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Kyanite

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Kyanite

EINECS 215-106-4
CAS No. 1302-76-7 Density g/cm3
Solubility Melting Point
Formula O5Si•2Al Boiling Point °Cat760mmHg
Molecular Weight 162.05 Flash Point °C
Transport Information Appearance
Safety Questionable carcinogen with experimental tumorigenic data by implantation. See also ALUMINUM COMPOUNDS. Risk Codes
Molecular Structure Molecular Structure of 1302-76-7 (ALUMINUM(III) SILICATE (2:1)			) Hazard Symbols
Synonyms

 

Kyanite Chemical Properties

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

Kyanite History

  Kyanite (1302-76-7) is a typically blue silicate mineral, commonly found in aluminium-rich metamorphic pegmatites and/or sedimentary rock.

Kyanite 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.

Kyanite Toxicity Data With Reference

 
 

Standards and Recommendations:

 

ACGIH TLV: TWA 2 mg(Al)/m3

 

DOT Classification:  4.3; Label: Dangerous When Wet

Kyanite Safety Profile

Questionable carcinogen with experimental tumorigenic data by implantation. See also ALUMINUM COMPOUNDS.

Kyanite Standards and Recommendations

ACGIH TLV: TWA 2 mg(Al)/m3
DOT Classification:  4.3; Label: Dangerous When Wet

Kyanite 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.

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