| abstract |
The present invention provides an inorganic fiber exhibiting high bio solubility in which the influence on the human body and the living environment is suppressed and exhibiting heat resistance suitable as a constituent material such as a filter material or a seal material. Al 2 O 3 , not less than 81% by mass and not less than 81% by mass, containing 65% by mass of MgO and 0% by mass to 40% by mass of SiO 2 , and Al 2 O 3 , MgO and SiO 2 . It is the inorganic fiber characterized by the sum total content ratio being 98 mass% or more of the whole fiber. |