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MilliporeSigma

440345

Supelco

Glass spheres

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About This Item

Fórmula empírica (notación de Hill):
O2Si
Número de CAS:
Peso molecular:
60.08
EC Number:
MDL number:
UNSPSC Code:
23201100
PubChem Substance ID:
NACRES:
SB.52

grade

high-purity grade

Quality Level

form

powder

technique(s)

LPLC: suitable

surface area

125 m2/g

matrix

Silica

matrix active group

silica

mean particle size

9-13 μm

density

1.1 g/mL at 25 °C (lit.)

suitability

suitable for acidity or alkalinity (alkalinity < 0.5 meq/g ASTM D 3100)

SMILES string

O=[Si]=O

InChI

1S/O2Si/c1-3-2

InChI key

VYPSYNLAJGMNEJ-UHFFFAOYSA-N

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General description

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.

Application

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.

Features and Benefits

Light weight, crush-resistant filler. Imparts dimensional stability, reduces warpage, reduces plastic melt viscosity and provides multidirectional orientation in reinforced composites.

Physical form

Hollow, spherical non-porous glass beads.

Storage Class

11 - Combustible Solids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type P3 (EN 143) respirator cartridges


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Norma A Sánchez-Flores et al.
Journal of colloid and interface science, 323(2), 359-364 (2008-05-27)
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
The Heat Capacities of Quartz, Cristobalite and Tridymite at Low Temperatures
Anderson, C. Travis.
Journal of the American Chemical Society, 58, 568-570 (1936)
Silica-assisted catalytic growth of oxide and nitride nanowires.
Tang, C. C., et al.
Chemical Physics Letters, 333, 12-15 (2001)
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Plasmonic resonances in metal nanoparticles are considered candidates for improved thin film Si photovoltaics. In periodic arrays the influence of collective modes can enhance the resonant properties of such arrays. We have investigated the use of periodic arrays of Al

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