T. The present invention; oacute; n refers to a carbohydrates of gitosano, its potential is ZTA, measured at pH 7.5, less than or equal to - 20 mV, including its composition, manufacturing process and various applications, especially in the field of Rheumatology and ampould; Iacute; a, oftalmolog amp; Iacute; Iacute; a, oftalmololog amp; Iacute; Iacute; a, oftalmolog amp; Iacute; A,Medicina Est Amp;Eacute;Tica,Cirug Amp;IACUTE;A PL AMP;AACUTE;ISCA,Cirug AMP;IACUTE;A Internal,Dermatolog AMP;IACUTE;A O COSM AMP;EACUTE;TICA. LT;/P GT;<;p>;La presente invenció;n se refiere a un carboxialquilo de quitosano que tiene un potencial zeta, medido a pH 7,5, que es menor o igual a -20 mV, composiciones que comprenden el mismo, un proceso para fabricarlo y diversas aplicaciones del mismo, en particular en el campo de terapia, reumatologí;a, oftalmologí;a, medicina esté;tica, cirugí;a plá;stica, cirugí;a interna, dermatologí;a o cosmé;tica.<;/p>;