Pharma & nutraceuticals
Mineral salt for supplements.
Ingredients / Acidulants & pH control / Magnesium Citrate
Acidulants & pH control
Magnesium Citrate (E 345(i))
Magnesium citrate for U.S. manufacturers, from vetted producers. FCC / USP grade on request. Download the sample spec sheet, then send us your grade and quantity.
TRACED · CERTIFIED · RELIABLE · TRANSPARENT · TESTED
Key facts
| CAS No. | 7779-25-1 |
|---|---|
| E-number (EU) | E 345(i) |
| Synonyms | Magnesium citrate, trimagnesium citrate |
| Chemical formula | (C6H5O7)2 Mg3 |
| Molecular weight | 451,12 (anhydrous) |
| Description | White or almost white, fine, slightly hygroscopic powder |
| Grades | EU Reg. 231/2012 (E 345(i)) sample spec · FCC / USP available on request for U.S. food/pharma use |
| Origin | Confirmed in every offer; stated per lot on the COA |
| Storage, shelf life, packaging | Per the producer's specification, on request |
What magnesium citrate is
Formula (C6H5O7)2 Mg3, molecular weight 451,12 (anhydrous). White or almost white, fine, slightly hygroscopic powder. (Source: EU Regulation 231/2012, E 345(i).)
Applications by industry
Food & beverage
Acidity regulator.
Sample specification
Values from EU Regulation 231/2012 (E 345(i)), consolidated text of 18.08.2026. Actual values depend on the producer; the producer's specification and the COA for your lot are available on request.
| Assay | 15,0-16,5 % Mg on dry substance/matter equal to 92,8-102,1 % trimagnesium dicitrate anhydrous |
|---|---|
| Loss on drying | Maximum 3,5 %, determined on 1 000 g by drying in an oven at 180 ± 10 °C for 5 h |
| Oxalic/oxalate | ≤ 280 mg/kg (0,028 %) as oxalic acid |
| Sulfates | ≤ 2 000 mg/kg (0,2 %) |
| Calcium | ≤ 2 000 mg/kg (0,2 %) |
| Iron | ≤ 100 mg/kg |
| Mercury | ≤ 0,1 mg/kg |
| Lead | ≤ 1 mg/kg |
| Cadmium | ≤ 0,1 mg/kg |
| Arsenic | ≤ 1 mg/kg |
| Not identified material | No process or product related impurities. The unintended presence of hydrated forms of trimagnesium dicitrate such as the nonahydrate cannot be excluded. |
Download the full spec sheet (PDF)
Documents and sourcing
Droplet promise. Origin confirmed in every offer. Sample lot record on request, from the producer. SDS, allergen and other statements on request. We work with vetted producers and give you access to U.S.- and EU-stocked material through our partner network.
Data sheet, SDS and COA on request. Every delivery ships with a COA linked to the delivered lot.
Questions buyers ask
What is magnesium citrate used for?
Typical uses by industry. Pharma & nutraceuticals: Mineral salt for supplements. Food & beverage: Acidity regulator. Suitability for your product and market is confirmed with the producer's specification.
Which grades can McBoeck supply?
Food grade to EU Regulation 231/2012 (E 345(i)). FCC / USP grade is available on request for U.S. food and pharma use. Particle size and other grade details follow the producer's specification, on request.
Which documents come with magnesium citrate?
Every delivery ships with a COA linked to the delivered lot. Origin confirmed in every offer. Sample lot record on request, from the producer. SDS, allergen and other statements on request.
What does the sample spec sheet show?
Limits for assay, loss on drying, oxalic/oxalate, sulfates, calcium, iron, mercury, lead, cadmium, arsenic and not identified material, taken from EU Regulation 231/2012. Actual values depend on the producer; the producer's specification and the lot COA are available on request.
How do I get a quote?
Send us the grade, quantity and delivery location through the quote form or at [email protected]. We work with vetted producers and give you access to U.S.- and EU-stocked material through our partner network.
Related acidulants & pH control
Acetic AcidCalcium CitrateCalcium GluconateCitric Acid, AnhydrousAll acidulants & pH control
Need magnesium citrate?
Send us the grade, quantity and delivery location. Email [email protected] or call +1 (713) 766-6811.