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    2,5-??(5-??-??????-2-?)????

    2,5-??(5-??-??????-2-?)????
    2,5-??(5-??-??????-2-?)???? ??? ???
    ?? ??:
    7128-64-5
    ???:
    2,5-??(5-??-??????-2-?)????
    ???(??):
    2,5-??(5-??-??????-2-?)????;2,5-??(5-??-??????-2-?)????(2,5-Bis(5-tert-butylbenzoxazol-2-yl)thiophene);??(t-???????)???
    ???:
    2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene
    ???(??):
    BBOT;B-184;UVITEX;bbot150;FBA 184;UVITEX 2B;UVITEX OB;7128-64-5;OptiblancPL;EUTEX OB-RC
    CBNumber:
    CB3434574
    ???:
    C26H26N2O2S
    ??? ??:
    430.56
    MOL ??:
    7128-64-5.mol

    2,5-??(5-??-??????-2-?)???? ??

    ???
    199-201 °C(lit.)
    ?? ?
    531.2±45.0 °C(Predicted)
    ??
    1.26
    ???
    1.6360 (estimate)
    ???
    >350°C
    ?? ??
    Keep in dark place,Sealed in dry,Room Temperature
    ???
    toluene: soluble50mg/mL
    ??? ??
    powder
    ?? ?? (pKa)
    3.03±0.10(Predicted)
    ???
    Soluble in acetone and toluene. Insoluble in water.
    ?? ??(λmax)
    373nm(EtOH)(lit.)
    Merck
    14,1014
    BRN
    631803
    ???
    Stable. Incompatible with strong oxidizing agents.
    InChIKey
    AIXZBGVLNVRQSS-UHFFFAOYSA-N
    CAS ??????
    7128-64-5(CAS DataBase Reference)
    NIST
    Benzoxazole, 2,2'-(2,5-thiophenediyl)bis[5-(1,1-dimethylethyl)-(7128-64-5)
    EPA
    ??
    • ?? ? ?? ??
    ?? ???? ?? 36/37/38
    ????? 24/25
    WGK ?? 1
    RTECS ?? DM4888332
    TSCA Yes
    HS ?? 29349990
    ?? LD50 orl-rat: >10 g/kg MVCRB3 2,193,1973
    ???? ?? KE-33798
    ????(GHS):
    ?? ?:
    ??·?? ??:
    ?? ??·?? ?? ?? ?? ?? ?? ? ?? ?? P- ??
    ??????:
    NFPA 704
    0
    1 0

    2,5-??(5-??-??????-2-?)???? MSDS


    Fluorescent Brightener 184

    2,5-??(5-??-??????-2-?)???? C??? ??, ??, ??

    ??? ??

    light yellow-green crystals

    ??

    Optical brightener additive in polymers, fibers, films, inks, laquers, and paints. In liquid scintillators.

    ??

    2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene is used as an optical brightener which converts UV light into visible light. It is also used as a fluorescent brightener for thermoplastic resins of polyvinyl chloride, acrylic resin, polyester fiber, paint, coating and printing ink. It is also useful in detecting the presence of thin-film electrical contact lubricants.

    Safety Profile

    Low toxicity by ingestion. Whenheated to decomposition it emits toxic vapors of NOx andSOx.

    Properties and Applications

    TEST ITEMS

    SPECIFICATION

    APPEARANCE

    LIGHT YELLOW OR MILK WHITE POWDER

    SHADE

    LIGHT YELLOWISH

    METLING POINT

    201-202 ° C

    PURITY

    99% min

    FINENESS

    300 mesh min

    SOLUBILITY

    hardly soluble in water,but soluble in paraffin, mineral oils and ordinary organic solvents.

    2,5-??(5-??-??????-2-?)???? ?? ?? ? ???

    ???

    ?? ??


    2,5-??(5-??-??????-2-?)???? ?? ??

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    ??? ?? ?? ??? ?? ?? ? ??
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