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Product name	Dimethyl-5-Sodiosulfoisophthalate(SIPM, DMSIP Na Salt)
CAS NO.	3965-55-7
EINECS	223-578-8
Molecular formula	C₁₀H₉O₇SNa
Molecular structure
Molecular Weight	296.23
Specifications	Appearance: white powder Assay: 99% min Ester Value: 375-381mg(KOH)/g Acid Value: 0.3mg(KOH)/g max Sodium Sulphate: 100ppm max Iron: 4ppm max Moisture: 0.3% max.
Properties and Usage	Taking the form of white powder and soluble in water and ethanol. Usually the dyeability of greige polyester fibre is unsatisfactory as it can be dyed only in a few colours and dyeing costs are high. However, if SIPM is used as the third monomer to make cationic dyeable PET chip (CDPET chip), the dyeability of the CDPET yarn or fabric to be produced thereby will be greatly improved and dyeing results will be extreme satisfactory with a wide variety of colours able to be imparted. Furthermore the dyeing costs can be reduced a lot as CDPET yarn or fabric can be easily dyed even in boiling water. This product is mainly used as the dyeing modifier of Cation Dyeable Polyester(CDPET). The needed amount is 2% of the amount (mole) of Dimethyl P-phthalate. It could also be used in Water Soluble Polyester,Sea and Island Polyester Fibre as well as the catalyst in organic synthesis, macromolecular synthesis, and fine chemistry.
Capacity	6000mt/a
Standard packing	25 kgs /bag, or 500kgs/sack

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