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UV absorber UV - 531
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4 - octyl oxygen radicals hydroxyl - diphenyl ketone (Benzopheno - 12)
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Alias: ultraviolet absorber UV - 531, diphenyl ketone - 12
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Molecular formula: C21H26O3
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Molecular weight: 326.43
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CAS number: [1843-05-6]
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Structured: light yellow crystalline powder
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Melting point: 47.0 to 49.0 ℃
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Content: 99.0% or higher
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Ash: < 0.1%
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Transmittance: (450 nm) : > 90%
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(500 nm) : > 95%
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Packing: paperboard barrel 25 kg/barrel
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Storage: sealed, avoid light
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Purpose:
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Is a kind of performance is remarkable effective anti aging additives, sodium absorbing 240-340 meters of ultraviolet light, color light, non-toxic, good intermiscibility, mobility is small, easy processing characteristics. It has the greatest protection to the polymer, and helps to reduce color, delay the yellowing and block physical performance loss at the same time. It is widely used in PE, PVC, PP, PS, PC, organic glass, etc. But for dry phenolic and alcoholic acid varnish, polyurethane, acrylic, epoxy and other air drying products and automotive repair paint, powder coating, polyurethane, rubber products, etc., provides them with good light stability results.
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