Food additive databaseleavening agent, emulsifier, nutrient (fortification)Checked 2026-10-02
Calcium Dihydrogen Pyrophosphate (Acid Calcium Pyrophosphate) ピロリン酸二水素カルシウム（別名酸性ピロリン酸カルシウム）
Designated additivePermitted in the EU (E450(vii))EFSA ADI 40mg per kg body weight per day
- Purpose
- leavening agent, emulsifier, nutrient (fortification)
- On the label
- “ピロリン酸カルシウム” (calcium pyrophosphate), “ピロリン酸Ca” (Ca pyrophosphate), “リン酸塩（Ca）” (phosphates (Ca)), “膨張剤” (leavening agent)
- Name in the List of Designated Additives
- ピロリン酸二水素カルシウム（別名酸性ピロリン酸カルシウム） (No. 342)
In Japan
- One of the calcium salts of pyrophosphoric acid (also called acid calcium pyrophosphate). Under the Food Labeling Standards, it is among the additives that can be labeled with the relevant group name when used as a leavening agent (“膨張剤”) or as an emulsifier in processed cheese.
- When used for nutrient fortification, it is within the range (minerals) for which the Food Labeling Standards allow additive labeling to be omitted.
- When written by substance name, the simplified names “ピロリン酸カルシウム” (calcium pyrophosphate) and “ピロリン酸Ca” (Ca pyrophosphate) can be used, and when used together with other phosphates it can be written together as “リン酸塩（Ca、Na）” (phosphates (Ca, Na)).
Japan's standards for use
- Up to 1.0% of the food as calcium (excluding foods bearing special dietary use labeling).
- Only where essential to food manufacturing or processing and for nutritional purposes.
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 E450(vii).
- EFSA’s group ADI for phosphates (40 mg per kg of body weight per day) is expressed as the amount converted to phosphorus.
- 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
Calcium Dihydrogen Pyrophosphate (Acid Calcium Pyrophosphate) may be declared on the label in the same way as “リン酸塩”. See Phosphates 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・類別名一覧、一括名の範囲、栄養強化の範囲ほか） (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.
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.