Items

Standard

Appearance

White or almost white powder, no odor,freely soluble in water, no observable impurities in normal eyesight

D-Galactose Content

≥99%

Loss on drying

≤1.0%

Residue on ignition

≤0.1%

Specific rotation

+78.0～+81.5

Identification

The RF of the principal spot of the sample solution corresponds to that of Standard solution

Chloride(Count in Cl -)

≤0.005%

Appearance of solution

Solution clarification

Barium

Any opalescence in the sample solution is not more intense than that in the standard solution

Acidity

Consumption of 0.01mol/l sodium hydroxide is not more than 1.5 ml