Chemical name: 3,9-bis{2-[3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionyloxy]-1,1-dimethyl}-2,4,8,10-tetraoxaspiro[5,5]undecane CAS No.:90498-90-1 Molecular formula:C43H64O10 Molecular weight:740.97   Appearance:White Powder Assay, %: ≥ 98 Melting point,℃:112.5 - 116 Ash, %:≤ 0.1 Transmittance: 425nm ≥ 96%               500nm ≥ 98%   ANTIOXIDANT HONOX-80 is highly efficient radical scavenger, exceptional processing and long-term heat stabilization. It has excellent resistance to discoloration and particularly against NOx gas. It is used for Polyolefins (PE, PP, TPO), Engineering plastics (PBT, Polyacetal, Polyamide), Styrene polymers (HIPS, ABS), Polyurethane fiber, TPU, Latex  and unsaturated Elastomers.   Excellent synergistic effect to long term heat stability with thioether secondary antioxidant like DSTDP,DLTDP. info at hhochem. com