Aqueous solutions of methylparaben and propyl paraben at pH 3 to 6 may be sterilized by moist heat sterilization without decomposition. Aqueous solutions at pH 3 to 6 are stable (less than 10% decomposition) for up to about 4 years at room temperature, while aqueous solutions at pH 8 and above undergoes rapid hydrolysis.Aqueous solutions of methylparaben and propyl paraben at pH 3 to 6 may be sterilized by moist heat sterilization without decomposition. Aqueous solutions at pH 3 to 6 are stable (less than 10% decomposition) for up to about 4 years at room temperature, while aqueous solutions at pH 8 and above undergoes rapid
