| http://www.w3.org/ns/prov#value | - The saponification (step f) is generally carried out by means of an alkali metal hydroxide such as sodium hydroxide, potassium hydroxide or lithium hydroxide, in an aqueous medium, at a temperature of between 0 and 20??? C. and preferably between 0 and 10??? C. 1 to 5 molar equivalents of alkali metal hydroxide will be generally used.
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