Bulk: The rate of degradation was variable, ranging from =14% at room temperature in light conditions to ~4% under dark conditions. At 50 °C under light conditions, degradation averaged ~4 %. There was no apparent degradation at 50 ° C in the dark.
Solution: In reagent grade water, the t1/2 was calculated to be ~27.6 hr. In phosphate buffer at pH 7.32, tilt was found to be 91 min. In borate buffer at pH 8.98, tilt was found to be 53.8 hr.