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Polymer Additives
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Iriotec® 8835

Iriotec® 8835 by Merck KGaA, Darmstadt Germany is a laser marking additive for bright markings in polymers with a carbon black content <0.2%. It is mica (23-35%) coated with ferric oxide (Fe3O4, 65-77%). Iriotec® 8835 is stable in all polymers under normal processing conditions. Recommended dosage level is 0.4% in combination with 0.1% carbon black.

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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Product Type
Other Additives for Thermoplastics > Laser Marking Additives
Chemical Composition
Mica coated with ferric oxide
CAS Number
1317-61-9, 12001-26-2
Physical Form
Powder, Free Flowing, Dry
Product Status
Applications/ Recommended for
Visual aspect & aesthetics > Coloration

Iriotec® 8835 Properties


Value & Unit
Test Condition
Test Method
Particle Size
< 15 μm
(Laser Diffraction Measurement)
3.8 - 4.0 g/cm3
ISO 787-10
Bulk Density
57 - 63 g/100 ml
ISO 3923-2

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