- Category :
Catalyst and Auxiliary
- CAS NO : 3965-55-7
- EC NO : 223-578-8
- Molecular Formula : C10H9O7S
- Main Specifications :
- Synonyms : Sodium Dimethyl m-Phthalate 5-Sulphonate;5-Sulfoisophthalic Acid Dimethyl Ester Sodium Salt;sodium 3,5-bis(methoxycarbonyl)benzenesulfonate;Dimethyl 5-sulfoisophthalate sodium salt;sodium dimethyl 5-sulphonatoisophthalate;3,5-bis(methoxycarbonyl)benzenesulfonate;Dimethyl-5-sulfoisophthalate sodium salt;
Package: Complex package with inner brown paper, 25 kg/ pack and 500 kg/ pack, or can be packaged upon request.
Uses : The product is a white powder , soluble in water and alcohol. As the most used dyeing property modifier of polyesters, it is mainly used to improve the dyeing properties of polyesters, but can also be used as the intermediate in the synthesis of organic a
Molecular Structure:

Product description:
The product is a white powder , soluble in water and alcohol. As the most used dyeing property modifier of polyesters, it is mainly used to improve the dyeing properties of polyesters, but can also be used as the intermediate in the synthesis of organic agents, large molecules and find chemicals.
Specifications:
Specification High Quality First Grade
Appearance white powder without visible impurities
Acid Value (mgKOH/g) ≤0.3 ≤O.5
Saponification Value (mgKOH/g) 378± 2 378±3
Sulfate ion (ppm) ≤100 ≤150
Water ( wt% ) ≤O.3 ≤0.4
Ferrum (ppm) ≤4 ≤5
Absorbance (ABS) ≤O.05 ≤0.08
Chloride ion (ppm) ≤8 ≤10
Package: Complex package with inner brown paper, 25 kg/ pack and 500 kg/ pack, or can be packaged upon request.