Technical datasheet
Nubifer R-2521
Supplied byVibrantz Technologies (formerly Chromaflo)- Last Updated on May 27, 2026
Nubifer R-2521 by Vibrantz Technologies (formerly Chromaflo) is a non-micronized red iron oxide with excellent outdoor durability. It shows heat-, light-and chemical fastness. It is nonbleeding, non-migratory and is recommended for general use in cement applications. Nubifer R-2521 is used in plastic applications where high dispersibility is not needed.
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Nubifer R-2521 properties
Other properties
| Properties | Value & unit | Test condition | Test method |
|---|---|---|---|
| Acid Fastness | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Alkali Fastness | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Density | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Heat Resistance | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Iron oxide Content | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Light Fastness | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Moisture Content | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Oil Absorption Number (OAN) | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Particle Size | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Soluble Salts Content | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Tinting Strength | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Weather Fastness, Mass Tone | 0.0 Visible After Login | Visible After Login | Visible After Login |