Catalog Number
ACMA00014301
Product Name
Beryllium Oxide
Description
Beryllium oxide is an odorless white solid. Sinks in water. (USCG, 1999);WHITE CRYSTALS OR POWDER.
Molecular Weight
25.012g/mol
Molecular Formula
BeO;BeO;BeO
InChI Key
LTPBRCUWZOMYOC-UHFFFAOYSA-N
Boiling Point
3787 °C;3787 °C
Melting Point
2578 °C;2530 °C
Density
3 at 68 °F (USCG, 1999);3.01 g/cu cm;3.0 g/cm³
Solubility
Insoluble in water; slightly soluble in acid and alkali solutions;2 ug/100 mL in water at 30 °C; soluble in concentrated sulfuric acid, fused potassium hydroxide;Slowly soluble in concentrated acids or fixed alkali hydroxides;Solubility in water: insoluble
Color/Form
White hexagonal crystals;Light, amorphous powder;White, amorphous powder or white hexagonal crystals
Covalently-Bonded Unit Count
1
MeSH Entry Terms
beryllium oxide
Monoisotopic Mass
25.007098g/mol
Other Experimental
After ignition it is almost insoluble in water, concentrated acids or solutions of fixed alkali hydroxides;Mohs hardness: 9;Extremely stable ... its stability depends on its structure and is determined by the content of bound water. The higher the calcination temperature, the more inert the beryllium oxide.;Pure (100%) beryllium oxide insulates electrically like a ceramic, but conducts heat like a metal.;Piezoelectric or pyroelectric. ... Undergoes hexagonal to tettragonal transition at 21 °C;Linear coefficient of thermal expansion = 5X10-6 1/K;Specific heat = 1.00 J/g-K at 292 K;Thermal conductivity = 264 W/m-K at room temperature;Electrical resistence = 1X10+16 ohm-m at room temperature;Heat resistant
Refractive Index
Index of refraction: 1.719, 1.733
Stability
Stable under recommended storage conditions.