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Dimethyl-5-Sulfoisophthalate Sodium Salt (SIPM)

Introduction

Addtime: 2018-1-20

               Dimethyl-5-Sulfoisophthalate Sodium Salt(SIPM)

 

1.     Chemical Identity

Product Name:  Dimethyl-5-Sulfoisophthalate Sodium Salt(SIPM)

CAS number:    3965-55-7

EC number:       223-578-8

Molecular formula:   C10H9O7SNa

Molecular weight:     296.23

 
Structure:

 


 

2.      General introduction

SIPM is widely used as the third monomer of cationic dyeable polyester (CDP), while CDP is a kind of modified Dacron. Dacron, chemical name polyethylene terephthalate (PET), is a kind of polyester fiber. Dacron fabrics are very popular in the market because of they are beautiful and easy to wash and dry. However, non-modified Dacron is difficult to dye because of its high crystallization, high orientability and non polar group.

CDP as a kind of modified Dacron is produced by introducing a third monomer SIPM. Since there is sulfonic group in CDP, it has good affinity performance to cationic dyes. So it’s more easily to dye and the dyed fibers have a bright and lasting color. CDP is easy for wool blend, so it is suitable for winter men and women clothing fabrics.

 

Properties of SIPM:

l  Good affinity performance to cationic dyes

l  Super dyeability

 

3.     Supply specification

Property

Specification

Appearance

White powder without impurity

Color (16% EG) Pt-Co

 20

Acid Value (mg KOH/g)

  0.6

Saponification Value (mg KOH/g)

376-380

Sulfate ppm

  100

Volatile Matter, %

  0.3

Absorbance

 0.05

Fe ppm

  4

Cl-ppm

  15

 

4.     Packing, transportation and storage

25    Kg net in paper-plastic bag; Available in Supersack.

This material is non- dangerous goods for land, air and marine transportation.

They should be kept away from flames or other sources of heat. They should be stored in cool and ventilated area.

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