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Abstract
A study of the stability of sodium oxaciline in water means by using spectrophotometries techniques has been done. The maximun of absorcion that present the mercapt form of oxaciline appears at wave lenght of 344 nm. The fulfilment of the Lamber-Beer law has been proved between the concentrations of 1'13·10-5 M and 1'36·10-4 M (E 344 = 4859'62 mol-1 · 1cm-1). This peniciline is broken down following a cinetic of degradation of rate one. At higher temperature its degradation speed is increased. It has been proved that it is more stable in pH nearer to neutrality and in hidroalcoholic (etyl alcohol and propyl alcohol) means, being more stable the highest is the concentration of alcohol in the means.
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