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    Substance that is used to brighten, whiten, or enhance the appearance of color of fabric and paper, usually by absorbing light in the ultraviolet and violet region (340-370 nm) of the electromagnetic spectrum, and re-emitting light in the blue region (420-470 nm).

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    UV-234 Chemical name: 2-[2-hydroxy-3,5-bis( . -dimethyl benzyl)-phenyl]benzotriazole Molecular formula: C22H29N3O Structural formula: Properties: Properties and application:It is a very pale yellowish powder, melting point 139.5-141, effic

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    CHISORB® 234 - UV Absorber (Benzotriazole) CAS No. 70321-86-7

    CAS No. 70321-86-7 CHISORB® 234 protects polymers from ultraviolet radiation. Compared to other commercialized UV absorbers, CHISORB® 234 has lower volatility, which makes it especially useful for those applications involving high temperature processing. This product is an off-white to slightly yellowish crystalline powder.

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    Detection of benzotriazole UV stabilizers in the blubber of marine mammals by gas chromatography-high resolution mass spectrometry (GC-S) Article in Journal of Environmental Monitoring 12(11 .

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