A high tinting strength and hiding power. The light resistance, good alkali resistance. No oil permeability and water permeability. Different shade with craft, yellow brown, red brown, dark brown, etc.
Iron Oxide Brown 663 is a common iron oxide pigment used in developing building materials, paints, rubber, asphalt, sports racetracks, paper, plastic and others.
For best results in solvent-borne systems, pre-disperse with a high shear disperser. In cementitious mixes, pre-wet pigment or introduce slowly to avoid clumping. For plastics, compatibilize with masterbatch when required.
| Appearance | Brown powder |
| Content of Fe2O3 % | 88 min |
| PH Value | 4.0-7.0 |
| Oil Absorption | 20-30 |
| Residue on 320 mesh,% | 0.3max |
| Water soluble, % | 0.5 max |
| Volatile at 105 degree | 1.0 max |
| Tinting strength, % | 98-102 |
Note:The data contained here are based on our current knowledge and experience. It is the responsibility of user to test our products before the final application.
We operate an in-house color lab and can produce small matched batches within days. For production runs we supply a pre-production sample and a batch color certificate to ensure on-site consistency.
Unlike resellers, we control synthesis and milling, which reduces variability. Our QA process checks particle size distribution and dispersion properties on every lot — that means less rework for you and fewer shade surprises between batches.
Yes. The pigment’s inorganic nature gives it strong weather and chemical resistance suitable for exterior concrete and outdoor coatings. For high-gloss systems, we recommend pre-dispersing and conducting small lab trials to confirm surface gloss and clarity.
We provide SDS, RoHS compliance statements and can issue bespoke environmental documentation for large orders. If you require REACH or other local compliance documents, let us know and we will coordinate supply chain paperwork.
We provide small trial samples (at cost) and flexible MOQs for new customers. For ongoing partnerships we offer tiered pricing, dedicated production windows and priority shipping options.
