A 25 kg sack of micaceous iron oxide, the mineral pigment mixed with linseed oil to make grey hive paint.
It is often sold as “iron powder”, but it is a ground mineral, not metallic iron: batch analysis gives 95.75 % ferric oxide and every particle below 90 microns.
01 · THE MIX
The particles are flat flakes, with a lamellar content of around 70 %, within grade A of ISO 10601 for paint pigments. As the paint dries they overlap and lie parallel to the wood, and the standard credits them with slowing the ingress of external agents and protecting the oil from ultraviolet light. Add it gradually to the linseed oil and stir until no lumps remain. We don't give a fixed ratio: paint a test board, let it dry and adjust before mixing a larger batch.
02 · HANDLING
Pour close to the container, wearing a mask with good ventilation, and away from honey, wax and combs. Keep the sack closed and dry; the mineral has no expiry date.
03 · BEFORE YOU BUY
This is pigment, not finished paint. The specifications below come from a batch analysis and may vary slightly between batches.
| ✕ DOESN'T FIT | Uses that need metallic iron powder: this is iron oxide. |
| ⚠ NOT INCLUDED | Linseed oil, solvents or brushes. You receive one 25 kg sack. |
| LTA reference | 010604 |
|---|---|
| Product | Micaceous iron oxide, ground |
| Ferric oxide (Fe2O3) | 95.75 % (batch analysis) |
| Particle size | 100 % below 90 microns · 80 % below 63 microns |
| Lamellar content | Around 70 % · grade A to ISO 10601 |
| True density | 5.1 g/cm³ |
| Colour | Metallic grey |
| Shelf life | No expiry date |
| Pack size | 25 kg sack |

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