Food additive databasekansui, seasoning, emulsifierChecked 2026-10-02
Trisodium Phosphate (Sodium Phosphate, Tribasic) リン酸三ナトリウム（別名第三リン酸ナトリウム）
Designated additivePermitted in the EU (E339)EFSA ADI 40mg per kg body weight per day
- Purpose
- kansui, seasoning, emulsifier
- On the label
- “かんすい” (kansui), “調味料（無機塩）” (seasoning (inorganic salts)), “リン酸ナトリウム” (sodium phosphate), “リン酸Na” (sodium phosphate), “リン酸（Na）” (phosphoric acid (Na)), “リン酸塩（Na，K）” (phosphates (Na, K))
- Name in the List of Designated Additives
- リン酸三ナトリウム（別名第三リン酸ナトリウム） (No. 475)
In Japan
- The name on the official list is “リン酸三ナトリウム（別名第三リン酸ナトリウム）” (trisodium phosphate (also known as tribasic sodium phosphate)). It falls within the range of the group names “かんすい” (kansui) and “調味料（無機塩）” (seasoning (inorganic salts)), and in processed cheese products it can also be labeled with the group name “乳化剤” (emulsifier).
- When written by substance name, the simplified names “リン酸ナトリウム” and “リン酸Na” can be used. When used together with phosphoric acid it can be grouped as “リン酸（Na）”, and when used together with tetrapotassium pyrophosphate as “リン酸塩（Na，K）”. 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 E339.
- 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
Trisodium Phosphate (Sodium Phosphate, Tribasic) 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・ばら売りの表示） (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.