Polymers & Resins Available — Bulk Only

HALS-944 Light Stabilizer (Polymeric Triazine-Piperidine HALS)

CAS 70624-18-9

This is a high-molecular-weight polymeric hindered amine light stabilizer (HALS) built on a triazine and tetramethylpiperidine backbone. It protects polyolefins and other polymers from UV-induced degradation by scavenging the free radicals generated during photo-oxidation, regenerating active species so it works catalytically. Its oligomeric structure gives very low volatility and strong resistance to extraction, making it suited to long-service-life applications

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CAS Number
70624-18-9
Material Family
Polymers & Resins
At a Glance
Material Family
Polymers & Resins
Record Type
Polymer fluid
Primary Role
UV Protection
Functional Roles
Applications & Use Cases
  • Long-term UV/light stabilization of polyolefin (PP/PE) films, fibers and molded parts
  • Low-volatility HALS for agricultural and greenhouse films needing extended outdoor life
  • Light stabilization of TPE, PU, PA and PS
  • Weathering protection of thick-section polyolefin parts
Safety & Handling
Full SDS available on request

A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.

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Chemical Identity
CAS Number
70624-18-9
Synonyms & Trade Names
HALS Polymeric HALS Hindered amine light stabilizer Poly-1,3,5-triazine-2,4-diyl]-1,6-hexanediyl] Comparable to Chimassorb 944
Full Description

The polymer is used for long-term UV protection of polypropylene and polyethylene films, tapes, fibers and thick-section molded parts, where its high molecular weight resists migration and loss during both processing and outdoor weathering. It is a common choice for agricultural and greenhouse films that must survive years of sun exposure, and it also stabilizes TPE, PU, PA and PS. Because HALS act as radical scavengers rather than UV absorbers, even relatively thin sections and low loadings can achieve durable, long-lasting weathering performance

Disclaimer. Information on this page — including properties, identifiers, hazard, transport (DOT/UN) and tariff (HS) classifications, and applications — is provided for general reference and is compiled from authoritative public sources (e.g. PubChem/ECHA, 49 CFR 172.101, the Harmonized Tariff Schedule). Values are typical and are not a guaranteed specification; the Certificate of Analysis (CoA) for the lot purchased governs. Products are sold for industrial and professional use only. Nothing here is a medical, health, or efficacy claim or advice. Always consult the current Safety Data Sheet (SDS) before handling, storage, transport or disposal, and confirm regulatory status, classification and suitability for your application and jurisdiction. Hazard, transport and tariff classifications must be verified for your specific shipment. RawSource makes no warranty, express or implied, and assumes no liability for use of this information. Trademarks. Third-party trademarks and brand names are the property of their respective owners; any reference is nominative — used only to identify a comparable product — and does not imply affiliation with, sponsorship by, or endorsement by the trademark owner.