Magnesium Monohydrogen Phosphate リン酸一水素マグネシウム

In Japan

• One of the magnesium salts of phosphoric acid. No standards for use have been set.
• It falls within the scope of the group name “イーストフード” (yeast food), and if used for that purpose it can be written as “イーストフード” (yeast food). The short names when written by substance name are “リン酸マグネシウム” (magnesium phosphate) and “リン酸Mg” (Mg phosphate).
• It is also within the scope of additives that may be used for nutritional fortification, and when used for that purpose, labeling is exempt.

Japan's standards for use

There are no standards for use that limit which foods or how much (the general standards for all additives still apply).

This is a summary of the standards for use. See the source list for the exact conditions.

In the EU

• It is on the EU list of food additives (Regulation (EC) No 1333/2008, Annex II) as E343(ii).
• In its 2019 evaluation, EFSA (the European Food Safety Authority) set an ADI (acceptable daily intake) of 40mg per kg of body weight per day (a group ADI, for the total of related substances) (EFSA FAF).

When it is labeled under a shared name

Magnesium Monohydrogen Phosphate may be declared on the label in the same way as “イーストフード”. See Yeast food (dough conditioner) for details.

Sources

• List of Designated Additives — Japan Food Chemical Research Foundation (Japanese)
• Standards for use and storage of each additive — Japan Food Chemical Research Foundation (Japanese)
• EU food additive database (Japanese translation) — MAFF (Japanese)
• Regulation (EC) No 1333/2008 on food additives — EUR-Lex
• EFSA OpenFoodTox (chemical hazards database)
• 消費者庁「食品表示基準について」別添 添加物関係（簡略名・用途名併記・一括名・栄養強化の範囲） (Japanese)
• EFSA FAF Panel (2019) Re-evaluation of phosphoric acid–phosphates – di-, tri- and polyphosphates (E 338–341, E 343, E 450–452) as food additives (Japanese)

Checked 2026-10-02. Rules and evaluations change over time. This page is a translation of our Japanese page; if they differ, the Japanese page is the reference.