Food additive databaseyeast foodChecked 2026-10-02
Ammonium Dihydrogen Phosphate (Ammonium Phosphate, Monobasic) リン酸二水素アンモニウム（別名リン酸一アンモニウム）
Designated additiveNot on the EU additive list
- Purpose
- yeast food
- On the label
- “イーストフード（一括名）” (yeast food (group name)), “リン酸アンモニウム” (ammonium phosphate)
- Name in the List of Designated Additives
- リン酸二水素アンモニウム（別名リン酸一アンモニウム） (No. 467)
In Japan
- An ammonium salt of phosphoric acid, used as a nutrient source for yeast in making bread and similar products. No standards for use are set.
- It falls within the group name range of yeast food, and in processed cheese it is also treated as an emulsifier. The simplified name is “リン酸アンモニウム” (ammonium phosphate).
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 not on the EU list of food additives (Regulation (EC) No 1333/2008, Annex II), so it cannot be used as a food additive in the EU.
- Ammonium phosphate is not included among the EU phosphate additives (E338 to E341, E343, E450 to E452)
When it is labeled under a shared name
Ammonium Dihydrogen Phosphate (Ammonium Phosphate, Monobasic) 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
- 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)
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.
This page lists facts stated in laws and in evaluations by public bodies; it is not a safety verdict. Additives used in Japan are approved by the government, which sets the foods and amounts they can be used in. The ADI is a guide to the amount that is considered safe to take every day over a lifetime.