Iron oxide black C770 is recommended to be used in paving stones, concrete blocks, roofing tiles, bricks, slurry, asphalts, sports racetracks etc..
| Specification | Value |
| Appearance | Most Bluish black powder |
| Content of Fe2O3, % | 90 min. |
| pH value | 5-8 |
| Shade | Close to std. |
| Oil Absorption, % | 15-25 |
| Residue on 320 mesh, % | 0.5 max. |
| Water soluble, % | 0.5 max. |
| Volatile at 105℃ | 1.5 max. |
| Tinting strength, % | 98-102 |
| DE (compared with std,) | 0.5 max. |
