Melting point :2040 °C(lit.)
Boiling point :2980°C
Density :3.97
bulk density :950-1100g/L
vapor pressure :17 mm Hg ( 20 °C)
refractive index :1.765
Flash point :2980°C
storage temp. :Sealed in dry,Room Temperature
solubility :Miscible with ethanol.
form :powder
color :White to pink
Specific Gravity :3.97
Odor :Odorless
PH Range :3.5 - 4.5
PH :7.0±0.5 ( in H2O)
Water Solubility :INSOLUBLE
semiconductor properties :<0001>
Crystal Structure :Trigonal
crystal system :Three sides
Merck :14,356
Space group :R3c
Lattice constant :

a/nm	b/nm	c/nm	α/o	β/o	γ/o	V/nm3
0.47589	0.47589	1.2991	90	90	120	0.2548

Exposure limits :ACGIH: TWA 1 mg/m3
OSHA: TWA 15 mg/m3; TWA 5 mg/m3 Dielectric constant :4.5（Ambient）
Cosmetics Ingredients Functions :OPACIFYING
ANTICAKING
ABRASIVE
VISCOSITY CONTROLLING
BULKING
ABSORBENT InChI :1S/2Al.3O
InChIKey :PNEYBMLMFCGWSK-UHFFFAOYSA-N
SMILES :O=[Al]O[Al]=O
CAS DataBase Reference :1344-28-1(CAS DataBase Reference)
NIST Chemistry Reference :Aluminum oxide(1344-28-1)
EPA Substance Registry System :Alumina (1344-28-1)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H225 Highly Flammable liquid and vapour Flammable liquids Category 2 Danger P210,P233, P240, P241, P242, P243,P280, P303+ P361+P353, P370+P378,P403+P235, P501 H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P H336 May cause drowsiness or dizziness Specific target organ toxicity,single exposure; Narcotic effects Category 3 Warning P261, P271, P304+P340, P312,P403+P233, P405, P501
Precautionary statements:	P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.