440345
Glass spheres
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About This Item
Formula empirica (notazione di Hill):
O2Si
Numero CAS:
Peso molecolare:
60.08
Numero CE:
Numero MDL:
Codice UNSPSC:
23201100
ID PubChem:
NACRES:
SB.52
Prodotti consigliati
Grado
high-purity grade
Stato
powder
tecniche
LPLC: suitable
Area superficiale
125 m2/g
Matrice
Silica
Gruppo funzionale matrice
silica
Dimens. media particelle
9-13 μm
Densità
1.1 g/mL at 25 °C (lit.)
Compatibilità
suitable for acidity or alkalinity (alkalinity < 0.5 meq/g ASTM D 3100)
Stringa SMILE
O=[Si]=O
InChI
1S/O2Si/c1-3-2
VYPSYNLAJGMNEJ-UHFFFAOYSA-N
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Descrizione generale
Silica is a naturally occurring material in minerals, flint and in some plants in crystalline phase. Silica used in industries is in synthetic form. Surface area, pore volume, pore size and particle size are independently controllable to some extent. The crystalline silica may be classified based on atmospheric pressure as:
a. Quartz = 1143K
b. Tridymite 1143 - 1743K
c. Cristobalite = 1743, over 1973K it forms amorphous vitreous silica glass.
a. Quartz = 1143K
b. Tridymite 1143 - 1743K
c. Cristobalite = 1743, over 1973K it forms amorphous vitreous silica glass.
Applicazioni
Low density filler for coatings and plastics.
Silica glass spheres are low density filler for coatings and plastics. Silica was used in synthesis of silicalite. Silica was also used to assist the catalytic growth of oxide and nitride nanowires.
Caratteristiche e vantaggi
Light weight, crush-resistant filler. Imparts dimensional stability, reduces warpage, reduces plastic melt viscosity and provides multidirectional orientation in reinforced composites.
Stato fisico
Hollow, spherical non-porous glass beads.
Codice della classe di stoccaggio
11 - Combustible Solids
Classe di pericolosità dell'acqua (WGK)
WGK 1
Punto d’infiammabilità (°F)
Not applicable
Punto d’infiammabilità (°C)
Not applicable
Dispositivi di protezione individuale
Eyeshields, Gloves, type P3 (EN 143) respirator cartridges
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Norma A Sánchez-Flores et al.
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Well crystallized silicalite-1 has been obtained from three sources of amorphous silica, namely, rice hull ashes, commercial Davisil, and a fume silica from Aldrich. The silicas were first dissolved in glycerol according to a recently described reaction. This reaction transforms
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