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Glass spheres

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About This Item

Formula empirica (notazione di Hill):
O2Si
Numero CAS:
65997-17-3
Peso molecolare:
60.08
Numero CE:
266-046-0
Numero MDL:
MFCD00147032
Codice UNSPSC:
23201100
ID PubChem:
24867590
NACRES:
SB.52

Grado

high-purity grade

Forma fisica

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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Categorie correlate

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.

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

Certificati d'analisi (COA)

Cerca il Certificati d'analisi (COA) digitando il numero di lotto/batch corrispondente. I numeri di lotto o di batch sono stampati sull'etichetta dei prodotti dopo la parola ‘Lotto’ o ‘Batch’.

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Sigma-Aldrich

Sigma-Aldrich

G9018

Glass beads, unwashed

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Sigma-Aldrich

G1277

Glass beads, acid-washed

Silica-assisted catalytic growth of oxide and nitride nanowires.
Tang, C. C., et al.
Chemical Physics Letters, 333, 12-15 (2001)
The Heat Capacities of Quartz, Cristobalite and Tridymite at Low Temperatures
Anderson, C. Travis.
Journal of the American Chemical Society, 58, 568-570 (1936)
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
Keren B Turton et al.
PloS one, 10(5), e0127243-e0127243 (2015-05-20)
Signal transducer and activator of transcription 3 (STAT3) is a key mediator of leukocyte differentiation and proliferation. The 3' end of STAT3 transcripts is subject to two alternative splicing events. One results in either full-length STAT3α or in STAT3β, which
Manuela Piazzi et al.
FASEB journal : official publication of the Federation of American Societies for Experimental Biology, 29(4), 1383-1394 (2015-01-01)
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