Specifications:

        Appearance:  white powder

                 Assay:   99.5% MIN

Saponification value:  375-381mg(KOH)/g

         Acid Value:  0.3mg(KOH)/g MAX

Sodium Sulphate: 100ppm MAX

                   Iron:    4ppm MAX

            Moisture:    0.3% MAX.

This product is mainly used in producing polyester,film,etc. Especially, in the field of polyester, as the third monomer, it is acted as the dyeing modifier of Cation Dyeable Polyester(CDPET). The needed amount is 2% of the amount (mole) of Dimethyl P-phthalate. It has good affinity fuction with cation dyestuff because of the CDP fibre containing sulfo group, the dyed fibre is bright and lustrous, having a complete range of color and dying deeply,The modified fibre has woolens feeling, it is easily blended with fleece and suitable for materials for making garments. It can also be used as the catalyst in organic synthesis, macromolecular synthesis, and fine chemistry.

Dimethyl-5-Sodiosulfoisophthalate