Hip
Senior Member
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I'd have to calculate it using molecular weight to wor out what percentage of mag chloride is actually magnesium... I don't remember how to do that, it's 8 years since I did my GCSE Chemistry lol.
You can use an online molecular weight calculator like this one, which will tell you that:
MgCl2 magnesium chloride — Mg content = 26% of mass
MgSO4 magnesium sulphate — Mg content = 20% of mass
You can look up solubility figures, but I've found that in 750 ml of water, you get around 500 grams of magnesium sulphate (two mugfuls) dissolving. Magnesium chloride is also very soluble in water, so I think you'd get at least that amount dissolving as well.
Some people find magnesium chloride is itchy on the skin though, which is why magnesium sulphate can be better.
Are you sure you its not just sulphite (used as a preservative) you are intolerant to, rather than sulphur or sulphate? Sulphur is an essential mineral, and sulphate is used by the liver for detoxification purposes.