The amount of water (number of hydrates) present in this product is not determined, however, it can be determined based on the amount of Gallium present.
Below is a formula shown in the image below, a calculation can be performed knowing the amount of metal (indicated i in the lost specific Certificate of Analysis):
For example:
% Gallium - 18.1% // amount of water is x = 7
Calculation: x = [(100 x 69.72 x 1) - (18.1 x 255.74)] / (18.1 * 18.01) = (6972 - 4628.89) / (325.98) = 7.19 = 7