Magnesium Chloride
Also known as: E511
Magnesium chloride is GRAS as a multi-purpose food additive and mineral source. Magnesium is an essential nutrient with RDA 310-420 mg/day for adults.
What it is
Magnesium chloride (MgCl2); mineral salt.
Firming agent (in tofu coagulation as 'nigari'), acidity regulator, mineral fortificant.
Why it's flagged
- GI laxative effect at high doses
- caution in CKD
What regulators actually say
"Magnesium chloride (MgCl2.6H2O, CAS Reg. No. 7791-18-6)... is generally recognized as safe when used in accordance with good manufacturing practice."
"Magnesium in the aspartate, citrate, lactate, and chloride forms is absorbed more completely... recommended dietary allowances for magnesium range from 310 to 420 mg for adults."
Regulatory status
United States — FDA
GRAS (21 CFR 184.1426).
European Union — EFSA
Approved (E 511); used as firming agent.
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