Bisoctrizole

Bisoctrizole (CAS 103597-45-1) is an organic UV absorber commercially known under trade names including Tinosorb M, Tinuvin 360, and Mark LA 31. It belongs to the triazine-benzotriazole chemical class and carries EC number 403-800-1. No E-code designation applies to this substance.

In sunscreen and personal care formulations, bisoctrizole functions by absorbing UV radiation across both UVA and UVB ranges, converting photon energy into heat rather than allowing photodegradation of the substrate. In polymer and coatings systems, it suppresses oxidative chain reactions and thermal degradation, extending the service life of the finished material.

Bisoctrizole is supplied in compliance with REACH regulation and is available for procurement across personal care, coatings, and plastics applications. Standard commercial grades are offered in solid form suitable for solvent-based and emulsion processing. Packaging formats are available on request; buyers should confirm grade specifications against their regional regulatory requirements prior to formulation.