SAPPHIRE POWDER CAS1317-82-4

Details:

Density 3.97
Boiling point 2980 º C
Melting point 2050 º C
Molecular formula Al2O3
Molecular weight 101.961
Flash point 2980 ° C
Accurate quality 101.947823
LogP 0.31860
Appearance: White powder
Steam pressure 17 mm Hg (20 ° C)
Refractive index 1.765
Storage conditions
It should be stored in a dry and ventilated warehouse to prevent moisture.
Stability
If used and stored according to specifications, it will not decompose and there are no known hazardous reactions to avoid oxides.
2. When strengthening metals with alumina fibers, the solubility with metals is good. In addition, it does not cause chemical reactions with metals and is an ideal metal reinforced fiber. Aluminum oxide fiber is an important variety of polycrystalline refractory fibers. Aluminum oxide fibers have low thermal conductivity, heating shrinkage, and thermal capacity. It has the characteristics of high temperature resistance and high heat, with a long-term use temperature of 1300~1400 ℃, higher than ordinary aluminum silicate fibers (1000~1100 ℃), and a maximum use temperature of 1500~1700 ℃. Compared with non oxide fibers such as carbon fiber and silicon carbide fiber, alumina fiber not only has excellent properties such as high strength, high modulus, and high temperature resistance, but also has good high-temperature oxidation resistance, corrosion resistance, and electrical insulation. It can be used in acidic environments, oxidizing atmospheres, reducing atmospheres, and vacuum conditions. It also has certain corrosion resistance to alkaline environments, but is susceptible to corrosion by lead vapor and vanadium pentoxide.
3. Easy to absorb water but not deliquescence. It is an amphoteric compound.
4. It can cause breathing difficulties, and it is best to operate in a fume hood and store under dry and inert conditions.
Water solubility INSOLUBLE
Molecular structure
1. Molar refractive index: None available
2. Molar volume (cm3/mol): No available
3. Isometric volume (90.2K): No available
4. Surface tension (dyne/cm): No available
5. Dielectric constant: None available
6. Polarization rate (10-24cm3): No available
7. Single isotope mass: 101.94782 Da
8. Nominal mass: 102 Da
9. Average mass: 101.9613 Da
Computational Chemistry
1. Number of hydrogen bond donors: 0
2. Number of hydrogen bond receptors: 3
3. Number of rotatable chemical bonds: 0
4. Topological molecular polarity surface area (TPSA): 43.4
5. Number of heavy atoms: 5
6. Surface charge: 0
7. Complexity: 34.2
8. Number of Isotope Atoms: 0
9. Determine the number of atomic structure centers: 0
10. Number of uncertain atomic construction centers: 0
11. Determine the number of chemical bond stereocenters: 0
12. Number of uncertain chemical bond stereocenters: 0
13. Number of covalent bond units: 1