Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Clariant KSN Fluorescent Brightener

Clariant KSN is a yellow powder, non-ionic benzoxazole derivative brightener for plastics/polyester. It has good thermal stability, excellent migration resistance in LDPE, delivers blue-violet whitening effect at low dosage, and enhances color brightness.

Features Of Clariant KSN Fluorescent Brightener

  1. High whitening brightness, providing neutral to blue-violet bright shade for light-toned products.

  2. Thermal stability fits high-temperature processing of plastics and chemical fiber polymers.

  3. Excellent migration resistance in LDPE, avoiding post-processing precipitation or discoloration.

  4. Flexible dosage range, adapting to whitening needs of different materials (plastics/fibers).

  5. Compatible with multiple processing steps, usable directly or as brightening masterbatch.

Typical Applications Of Clariant KSN Fluorescent Brightener

  1. Suitable for optical whitening of films, injection/compression molded plastic products.

  2. Fits dyeing whitening of chemical fibers, bristles and colored wax hairs.

  3. Used to improve whiteness and gloss of thermoplastic PVC and rigid PVC.

  4. Applied in whitening of polyester fibers with uniform and long-lasting effect.

  5. Compatible with whitening addition in polymer synthesis steps like transesterification and polycondensation.

Specifications Of Clariant KSN Fluorescent Brightener


ParameterSpecification / Value
AppearanceYellow powder
Chemical NatureBenzoxazole derivative
Ionic CharacterNon-ionic
Melting Point250 - 300 °C
Storage StabilityUnstable in humidity & sunlight
Water DilutabilityInsoluble in water
Recommended Dosage (Colored Plastics)20 - 300 ppm
Recommended Dosage (Transparent Plastics)5 - 20 ppm
Recommended Dosage (Thermoplastic PVC)Max 100 ppm
Recommended Dosage (Rigid PVC)Max 500 ppm
Recommended Dosage (Polyester Fiber)100 - 250 ppm
Masterbatch Addition Level0.5 - 20 %







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