Boehmite CAS No.: 1318-23-6, yomwe imadziwikanso kuti boehmite, mawonekedwe ake a molekyulu ndi γ- Al2O3 · H2O kapena γ- AlOOH, kristalo ndi ya orthogonal (orthorhombic) crystal system ndipo imayikidwa mu α Phase hydroxide mineral, yomwe imapangidwa makamaka ndi γ- AlOOH, yomwe imatha kutaya madzi a kristalo ndikusintha kukhala Al2O3 pa kutentha kwakukulu.