4.2.1.110 additional information - the reaction medium acidifies by itself due to unknown events related to the AUDH catalysed reaction 4.2.1.110 5 - at a pH lower than 5.0, the reaction rate is slower and there is a tendency for increased formation of degradation products (FHMK), at a pH higher than 5.5, there is a tendency for more APT dihydrate formation 4.2.1.110 5.8 - formation of 1,5-anhydro-4-deoxy-D-glycero-hex-3-en-2-ulose 4.2.1.110 6.8 - formation of microthecin 4.2.1.110 7.5 - -