1.01076

Aluminium oxide 90 active basic (0.063-0.200 mm)

(activity stage I) for column chromatography

• UNSPSC Code: 41115711

Properties

• material: aluminum oxide (irregularly-shaped)
• Quality Level: 100
• 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

Description

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.

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

Safety Information

• Storage Class Code: 13 - Non Combustible Solids
• WGK: nwg
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable