1.01076
Aluminium oxide 90 active basic (0.063-0.200 mm)
(activity stage I) for column chromatography
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About This Item
UNSPSC Code:
41115711
Recommended Products
material
aluminum oxide (irregularly-shaped)
Quality Level
matrix active group
Irregular-Shaped Aluminum Oxide
particle size
63-200 μm
pore size
9 nm mean pore size
pH
8.5-10.5 (20 °C, 100 g/L in H2O, slurry)
bp
2980 °C/1013 hPa
mp
2050 °C
density
4.0 g/cm3 at 20 °C
bulk density
500‑900 kg/m3
application(s)
plasma purification
separation technique
normal phase
storage temp.
no temp limit
Related Categories
General description
A versatile sorbent for preparative chromatography exhibiting a higher pH stability
Features and Benefits
Aluminum Oxide 90 active basic provides users with:
An aluminum oxide crystal structure comprises octahedrally and tetrahedrally coordinated aluminum coupled by oxygen atoms. The surface is covered by free hydroxyl groups. There are different acidic and basic centers that result in anion and cation exchange properties. Aluminum oxide exhibits a higher pH-stability than silica gel, especially in the alkaline range and occurs in various crystal modifications resulting in different pore diameters.
An aluminum oxide crystal structure comprises octahedrally and tetrahedrally coordinated aluminum coupled by oxygen atoms. The surface is covered by free hydroxyl groups. There are different acidic and basic centers that result in anion and cation exchange properties. Aluminum oxide exhibits a higher pH-stability than silica gel, especially in the alkaline range and occurs in various crystal modifications resulting in different pore diameters.
Packaging
Plastic bottle
Analysis Note
Activity: I
pH-value (10 % suspension): 8.5 - 10.5
Substances extractable by water: ≤ 0.2 %
Chloride (Cl): ≤ 0.004 %
Sulfate (SO₄): ≤ 0.1 %
Speed of filtration: ≥ 0.3 ml/min
Particle size: 70 % between 0.063 - 0.200 mm
Setting of activity according to the Brockmann activity grades adjusted to a migration distance of 30 mm:
I: activity I
II: activity II
III: activity III
IV: activity IV
V: activity V
pH-value (10 % suspension): 8.5 - 10.5
Substances extractable by water: ≤ 0.2 %
Chloride (Cl): ≤ 0.004 %
Sulfate (SO₄): ≤ 0.1 %
Speed of filtration: ≥ 0.3 ml/min
Particle size: 70 % between 0.063 - 0.200 mm
Setting of activity according to the Brockmann activity grades adjusted to a migration distance of 30 mm:
I: activity I
II: activity II
III: activity III
IV: activity IV
V: activity V
wgk_germany
nwg
flash_point_f
Not applicable
flash_point_c
Not applicable
Certificates of Analysis (COA)
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