Sodium oxide, Na2O: 14.0 to 15.1%
Containers: Products may be available in bulk, IBCs, or small bags