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Magnetite powder

Magnetite is a ferri-magnetic material with good thermal conductivity and heatable by microwaves. Inoxia holds stock magnetite powder in two grades.


This product is of natural origin, mined and processed in Sweden. It is a fine powder with a high density, suitable for making high density components, improving sound dampening, stabilisation and adding a quality feel.

The low cost, high density and ferri-magnetic properties makes it an excellent material for coil cores and other work with magnetism.

Synthetic micronized

A high performance micronized pigment. The predominant particle size is 0.2 microns with a lower density and higher purity than the naturally sourced material.


Grade Natural Synthetic
Particle size: 95% < 200 mesh (~75µm) 99.995% < 325 mesh (~45µm)
Purity: - >96.8% Fe3O4
Colour: Greyish - black Pigment black 11 (77499)
Particle Shape: Irregular, low aspect ratio Spherical
Density (Solid): 5.2 g/cm3 4.6 g/cm3
Density (Bulk): 1.9 - 2.6 g/cm3 0.8 - 1.2 g/cm3
Formula: Fe3O4 Fe3O4


  • Electrostatic dissipative (ESD) paints and plastics.
  • Coil cores.
  • Magnetism experiments.
  • Ferrofluid (Synthetic grade only)

Buy Magnetite powder

Weight Cost Quantity
100g (Natural) £2.60
100g (Synthetic) £3.90
500g (Natural) £5.40
500g (Synthetic) £9.90
1kg (Natural) £10.80
1kg (Synthetic) £15.50
6kg (Natural) £37.10
6kg (Synthetic) £68.90
25kg (Natural) £97.00
25kg (Synthetic) £180.00


Read label before use. Keep out of reach of children. If medical advice is needed, have product container or label at hand.
Irritating to eyes. Irritating to respiratory system. Harmful if swallowed
Do not breathe dust. Avoid contact with eyes. Keep away from food, drink and animal feedingstuffs. When using do not eat or drink. If swallowed, seek medical advice immediately and show this container or label.


Magnetite powder MSDS

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