05 septembre 2014

Sodium P-Toluenesulfonate

CharactersWhite flaky crystals, generally dihydrate crystals , soluble in water (20 ℃ when 67g, 80 ℃ when 260g), soluble in methanol , slightly soluble in most organic solvents . 20g / L solution of pH = 8-10. Melting point > 300 ℃, flash point > 500 ℃. Generally consists of toluene as raw material, sulfonated , get p-toluenesulfonic acid , and then the system Ionic and crude, bleaching, concentrated and crystallized from experience finished ; also by hydrolysis of p-toluenesulfonyl chloride ( hydrolysis temperature must be... [Lire la suite]
Posté par kimmlife à 05:32 - Commentaires [0] - Permalien [#]

05 septembre 2014

Application of surfactants in textile printing and dyeing

A common classification of surfactants is based on the surfactant dissolved in the case of the charge carried by the water , divided into ionic and non-ionic two categories, while ionic surfactants may also be further divided into cationic, anionic, amphoteric three categories , as follows:A surfactant can significantly lower the surface tension of water to reduce the level within a certain concentration range , the surfactant concentration dependent , when the concentration reaches a certain value , the surface tension of the... [Lire la suite]
Posté par kimmlife à 05:18 - Commentaires [0] - Permalien [#]