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Sunvin 31 exhibits very effective protection of polymers against UV lights exposure. UV-531 retards yellowing, embrittlement and mechanical degradation of the polymers when properly used. UV-531 is particularly recommend for the light stabilization of PP, PE and PVC. It is also effective in polycarbonate, polyester, acrylics, EVA, and other polymers.

Functions: UV Absorber

Chemical Family: Benzophenones

Compatible Polymers & Resins: Polyethylenes (PE), Polypropylenes (PP), Polyvinyl Chloride (PVC)

Features: Chemical Resistant, Excellent Compatibility, Excellent UV Stability, Heat Stabilized, High Purity, Low Toxicity, Low Volatility

    Knowde Enhanced TDS

    Identification & Functionality

    Chemical Family
    Plastics & Elastomers Functions
    CAS No.
    1843-05-06
    Chemical Name

    2-Hydroxy-4-octoxy benzophenone

    Features & Benefits

    Labeling Claims
    Features
    • Very high photostability for its strong ability to absorb light especially in UV region(300-400nm)
    • No effect on the odor of the resins.
    • Very low vapor pressure, prevents product from loss during processing.
    • Very high heat resistance, without significant degradation or volatility at proper extrusion temperature.
    • High purity, no adverse effects due to impurities.

    Applications & Uses

    Applications
    • Polypropylene : 0.2~0.5% on the polymer weight
    • Polyethylene : 0.2~0.5% on the polymer weight.
    • Polyvinyl chloride: 0.5~2% for plasticized PVC by weight basis about 0.5% for rigid PVC by weight basis.

    Properties

    Physical Form
    Appearance
    Slightly yellowish crystal powder
    Typical Properties
    ValueUnitsTest Method / Conditions
    Molecular Weight326
    Assaymin . 99%
    Ash Contentmax. 0.3%
    Melting Point46.5 - 49°C
    FormulaC21H26O3

    Safety & Health

    Toxicity & Safety

    UV-531 can be safely handled without irritation caused to the skin.

    Packaging & Availability

    Packaging Type
    Packaging

    In 25 kg carton drum with inner plastic bag.

    Storage & Handling

    Storage

    In a closed system and dry, dark place without any light exposure.