Food additive databaseleavening agent, kansui, emulsifierChecked 2026-10-02
Potassium Pyrophosphate (Tetrapotassium Pyrophosphate) ピロリン酸四カリウム（別名ピロリン酸カリウム）
Designated additivePermitted in the EU (E450(v))EFSA ADI 40mg per kg body weight per day
- Purpose
- leavening agent, kansui, emulsifier
- On the label
- “ピロリン酸K” (potassium pyrophosphate), “リン酸塩（K）” (phosphates (K)), “リン酸塩（Na，K）” (phosphates (Na, K)), “膨脹剤” (leavening agent), “かんすい” (kansui, alkaline noodle agent), “乳化剤” (emulsifier)
- Name in the List of Designated Additives
- ピロリン酸四カリウム（別名ピロリン酸カリウム） (No. 341)
In Japan
- One of the phosphates. It falls within the group names for leavening agents, kansui (alkaline noodle agent) and emulsifiers (when used in processed cheese).
- When used together with other phosphates, they can be written together, as in “リン酸塩（Na，K）” (phosphates (Na, K)). The short name is “ピロリン酸K” (potassium pyrophosphate).
- There are no standards for use.
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 E450(v).
- 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
Potassium Pyrophosphate (Tetrapotassium 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・用途名併記・一括名・栄養強化の範囲、既存添加物名簿収載品目リスト） (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.