440345
Glass spheres
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About This Item
Empirical Formula (Hill Notation):
O2Si
CAS Number:
Molecular Weight:
60.08
NACRES:
SB.52
PubChem Substance ID:
UNSPSC Code:
23201100
EC Number:
266-046-0
MDL number:
InChI key
VYPSYNLAJGMNEJ-UHFFFAOYSA-N
InChI
1S/O2Si/c1-3-2
SMILES string
O=[Si]=O
grade
high-purity grade
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)
Quality Level
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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.
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.
a. Quartz = 1143K
b. Tridymite 1143 - 1743K
c. Cristobalite = 1743, over 1973K it forms amorphous vitreous silica glass.
Physical form
Hollow, spherical non-porous glass beads.
Storage Class
11 - Combustible Solids
wgk
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)
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
Marcelo Ramalho-Ortigão et al.
Parasites & vectors, 8, 298-298 (2015-05-30)
The Phlebotomus papatasi salivary protein PpSP15 was shown to protect mice against Leishmania major, suggesting that incorporation of salivary molecules in multi-component vaccines may be a viable strategy for anti-Leishmania vaccines. Here, we investigated PpSP15 predicted amino acid sequence variability
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