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Absolute Mag™ Carboxyl Magnetic Dextran Nanoparticles, 130 nm(WHM-G083)


Absolute Mag™ Carboxyl Magnetic Dextran Nanoparticles, 130 nm (# WHM-G083) are prepared by precipitation of iron oxide in the presence of dextran. These nanoparticles are designed with carboxylic acid groups on the surface for the covalent binding of proteins, antibodies or other molecules by carbodiimide chemistry. These magnetic nanoparticles are cluster-typed shaped and can be separated in a high gradient magnetic field. Polydispersity index: < 0.25.

Application Notes
Contrast agents for Magnetic Resonance Imaging (MRI) and Magnetic Particle Imaging (MPI).
Polydispersity Index
< 0.25
Particle Size
130 nm
Functional Group
10 mg/mL
Storage Buffer
Suspension in water.
Unit Size
10 mL
Number of Particles
6.3E+12 particles/mL
Binding Capacity
1.5-2.0 µg albumin (BSA)/mg particle (8-10 molecules albumin per particle)
Surface Group Density
1 µmol/g iron
1.4 g/ccm
76 Am2/kg iron (H = 80 kA/m)
Saturation Magnetization
>87 Am2/kg iron (H> 800 kA/m)
Coercive Field Hc
0.5 kA/m
Stable in aqueous buffers pH> 4. Not stable in organic solvents, acidic solutions pH < 4.
Storage at 2 - 8 °C for 6 months.
Shelf Life
When stored as specified the product is stable for six months.

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