Bis(1,2,2,6,6-pentamethyl-4-piperidyl) sebacate

Bis(1,2,2,6,6-pentamethyl-4-piperidyl) sebacate, CAS 41556-26-7, is a hindered amine light stabilizer (HALS) commercially known as Tinuvin 292, LS 508, HALS 292, and UV-3765. It belongs to the piperidine-based stabilizer class and carries EC number 255-437-1. No E-code applies to this substance.

In polymer coatings and adhesive formulations, it functions by scavenging free radicals generated during UV exposure, interrupting oxidative degradation cycles before chain scission occurs. It is used in automotive and industrial coatings to extend service life under outdoor weathering conditions, and in polyolefin and polyurethane systems where long-term thermal and photo-oxidative stability is required.

This material is supplied as a solid and is subject to REACH registration requirements within the European Economic Area. Procurement teams should confirm supplier SDS documentation, purity grade, and packaging format prior to ordering. HS code 29339900 applies for import and export classification purposes.