Assertion: tartaric acid | /r/CapableOf | produce a reaction mixture
Facets:
Source sentences:
text: The general rule is that an upper limit of 1 mol of acetic anhydride is used for each alcohol hydroxyl group in the tartaric acid or citric acid plus an additional mol of acetic anhydride for each two carboxyl groups present in said tartaric acid or citric acid, less such an amount of said acetic anhydride as will produce a reaction 'mixture having a melting point at least 15, and better still at least 20 to 25,