The material in question is not "fused" silica and can be characterized as amorphous. Unlike fused silica, which is made at very high temperatures exceeding 1000°C to densify and crystallize it, the material is based on the Stober process and does not undergo temperatures greater than 150°C. This amorphous versus crystalline distinction could account for the difference in refractive index.
904376
Silica
monodisperse, non-porous, 20 μm
Synonym(s):
Monodisperse silicon dioxide, Non-porous silica, Non-porous silicon dioxide, Silica, Silicon dioxide
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2 G
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About This Item
Linear Formula:
SiO2
CAS Number:
Molecular Weight:
60.08
UNSPSC Code:
41123003
NACRES:
NA.23
MDL number:
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Product Name
Silica, monodisperse, non-porous, 20 μm
InChI
1S/O2Si/c1-3-2
SMILES string
O=[Si]=O
InChI key
VYPSYNLAJGMNEJ-UHFFFAOYSA-N
form
powder
bp
2230 °C (lit.)
mp
>1600 °C (lit.)
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Related Categories
1 of 4
This Item | 938254 | 904384 | 938238 |
|---|---|---|---|
| form powder | form powder | form powder | form powder |
| mp >1600 °C (lit.) | mp >1600 °C (lit.) | mp >1600 °C (lit.) | mp >1600 °C (lit.) |
| bp 2230 °C (lit.) | bp 2230 °C (lit.) | bp 2230 °C (lit.) | bp 2230 °C (lit.) |
Application
Monodisperse nonporous silica nanoparticles find application in drug delivery and molecular imaging[1][2] whereas micron sized particles are used in liquid chromatography[3]. We offer highly monodisperse (coefficient of variance <10%) nonporous silica in size varying from 150 nm to 50 μm. The high monodispersity of our particles makes them suitable for aforementioned applications.
Storage Class
11 - Combustible Solids
wgk
nwg
flash_point_f
Not applicable
flash_point_c
Not applicable
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Practical Examination of a Nonporous Silica Stationary Phase for Reversed-Phase Fast LC Applications.
Jenke D R,et al.
Journal of Chromatographic Science, 34, 362-362 (1999)
Practical Examination of a Nonporous Silica Stationary Phase for Reversed-Phase Fast LC Applications
D R Jenke
Journal of Chromatographic Science, 34, 362-362 (1999)
Martha Kim et al.
Scientific reports, 7(1), 8238-8238 (2017-08-16)
Nonporous silica nanoparticles (SiNPs) have potential as promising carriers for ophthalmic drugs. However, the in vivo safety of ocular topical SiNPs remains unclear. This study investigated the in vivo safety of oral and ocular topical applications of 100 nm-sized SiNPs in
Li Tang et al.
Nano today, 8(3), 290-312 (2013-09-03)
Nanomedicine, the use of nanotechnology for biomedical applications, has potential to change the landscape of the diagnosis and therapy of many diseases. In the past several decades, the advancement in nanotechnology and material science has resulted in a large number
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Could you please confirm if 904376-2G is made of fused silica? It was found that the refractive index of the microspheres is lower than the expected value for fused silica by about 0.023. For instance, at 1100nm, the measured refractive index is 1.426, while the value for fused silica is expected to be 1.449. If it is indeed fused silica, is there a reason why the refractive index is lower than the expected value?
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