Magnezyum hidroksit

Detailed information

What it is & how it is made

Magnesium hydroxide is described in the EU specification as an odourless, bulky white powder of at least 95 per cent purity on the anhydrous basis, practically insoluble in water.

Where it is used

It is used as an acidity regulator and colour retention agent. Its main applications are preserving colour in canned vegetables and balancing pH in cheese production.

Health note

JECFA has placed this substance in the “ADI not specified” group, meaning no numerical daily intake limit was considered necessary; in the EU it appears in the Group I list of Regulation 1333/2008 and is used at “quantum satis”, the smallest amount technologically required. No health risk has been reported at normal food use levels.

Halal assessment

This substance is an inorganic mineral compound produced without animal raw materials, so no halal concern has been reported for the additive itself. The product as a whole should still be assessed: carriers or other ingredients in the formulation may be of animal origin.