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Xirallic® NXT F250-51 Cougar Red

Xirallic® NXT F250-51 Cougar Red by Merck KGaA, Darmstadt Germany is an industrial pigment offering red interference color. It is composed of aluminum oxide (50-60%) and iron oxide (40-50%). It shows high chroma, color hues and sparkle intensity. It exhibits powerful colors, purity, brilliance and intensity. Xirallic® NXT F250-51 Cougar Red provide exceptional sparkle and flop behavior as well as superior performance. Recommended for use in plastics.

Original Datasheet:
In the United States, Canada and Puerto Rico the performance materials business of Merck KGaA, Darmstadt, Germany operates as EMD Performance Materials.
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Xirallic® NXT F250-51 Cougar Red
Product Type
Special Effect Pigments > Iridescent / Interference Pigments
CAS Number
1344-28-1, 1309-37-1
Physical Form
Powder, Dry, free-flowing
Product Status

Xirallic® NXT F250-51 Cougar Red Properties


Value & Unit
Test Condition
Test Method
Particle Size
5 - 40 µm
(> 80% of particles within range)
3.9 - 4.3 g/cm3
ISO 787-10
Bulk Density
27 - 37 g/100 ml
ISO 3923-2

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