The CAS number of the nitrate is not the same as above (10045-94-0) plz check it
Generally there is no specific amount of mercury salt to use, whether you use a knife tip or 1g of mercury salt, it only affects the speed of the amalgam process in relation to the amount of aluminum and the quality of the amalgam. But don't use too much, because that would be a waste, find an amount that fits your needs and start with small amounts (50-100mg) and then slowly increase the amount from synthesis to synthesis, you will see what I mean. The amalgam process is an important part of the synthesis, look at how the reaction looks and feels. It should be a dark gray solution with many bubbles. .