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      Tetrachlorophthalic anhydride

      Synonyms: tetrachloro-1,2-benzenedicarboxylic acid anhydride; niagathal; 4,5,6,7-tetrachloro-1,3-isobenzofurandione;
      Structural formula:

      Molecular weight: 285.9
      Index:

      Index name

      Index

      Appearance

      white crystal or colorless prism needle-like

      Assay

      ≥99%

      Melting point

      254-256℃

      Boiling point

      371℃

      Flash point

      362℃

      Loss on drying

      ≤0.5%

      Free chlorine

      ≤10ppm

      Fe

      ≤10ppm

      Alkali insoluble matter

      ≤0.5%

      HCB

      ≤0.1%

      Uses: mainly used in intermediate of drug, pesticide , dye, pigment, fire retardant of resin, plastic reinforcing agent
      Packing: 25kg/paper-plastic laminated bag; 40kg/paper-plastic laminated bag; 750kg/bulk bag

       

       
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