how much ethanol is needed to prepare stock of vitamin D with the concentration of 1 mg/ml , should I use 1 ml ethanol or more?
Try to read this article
http://pubs.acs.org/doi/abs/10.1021/je300401c
Simply Google it you can find this answer:
Vitamin D3: Sigma tests the solublity in ethanol at 50 mg/ml yielding a clear colorless solution.
Dear Dr Ru-Jeng Teng , I want to use vitamin D3 in gel capsule form, so in 50000 IU capsule there is 1.25 mg vitamin D3, so can I use this form for making solution?
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