SciELO - Scientific Electronic Library Online

vol.86 issue1Search for biomarkers for the discrimination of the “Chilliwa” and “Ramis” varieties of kañiwa trough non-targeted metabolomicsDetermination of Morin in green tea and coffee by adsorption voltammetry using carbon electrodes modified with poly (3,4-ethylenedioxythiophene) and ionic liquid author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




  • Have no cited articlesCited by SciELO

Related links

  • Have no similar articlesSimilars in SciELO


Revista de la Sociedad Química del Perú

Print version ISSN 1810-634X


RODRIGUEZ LLEGADO, Agustín A.  and  CJUNO H., Jesús A.. Determination of the concentration of chitosan in powder by capillary viscosimetry. Rev. Soc. Quím. Perú [online]. 2020, vol.86, n.1, pp.24-33. ISSN 1810-634X.

The objective of this work has been to develop a procedure for the determination of the concentration of chitosan in powder samples, by capillary viscosimetry of Ostwald (capillary of 0.55 ± 0.02 mm internal diameter). Standard chitosan solutions between 461 mg/liter up to 9138 mg/liter and pH 1.24 were prepared for all cases. Tests were also carried out at temperatures between 20° to 50°C, observing linearity with the concentration until before 9138 mg/liter. The most important dependence was the relative viscosity (ηr) versus the concentration (concordant with the Poiseuille equation) which in the range 461 mg/liter to 2808 mg/liter gave a linear dependence with r2= 0.995, enabling the analysis of samples for the content of chitosan with consistent results and comparable with the referentials.

Keywords : chitosan; viscosity; pH; concentration.

        · abstract in Spanish     · text in Spanish     · Spanish ( pdf )