Food additive databasepreservativeChecked 2026-10-02
Isobutyl p-Hydroxybenzoate パラオキシ安息香酸イソブチル（別名パラヒドロキシ安息香酸イソブチル）
Designated additiveNot on the EU additive list
- Purpose
- preservative
- On the label
- “保存料（パラオキシ安息香酸イソブチル）” (preservative (isobutyl p-hydroxybenzoate)), “保存料（パラオキシ安息香酸）” (preservative (p-hydroxybenzoic acid)), “保存料（イソブチルパラベン）” (preservative (isobutylparaben))
- Name in the List of Designated Additives
- パラオキシ安息香酸イソブチル（別名パラヒドロキシ安息香酸イソブチル） (No. 307)
In Japan
- One of the p-hydroxybenzoate esters (parabens), used as a preservative.
- The standards for use are expressed as p-hydroxybenzoic acid. They set the foods in which it may be used and the upper limits: soy sauce, fruit sauces, vinegar, soft drinks, syrups, and the skins of fruits and fruit vegetables.
- Preservatives must be labeled together with the purpose name. The abbreviated names are “パラオキシ安息香酸” (p-hydroxybenzoic acid) and “イソブチルパラベン” (isobutylparaben).
Japan's standards for use
- As p-hydroxybenzoic acid: soy sauce 0.25 g/L
- Fruit sauces 0.20 g/kg
- Vinegar 0.10 g/L
- Soft drinks and syrups 0.10 g/kg
- Skins of fruits and fruit vegetables 0.012 g/kg
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.
- The only parabens authorized as food additives in the EU are ethyl p-hydroxybenzoate (E214), methyl p-hydroxybenzoate (E218), and their sodium salts (E215 and E219).
When it is labeled under a shared name
Isobutyl p-Hydroxybenzoate may be declared on the label in the same way as “パラオキシ安息香酸エステル類（パラベン）”. See Parabens (preservative) 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・類別名一覧、一括名の範囲、栄養強化の範囲ほか） (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.