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| CAS No.: | 1302-76-7 |
|---|---|
| Name: | kyanite |
| Molecular Structure: | |
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| Formula: | O5Si•2Al |
| Molecular Weight: | 162.05 |
| Synonyms: | Oil-dri;Cyanite;Valfor;Disthene;Kyanite;Kaopolite;Safe-N-Dri;kyanite Al2O5Si2; |
| EINECS: | 215-106-4 |
| Density: | g/cm3 |
| Boiling Point: | °Cat760mmHg |
| Flash Point: | °C |
| Safety: | Questionable carcinogen with experimental tumorigenic data by implantation. See also ALUMINUM COMPOUNDS. |
| PSA: | 90.15000 |
| LogP: | -1.99810 |
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- Total:38 Page 1 of 1 1
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Chemistry
Molecular Formula: H6Al2O5Si
Molar mass: 168.0932 g/mol
EINECS: 215-106-4
Product categories of Kyanite (1302-76-7): Inorganics
Structure of Kyanite (1302-76-7):
H-Bond Donor: 5
H-Bond Acceptor: 5
Systematic Name: Aluminum; silicic acid; hydrate
SMILES: [AlH3].[AlH3].O.O[Si](O)(O)O
InChI: InChI=1/2Al.H4O4Si.H2O/c;;1-5(2,3)4;/h;;1-4H;1H2
InChIKey: INJRKJPEYSAMPD-UHFFFAOYAU
Std. InChI: InChI=1S/2Al.H4O4Si.H2O/c;;1-5(2,3)4;/h;;1-4H;1H2
Std. InChIKey: INJRKJPEYSAMPD-UHFFFAOYSA-N
History
Kyanite (1302-76-7) is a typically blue silicate mineral, commonly found in aluminium-rich metamorphic pegmatites and/or sedimentary rock.
Uses
Kyanite (1302-76-7) is one of the index minerals that are used to estimate the temperature, depth, and pressure at which a rock undergoes metamorphism; and as with most minerals, it is a collector's mineral.As a gemstone, though its use is limited by its anisotropism and perfect cleavage.It is used primarily in refractory and ceramic products, including porcelain plumbing fixtures and dishware and also used in electronics, electrical insulators and abrasives.
Toxicity Data With Reference
Standards and Recommendations:
ACGIH TLV: TWA 2 mg(Al)/m3
DOT Classification: 4.3; Label: Dangerous When Wet
Safety Profile
Questionable carcinogen with experimental tumorigenic data by implantation. See also ALUMINUM COMPOUNDS.
Standards and Recommendations
ACGIH TLV: TWA 2 mg(Al)/m3
DOT Classification: 4.3; Label: Dangerous When Wet
Specification
Kyanite (1302-76-7) also can be called Cyanite ; Safe-N-Dri ; Oil-dri ; Valfor ; Kaopolite and Disthene .It is a member of the aluminosilicate series, which also includes the polymorph andalusite and the polymorph sillimanite.It in metamorphic rocks generally indicates pressures higher than 4 kilobars. Although potentially stable at lower pressure and low temperature, the activity of water is usually high enough under such conditions that it is replaced by hydrous aluminosilicates such as muscovite, pyrophyllite, or kaolinite.
At temperatures above 1100 °C, it decomposes into mullite and vitreous silica via the following reaction: 3(Al2O3·SiO2) → 3Al2O3·2SiO2 + SiO2.And this transformation results in an expansion.