I-Boehmite CAS No.: 1318-23-6, eyaziwa nangokuthi i-boehmite, ifomula yayo yamangqamuzana i-γ- Al2O3 · H2O noma γ- AlOOH, ikristalu iyingxenye ye-orthogonal (orthorhombic) crystal system futhi ifakwe ku-α Phase hydroxide mineral, okuyinto ngokuyinhloko yakhiwe i-γ- AlOOH , engalahlekelwa amanzi ayikristalu futhi iguqulele ku-Al2O3 ekushiseni okuphezulu.