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    Optical Brightener OB, CAS No. : 7128-64-5

    ₹ 3,100 / kgs
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    • MOQ25 Kgs
    • CAS No.7128-64-5
    • CI No.184
    • Chemical Name2,5-thiophenediylbis(5-tert-butyl-1,3-benzoxazole)
    • Supply TypeExporter, Supplier, Importer
    • Preferred Buyer Location All over the world

    Optical Brightener OB is a high molecular weight fluorescent whitening agent which significantly improves the whiteness in thermoplastics, printing inks, Lacquers, Manmade fiber etc.   Optical Brightener OB Produces very brilliant white with light reddish Blue effect to, which compensates for yellowing to. It has good light fastness in substrates, excellent resistance to heat, high chemical stability, Soluble in a wide range of organic solvents. It gives Brilliant, Bluish white effect.
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    Company Information

    location Vasna Road, Vadodara, Gujarat
    View Number
    • calendar Member Since 13 Years
    • building Nature of Business Retailer
    • gst icon GST No. 24ACAFS2268J1Z3

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    Specification

    APPEARANCEPale Yellow Crystalline Powder
    MOLECULAR FORMULAC26 H26 N2 O2S
    MOLECULAR WEIGHT443
    MELTING POINT198 ± 30C
    SPECIFIC GRAVITY1.26
    λMAX (CHCI3)375 nm
    ASSAY:99% (Min)
    ASH0.5% (Max)
    VOLATILE MATTER0.5% (Max)

    VOLATILITY

    TGA heating rate 20OC/min in air
    Temperature (oC)
    Volatility
    Weight loss (%)
    2801
    3102
    3255


    LIGHT FASTNESS IN VARIOUS SUBSTRATES:

    SUBSTRATESLight Fastness (on Blue scale)
    PVC4-7
    PE2-4
    PP1.-4
    Cellulose Acetate5-7
    PS2-5
    Acrylic Resin Lacquers--4-5
    Polyamide3-5
    Liner Polyester7

    SOLUBILITY

    SOLVENT% SOLUBILITY
    ETHANOL0.1
    ACETONE0.5
    MEK1.3
    TOLUENE5.3
    CTC5.9
    DMF0.8
    CHLOROBENZENE10.2
    DOP0.7
    ETHYL ACETATE1.1
    MEG0.2
    CYCLOHEXANONE3.3
    XYLENE5

    Structure


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