Glucose
Specific optical rotation (2.2.7).
Dissolve 10.0 g in 80 ml of water R, add 0.2 ml of dilute ammonia R1, allow to stand for 30 min and dilute to 100.0 ml with water R. The specific optical rotation is + 52.5� to + 53.3�, calculated with reference to the anhydrous substance.
Fructose
Specific optical rotation (2.2.7).
Dissolve 10.0 g in 80 ml of water R, heating to 50 �C. Allow to cool and add 0.2 ml of dilute ammonia R1. Allow to stand for 30 min and dilute to 100.0 ml with water R. The specific optical rotation is -91.0� to -93.5�, calculated with reference to the anhydrous substance.
2 juli 1999