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769290 Sigma-Aldrich

Aluminum oxide

powder, ultra dry

Synonym: Alumina

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Properties

Related Categories Aluminum Salts, Materials Science, Metal and Ceramic Science, Salts
Quality Level   100
InChI Key   TWNQGVIAIRXVLR-UHFFFAOYSA-N
form   powder
impurities   ≤0.5% substances extractable by water
loss   ≤1.0% loss on ignition
particle size   >0.063, coeff var ≥72%
  <0.063 mm, coeff var ≤28%
  >2 mm, coeff var ≤2%
surface area   BET surf. area 120-190 m2/g
mp   2040 °C (lit.)
bulk density   950‑1100 g/L
anion traces   chloride (Cl-): ≤0.015%
  sulfate (SO42-): ≤0.05%
cation traces   As: ≤0.0005%
  Fe: ≤0.02%

Description

Application

Owing to its high hardness, chemical stability and thermal conductivity, alumina finds applications as filler for metals and plastics. It also finds applications in paints, polisher and cosmetics.

Safety & Documentation

Safety Information

RIDADR 
NONH for all modes of transport
RTECS 
BD1200000

Documents

Certificate of Analysis (COA)

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