Appearance                                  Clear colorless liquid

        Purity(% )                                     99.95 min

        Moisture(%)                                 0.02 min

        PH                                               6.5-7.5

     F-                            1.0ppm max

    Heavy metal(Pb⁺)                        1.0ppm max

       Color(APHA)                                5-8

  Residue on evaporation      10ppm  max