UV Absorber 770 / UV-770 / Light Stabilizer 770

Hindered amine light stabilizer 770
Chemical name: bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate
English name: bis(2,2,6,6-tetramethyl-4-piperidyl)sebacate
CAS No.: 52829-07-9
Molecular formula: C28H52O4N2
Quality standard:
Appearance: white powder or granules
Light transmittance: 425nm ≥98%
      500nm ≥99%
Volatile matter: ≤0.5%   Ash content: ≤0.1%  Melting point: 81℃-86℃  Assay: ≥99.0%
Molecular weight: 480.74
Properties: colorless or pale-yellow crystalline powder, effective nitrogen content 5.83%.
Uses: Used as a light stabilizer, suitable for polypropylene, high-density polyethylene, polyurethane, polystyrene, ABS resin, etc. Light stabilizer 770 offers better light stabilization than commonly used light stabilizers. Used together with antioxidants, it improves heat resistance; used together with UV absorbers, it also has a synergistic effect, further improving light stabilization.
Toxicity: Light stabilizer 770 is low in toxicity. Japan, Canada, the United States, and other countries permit its use in polyolefin plastics that contact food. Japan and the United States stipulate a maximum usage of 0.5%, and Canada stipulates a maximum usage of 0.35%.
Storage: Light stabilizer 770 should be stored under light-proof, dry conditions at a low temperature below 30℃.
Packaging: 25 kg fiber drum with inner plastic bag.