Magnesium citrate

Magnesium citrate (CAS 7779-25-1), also known as trimagnesium dicitrate and listed as E345 in food applications, is the magnesium salt of citric acid used in food, pharmaceutical, and personal care manufacturing.

Where is Magnesium citrate used?

• Dietary supplements and functional foods: bioavailable magnesium source with high elemental content
• Pharmaceuticals: active ingredient in laxative preparations and buffering agent in tablets and powders
• Food: acidity regulator and sequestrant that stabilizes color
• Personal care: pH adjuster and chelating agent in rinse-off and leave-on products
• It functions as a pH buffer, sequestrant, and bioavailable magnesium source in finished formulations.

Good to know: Standard grades include food-grade (FCC), USP, and Ph. Eur., each with distinct purity and heavy metal specifications relevant to end-use compliance. Anhydrous and hydrated forms are both commercially available, and selection typically depends on regulatory requirements.

Commercial specifications

• Food-grade (FCC), USP, and Ph. Eur. grades
• Distinct purity and heavy metal specifications per grade
• Anhydrous and hydrated forms commercially available