Boehmite properties & identity
Core identifiers and the procurement-relevant material characteristics behind commercial boehmite grades.
Boehmite vs. pseudoboehmite
The names are frequently mixed in marketplace listings, but procurement teams should not assume they are interchangeable. Pseudoboehmite is typically poorly crystalline and is often sold for catalyst, adsorbent and alumina-precursor applications where pore volume and high surface area are central. Battery-grade boehmite is commonly specified around phase purity, controlled particle size, morphology and trace contamination.
Properties that define a commercial grade
Particle size
D10, D50 and D90 affect film thickness, coating uniformity, porosity, slurry rheology and equipment wear.
Specific surface area
BET surface area influences surface reactivity, binder demand, adsorption and dispersion characteristics.
Crystal morphology
Plate-like, fine or other controlled morphologies can change packing and pore structure in ceramic-coated separators.
Trace impurities
Low sodium, low iron and low magnetic impurities are especially relevant for high-value battery and electronic applications.
Thermal behavior
Boehmite is valued in high-temperature and battery-coating applications because of its thermal stability relative to polymer separator substrates. Commercial literature also emphasizes its lower hardness and density versus alumina for certain coating applications. Exact transformation temperatures and performance depend on grade and test method, so use supplier TDS and application testing for design decisions.
Reference identifiers
PubChem lists Boehmite (Al(OH)O) under CID 73982 and CAS 1318-23-6. This site uses CAS 1318-23-6 as the primary indexing key for the boehmite reference pages.