I am trying to make a magnesium supplement with magnesium chloride hexahydrate (MgCL2 . 6H20). The MW of the compound is 203.302 g/mol and the MW of Mg is 24.305 g/mol. So in 203.302 g of the compound there should be 24.305 g of Mg2+, correct?
I want the solution to have a [Mg2+] of 100,000 ppm ( equivalent to Brightwell)
I am trying to make the solution in 5 gallon batches and this is how I am calculating the amount of magnesium chloride to add, but the amount I come up with seems absurdly large. Perhaps someone can find the error in my logic.
(5 Gallons)(3.785 L / 1 Gallon)(100,000 mg Mg2+ / 1 L)(1 g Mg 2+ / 1000 mg Mg2+)(203.302 g Magnesium chloride hexahydrate / 24.305 g Mg2+) = 15,830 g of the magnesium chloride hexahydrate.
15,830 g (1 kg / 1000 g)(2.2 lbs / 1 kg) = 34.83 pounds of magnesium chloride hexahydrate
So I need almost 35 pounds of magnesium chloride hexahydrate to make 5 gallons of a solution that is 100,000 ppm Mg2+? That seems like a very large amount.
Randy, what am I doing wrong?
I want the solution to have a [Mg2+] of 100,000 ppm ( equivalent to Brightwell)
I am trying to make the solution in 5 gallon batches and this is how I am calculating the amount of magnesium chloride to add, but the amount I come up with seems absurdly large. Perhaps someone can find the error in my logic.
(5 Gallons)(3.785 L / 1 Gallon)(100,000 mg Mg2+ / 1 L)(1 g Mg 2+ / 1000 mg Mg2+)(203.302 g Magnesium chloride hexahydrate / 24.305 g Mg2+) = 15,830 g of the magnesium chloride hexahydrate.
15,830 g (1 kg / 1000 g)(2.2 lbs / 1 kg) = 34.83 pounds of magnesium chloride hexahydrate
So I need almost 35 pounds of magnesium chloride hexahydrate to make 5 gallons of a solution that is 100,000 ppm Mg2+? That seems like a very large amount.
Randy, what am I doing wrong?