Kinetics of the decomposition and the estimation of the stability of 10% aqueous and non-aqueous hydrogen peroxide solutions
Journal Title: Current Issues in Pharmacy and Medical Sciences - Year 2014, Vol 27, Issue 4
Abstract
In this study, the stability of 10% hydrogen peroxide aqueous and non-aqueous solutions with the addition of 6% (w/w) of urea was evaluated. The solutions were stored at 20°C, 30°C and 40°C, and the decomposition of hydrogen peroxide proceeded according to first-order kinetics. With the addition of the urea in the solutions, the decomposition rate constant increased and the activation energy decreased. The temperature of storage also affected the decomposition of substance, however, 10% hydrogen peroxide solutions prepared in PEG-300, and stabilized with the addition of 6% (w/w) of urea had the best constancy.
Authors and Affiliations
Maria Zuń, Dorota Dwornicka, Katarzyna Wojciechowska, Regina Kasperek, Marzena Rządkowska, Ewa Poleszak
Keywords
Related Articles
- EP ID EP94942
- DOI 10.1515/cipms-2015-0017
- Views 100
- Downloads 0
Temporomandibular joint assessment in patients with articular disc displacement by way of computed tomography - radiological parameters of shape, size and location of mandibular heads
Conventional and modern methods of radiological imaging are often used in the diagnosis of temporomandibular joint disorders, and the CT technique is particularly characterized by an excellent visualization of bony struc...
Principles for magnetic resonance examination in case of the cervical cancer
Magnetic resonance (MR) is the optimal, non-invasive method that allows for precise determination of the degree of cervical cancer progression. It also facilitates the evaluation of tumor volume and structure as well as...
Comparative validation of HPLC, densitometric and videodensitometric determination of lamotrigine in pharmaceutical
Simple, sensitive, precise and accurate HPLC, densitometric and videodensitometric methods for determination of lamotrigine in tablet forms were developed and validated. The HPLC method was carried out using a Symmetry C...
Disorders of purines and pyrimidines metabolism in human gastrointestinal tract cancer
Patients with cancer of stomach, colon cancer and rectum showed an increase in the thymidine kinase, 5'–nucleotidase of adenylate, adenosine deaminase activities and a decrease in the thymidine phosphorylase activity, wh...
Designing primers potentially specific to Entamoeba gingivalis genes
Entamoeba gingivalis normally exists in the human oral cavity, namely in the gums, and brings about some specific diseases. However, it can also trigger some more serious illnesses. Among these are infections of the geni...