Light Stabilizers Selection Guide
Outdoor plastics and coatings fail by UV absorption or by radical degradation at the surface. The right stabilizer depends on substrate thickness, exposure, and whether the part is thick-section or a thin film.
Your exposure scenarioStabilizer strategyNotes
Thick-section parts (auto trim, outdoor furniture)HALS primary, optionally UV absorberHALS regenerate; low surface-area loss
Thin films & fibers (ag film, tapes)UV absorber + HALS combinationSurface area high; absorber needed to block bulk UV
Clear coatings over sensitive substratesUV absorber (liquid/transparent) + HALSAbsorber protects substrate; HALS protects film
Pigmented systems, harsh climatesHigh-molecular-weight HALSLower migration; longer-term durability
Full chemistry comparison and decision rules: HALS vs UV Absorbers. Spec sheets with CAS, molecular weight and dosage guidance are available per grade on request.
HonorStab™ HS-7019 HS-7019 Request Quote Product Overview Bisphosphite Antioxidant — a light stabilizer / antioxidant supplied by Honor Chemicals. Identification CAS No. 26741-53-7 Typical Properties Property Specification Appearance White powder or granules Content 98 min % Melting Point 170-180 °C
HonorStab™ HS-7020 HS-7020 Request Quote Product Overview Benzotriazole UV Absorber — a light stabilizer / antioxidant supplied by Honor Chemicals. Identification CAS No. 70321-86-7 Typical Properties Property Specification Appearance Pale yellow powder Content 99 min % Melting Point 137-141 °C Ash 0.1 max Volatile Matter 0.3 max Light Transmittance 460nm 97 min
HonorStab™ HS-7021 HS-7021 Request Quote Product Overview Benzotriazole UV Absorber — a light stabilizer / antioxidant supplied by Honor Chemicals. Identification CAS No. 3896-11-5 Typical Properties Property Specification Appearance Pale yellow powder Content 99 min % Melting Point 137-142 °C Ash 0.1 max Volatile Matter 0.5 max Light Transmittance 460nm 93 min
HonorStab™ HS-7022 HS-7022 Request Quote Product Overview Benzotriazole UV Absorber — a light stabilizer / antioxidant supplied by Honor Chemicals. Identification CAS No. 25973-55-1 Typical Properties Property Specification Appearance pale yellow powder particles Melting Point 79-88 °C Ash 0.1 max Volatile Matter 0.5 max Light Transmittance 460nm 95 min 500nm 97 min
HonorStab™ HS-7023 HS-7023 Request Quote Product Overview Benzotriazole UV Absorber — a light stabilizer / antioxidant supplied by Honor Chemicals. Identification CAS No. 3147-75-9 Typical Properties Property Specification Appearance Off-white powder Content 98.5 min % Melting Point 103-106 °C Ash 0.1 max Volatile Matter 0.3 max Light Transmittance 440nm 97 min
HonorStab™ HS-7024 HS-7024 Request Quote Product Overview Benzotriazole UV Absorber — a light stabilizer / antioxidant supplied by Honor Chemicals. Identification CAS No. 103597-45-1 Typical Properties Property Specification Appearance pale yellow powder Melting Point 197-199 °C Ash 0.1 max Volatile Matter 0.5 max Light Transmittance 460nm 97 min
HonorStab™ HS-7025 HS-7025 Request Quote Product Overview Benzotriazole UV Absorber — a light stabilizer / antioxidant supplied by Honor Chemicals. Identification CAS No. 2440-22-4 Typical Properties Property Specification Appearance White to light yellow crystalline particles Content 99 min % Melting Point 128-132 °C Ash 0.1 max Loss on Drying 0.5 max Light Transmittance 440nm 97 … Read more
