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Graphtol Black CLN


Edition Date :
July 08, 2021

Graphtol Black CLN is a pigment based black colorant not absorbing in the NIR light spectra. It exhibits excellent fastness properties and is suitability for various polymers, especially HDPE and PP. Tested suitable for plastic type identification using the microPHAZIR PC from Thermo Fisher Scientific.


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Graphtol Black CLN

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Product Data


Physical and Chemical Properties

Density  [g/cm³] 1.87
Bulk volume[l/kg] 3.3 - 6.7
Average particle size [nm]-
Alkali resistance 5
Acid resistance 5
Specific surface [m2/g]-



Fastness Properties 

Pigment loading[%]
Hue angle [°]293.615.1144.9
Light fastness (Full shade) 888
Heat resistance SD 1/3 (Reduction) [°C]300300300


Suitable Limited suitabilityNot suitable
 PVC/Rubber  PA
 PUR  PET Fiber
 PP Fiber  PA Fiber

Limiting concentration in HDPE


NIR Reflection Curve



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