Food additive databaseantioxidantChecked 2026-10-02

Isopropyl Citrate クエン酸イソプロピル

Designated additiveNot on the EU additive list

Purpose: antioxidant
On the label: “酸化防止剤（クエン酸イソプロピル）” (antioxidant (isopropyl citrate)), “酸化防止剤（クエン酸エステル）” (antioxidant (citric acid ester))
Name in the List of Designated Additives: クエン酸イソプロピル (No. 114)

In Japan

A designated additive used to prevent oxidation. Under the standards for use, the foods in which it may be used are limited to fats and oils and butter.
Antioxidant is a purpose that must be labeled together with the purpose name, so it is written as “酸化防止剤（クエン酸イソプロピル）” (antioxidant (isopropyl citrate)). The abbreviated name is “クエン酸エステル” (citric acid ester).

Japan's standards for use

Fats and oils, and butter: up to 0.10 g/kg as monoisopropyl citrate

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.

Sources

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.

Other substances used as antioxidant

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