I recently found a source of Fumaric acid that is >99.5% pure, but not food grade. I could also not find the MSDS. I was wondering what those .5% impurities could be and if it would be safe to use for FASA method.
What is 0.5% of 61.8 mg?
Is there any likely impurity that will be toxic at that level?
How much will you be dosing, how often and for how long?
What cumulative poisons are likely to present a problem within your planned dosing regimen?
What about everything else that you eat, drink and breathe?
Hopefully these questions will help you determine a perspective in making a decision about your fumaric acid. It's likely that a good part of that 0.5% (max) is adsorbed water.
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