Why It Matters
Producers of outdoor, automotive and agricultural plastics add light stabilizers to prevent UV-driven chalking, yellowing and embrittlement. The system splits between UV absorbers (benzotriazole/benzophenone) that screen incident UV and HALS radical traps that interrupt the photo-oxidation cycle; buyers search by both function and Tinuvin/Chimassorb trade names
Solution Approach
Producers of outdoor, automotive and agricultural plastics add light stabilizers to prevent UV-driven chalking, yellowing and embrittlement. The system splits between UV absorbers (benzotriazole/benzophenone) that screen incident UV and HALS radical traps that interrupt the photo-oxidation cycle; buyers search by both function and Tinuvin/Chimassorb trade names RawSource supplies the base chemicals that go into these programs. We can help with product selection, grade matching, and sourcing from multiple origins for supply security.
Typical Treatment Workflow
1
System Assessment
Characterize operating conditions—fluid composition, temperature, pressure, flow rates—and benchmark current treatment performance.
2
Chemistry Selection
Match base chemicals to your operating envelope. Factor in compatibility with existing programs, regulatory constraints, and downstream impacts.
3
Dosage & Delivery
Determine optimal treat rates through jar testing or field trials. Configure packaging (drums, totes, ISO tanks) to match consumption and storage logistics.
4
Monitoring & Adjustment
Track KPIs—coupon rates, residuals, separator performance, water quality. Adjust chemistry and dosage as conditions change.
Recommended Chemistries (4)
UV-328 Benzotriazole UV Absorber (Tinuvin 328 Type)
CAS 25973-55-1
Specialty Additives
Organic UV absorber
Hydroxyphenyl-benzotriazole UV absorber; absorbs 300-380 nm UV and dissipates it as heat to protect the polymer from chain scission
Physical Description: Dry Powder, Pellets or Large Crystals; NKRA; Ot… Appearance: White to yellow powder or crystals Solubility: In water, log -1.37
Full Details
Benzophenone-3
CAS 131-57-7
Specialty Additives
UV Protection
Benzophenone UV absorber; harmlessly dissipates absorbed UV energy as a low-cost broad screen
Melting Point: 66 °C Boiling Point: 150–160 °C at 5 mmHg Density: 1.32 at 25 °C
Full Details
Bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate (HALS, Tinuvin 770 type)
CAS 52829-07-9
Hindered-amine light stabilizer; the nitroxyl/NO regenerative cycle scavenges chain-propagating free radicals to interrupt photo-oxidation (not a UV absorber) (source on demand)
Full Details
Polymeric HALS (Chimassorb 944 type)
CAS 71878-19-8
High-molecular-weight oligomeric HALS with low volatility and extraction resistance for thick sections and long outdoor service life (source on demand)
Full Details