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    Phthalic anhydride

    Phthalic anhydride


    Product Identification:

    CAS No.85-44-9

    Molecular formula: C8H4O3  
     

    Specification:

    ITEMS OF ANALYSIS

    SPECIFICATION

    APPEARANCE:

    WHITE FLAKE OR CRYSTALLINE POWDER

    MELTING COLOR(PT/CO)≤

    20APHA Max.

    HEATING COLOR(PT/CO)≤

    50APHA Max.

    SULPHURIC ACID CLOUR INDEX(PT/CO)≤

    40APHA Max.

    SOLIDIFICATION POINT

    130.8Degree C Min

    PURITY

    99.50%Min.

    FREE ACID

    0.20%

     

    Packing:

    25kg/bag

     

    Application:

    1.use for plasticizer manufacturing.

    2.Phthalic anhydride and polyols (such as glycerol, pentaerythritol) can generate polyarylate resin in condensation way, used in paint industry;


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