(1) this product in water solution water decomposition, generating
glucose slowly, so that the original feel acid sweetness, later a
slightly acid. This product 1g is soluble in water, soluble in 1.7
mL *0mL ethanol, almost insoluble in ether. (2) this product
solution at room temperature, water after about put 2h *5 ~ *0% of
forming decomposition glucose sour and *0 to *5 percent of lactone
mixture solution. This product solution (***0) the pH value is
modulated 3.2, 2h pH value into 2.3 within. (3) the color of a
glucose sour iron. (4) made with benzene hydrazine reaction of
glucose sour hydrazine crystallization, can according to identify
the melting point of crystallization hydrazine time too long,
benzene, occurred Browning, so use the distillation colorless
content, the crystallization of colorless. (5) this product
solution is not stable, began adding water rapid decomposition,
then the process slow, into the delta - D - lactone, gamma - D -
lactone, D - glucose sour mixture balance solution.
