53698
Silica gel Inorganic Sorbent
spherical, 200-360 mesh
别名:
Silica gel
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关于此项目
化学文摘社编号:
UNSPSC Code:
23201100
PubChem Substance ID:
NACRES:
SB.52
EC Number:
231-545-4
MDL number:
产品名称
硅胶, 40-75 μm particle size
grade
high-purity grade
Quality Segment
form
powder
manufacturer/tradename
Sigma-Aldrich
technique(s)
LPLC: suitable
surface area
450-550 m2/g
loss
~5% loss on drying
matrix
Silica
matrix active group
silica
particle size
200-400 mesh, 40-75 μm
pore size
0.7-0.9 cm3/g pore volume, 60 Å pore size
pH
~7 (5% in H2O, suspension)
bp
2230 °C
mp
>1600 °C
separation technique
hydrophilic interaction (HILIC)
SMILES string
O=[Si]=O
InChI
1S/O2Si/c1-3-2
InChI key
VYPSYNLAJGMNEJ-UHFFFAOYSA-N
General description
Silica gel is a rigid 3D network of colloidal silica. It is exclusively used as a support material for the active titanium (III) centers in Ziegler-Natta catalysts. Silica gel allows a controlled fragmentation leading to form uniform polymer particles with narrow particle size distribution and high bulk density. Silica gel is classified as below:
a. Aquagel - pores are filled with water
b. Xerogel - by the process of evaporation, aqueous phase in the pores are removed
c. Aerogel - solvent removed by supercritical extraction.
a. Aquagel - pores are filled with water
b. Xerogel - by the process of evaporation, aqueous phase in the pores are removed
c. Aerogel - solvent removed by supercritical extraction.
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存储类别
11 - Combustible Solids
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闪点 (F)
Not applicable
闪点 (°C)
Not applicable