Peracetic acid
79-21-0 · Acecide · acetic acid oxide · Acetic peroxide · Aceticperoxide · Acetyl hydroperoxide · Acid, Peracetic · Acid, Peroxyacetic · Acid, Peroxyethanoic · Acide peracetique · Acide peroxyacetique · Acido peroxiacetico · AcOOH · BACTERIA ZERO PREMIUM · BLOWHALE DEODORANT SENITIZER · BRN 1098464 · CARE PLUS · Caswell No. 644 · CCRIS 686 · CLEAN WORKS · Cygzyme plus · Desoxon 1 · Desoxone 1 · Desoxone1 · Dr.Vir Germ Peroxyacetic acid Multi-disinfectant · EPA Pesticide Chemical Code 063201 · Estosteril · Ethaneperoxic acid · Ethaneperoxoic acid · HSDB 1106 · Hydroperoxide, acetyl · I6KPI2E1HD · JOYCARE · Kyselina peroxyoctova · LCAP · Monoperacetic acid · Osbon AC · per-acetic acid · Peracetate, Sodium · Peracetate, Zinc · Peracetic Acid · peractic acid · Peraflu D · Perethanoic Acid · Peroxacetic acid · Peroxoacetic acid · Peroxy acetic acid · peroxy-acetic acid · Peroxyacetic acid · peroxyethanoic acid · Proxitane · Proxitane 4002 · PU US LEMON · PU US Phytoncide · PU US PURE · TLCUO LEMON · TLCUO Phytoncide · TLCUO PURE · UNICARE · WECLEAN C2 TLCUOCAS 79-21-0
Listed as an acidity regulator and a starch-modifying agent by the US and Canada.
Listed as acidity regulators (US) · starch-modifying agents (CA)
- United States: pH control agent — FDA, Substances Added to Food: PERACETIC ACID
- Canada: Starch-modifying agent — Health Canada, List of Permitted Starch-Modifying Agents (List 13)

A strong oxidising antimicrobial used to sanitise produce, process water and equipment. It breaks down to acetic acid and water, which is why it is favoured for washing food.
Where it is and isn’t permitted
| Jurisdiction | Status | Scope and limits | Citation |
|---|---|---|---|
| Australia and New Zealand | No listed food uses foundThis site has not matched this substance to any food use on this jurisdiction’s list of authorised food additives. A food additive may be used only in foods that list names. Flavourings, enzymes, processing aids and added nutrients are regulated separately and do not appear on it. | ||
| Canada | Permitted | no numerical limit (good manufacturing practice) In: Starch used in the manufacture of modified starch. Purpose: Starch-modifying agent. Limit: Good Manufacturing Practice. | Health Canada, List of Permitted Starch-Modifying Agents (List 13), item P.1retrieved 2026-10-17 |
| European Union | No listed food uses foundThis site has not matched this substance to any food use on this jurisdiction’s list of authorised food additives. A food additive may be used only in foods that list names. Flavourings, enzymes, processing aids and added nutrients are regulated separately and do not appear on it. | ||
| Great Britain | No listed food uses foundThis site has not matched this substance to any food use on this jurisdiction’s list of authorised food additives. A food additive may be used only in foods that list names. Flavourings, enzymes, processing aids and added nutrients are regulated separately and do not appear on it. | ||
| Japan | Permitted, with conditions | Designated additive: Appended Table 1, item 98, 過酢酸 (“Peracetic Acid” in the unofficial English translation). …Designated additive: Appended Table 1, item 98, 過酢酸 (“Peracetic Acid” in the unofficial English translation). Standards for use — Specifications and Standards for Foods, Food Additives, etc. (MHW Notification No. 370 of 1959), Part II (Food Additives), F (Standards for use), entry 過酢酸: (1) [must not be used in the foods stated] “過酢酸は、過酢酸製剤として使用する場合以外に使用してはならない。” The Japanese is the standard as published. There is no official English translation of the Notification; the English in square brackets is this site’s description of what each sentence does, not a translation of the foods or the levels. Compositional specifications for this additive, in the same Notification, are not imported and are not shown here; nor are the general rules in F 添加物一般, which apply to every additive. | Regulations for Enforcement of the Food Sanitation Act (MHW Ordinance No. 23 of 1948), Appended Table 1retrieved 2026-10-18 |
| South Korea | Permitted, with conditions | Designated food additive: Standards and Specifications for Food Additives, Part III, 2. …Designated food additive: Standards and Specifications for Food Additives, Part III, 2. 가공보조제 (processing aids), 과산화초산 (“Peroxyacetic Acid”, the English the Code prints beside it). Main use (주용도) of 과산화초산: 살균제. Standard for use (사용기준) of 과산화초산: (1) “과산화초산은 아래의 식품에 한하여 살균의 목적에 한하여 사용하여야 하며, 최종식품의 완성 전에 식품 표면으로부터 침지액 또는 분무액을 털어내거나 흘려내리도록 하여야 한다. 과산화초산의 사용량(농도)은 과산화초산 및 1-하이드록시에틸리덴-1,1-디포스포닌산(HEDP)으로서 아래의 기준 이하로 사용하여야 한다.” (2) “성분 : 과일· 채소류 : 식육” (3) “과산화초산 : 0.080 g/kg : 포유류 1.8g/kg 가금류 2.0g/kg” (4) “HEDP : 0.0048 g/kg : 포유류 0.024g/kg 가금류 0.136g/kg” The Korean is the standard as published. There is no official English translation of the current Code (the English version on MFDS’s website is the 2020 edition and has no legal effect); the English in square brackets is this site’s description of what each sentence does, not a translation of the foods or the levels. Compositional specifications (Part IV) are not imported, nor are the general standards in Part II, which apply to every additive. | Standards and Specifications for Food Additives (식품첨가물의 기준 및 규격), MFDS Notification, Part III (Standards for use, by item)retrieved 2026-10-18 |
| United States | Permitted, with conditions | Named in 21 CFR 173.315(a)(5) among the substances that may be used to wash, or to assist in the peeling of, fruits and vegetables: for fruits and vegetables that are not raw agric …Named in 21 CFR 173.315(a)(5) among the substances that may be used to wash, or to assist in the peeling of, fruits and vegetables: for fruits and vegetables that are not raw agricultural commodities, prepared by reacting acetic acid with hydrogen peroxide and not to exceed 80 ppm in wash water. The section is held on this site as the page chemicals-used-in-washing-or-to-assist-in-the-peeling-of-fruits-and-vegetables; read it for the conditions. | 21 CFR 173.315retrieved 2026-10-18 |
| Codex Alimentarius | Not listedDoes not appear on this jurisdiction’s permitted list. That is not the same as being prohibited. |
How much is permitted
A listing usually limits the quantity as well as the food. Only one of the forms that takes is a figure: quantum satis and good manufacturing practice permit the amount the technological effect requires and no more, which is a limit rather than the absence of one. Figures below are the range across every food category this page is listed in, and categories differ between regulators — see how much is permitted.
| Canada | — | 1 GMP |
|---|---|---|
| Japan | — | 1 no quantity stated |
| South Korea | — | 1 no quantity stated |
| United States | — | 1 no quantity stated |
No regulator sets a figure for Peracetic acid. That is not an absence of control: where the listing says quantum satis or good manufacturing practice, the quantity is limited to what the effect requires.
What it is made from
Made by reacting acetic acid with hydrogen peroxide; the commercial product is an equilibrium mixture of the two with the peracid.
- Vegan
- Vegetarian
Compare other additives on the dietary indexes.
- CAS registry number
- 79-21-0
- InChIKey
- KFSLWBXXFJQRDL-UHFFFAOYSA-N
- PubChem
- CID 6585
Every name it appears under
60 recorded names. A label may use any of them.
CAS registry number
- 79-21-0
Other names
- Acecide
- acetic acid oxide
- Acetic peroxide
- Aceticperoxide
- Acetyl hydroperoxide
- Acid, Peracetic
- Acid, Peroxyacetic
- Acid, Peroxyethanoic
- Acide peracetique
- Acide peroxyacetique
- Acido peroxiacetico
- AcOOH
- BACTERIA ZERO PREMIUM
- BLOWHALE DEODORANT SENITIZER
- BRN 1098464
- CARE PLUS
- Caswell No. 644
- CCRIS 686
- CLEAN WORKS
- Cygzyme plus
- Desoxon 1
- Desoxone 1
- Desoxone1
- Dr.Vir Germ Peroxyacetic acid Multi-disinfectant
- EPA Pesticide Chemical Code 063201
- Estosteril
- Ethaneperoxic acid
- Ethaneperoxoic acid
- HSDB 1106
- Hydroperoxide, acetyl
- I6KPI2E1HD
- JOYCARE
- Kyselina peroxyoctova
- LCAP
- Monoperacetic acid
- Osbon AC
- per-acetic acid
- Peracetate, Sodium
- Peracetate, Zinc
- Peracetic Acid
- peractic acid
- Peraflu D
- Perethanoic Acid
- Peroxacetic acid
- Peroxoacetic acid
- Peroxy acetic acid
- peroxy-acetic acid
- Peroxyacetic acid
- peroxyethanoic acid
- Proxitane
- Proxitane 4002
- PU US LEMON
- PU US Phytoncide
- PU US PURE
- TLCUO LEMON
- TLCUO Phytoncide
- TLCUO PURE
- UNICARE
- WECLEAN C2 TLCUO
Hazard reference values
No reference value for this substance in the sources we hold.
Evidence and how bodies read it
Studies, and the differing conclusions regulators drew from them, are curated rather than machine-read, and none has been written for this substance yet.
Common questions
Assembled from what is above, in the words the questions are usually asked in. Each answer is the same statement the relevant section makes, with the same citations behind it.
- What is Peracetic acid?
- A strong oxidising antimicrobial used to sanitise produce, process water and equipment. It breaks down to acetic acid and water, which is why it is favoured for washing food.
- What is Peracetic acid used for in food?
- It is listed as an acidity regulator and a starch-modifying agent — the role the US and Canada assign it. This page shows every function each regulator records, with the citation for each.
- Is Peracetic acid banned in Europe?
- No. Peracetic acid does not appear on the EU's list of authorised food additives, which is not the same as being banned: the EU permits an additive only where it has authorised it, and usually the reason for an absence is that no one applied. The EU has made no finding against this substance. It does mean it may not be used as a food additive in the EU today.
- Where is Peracetic acid permitted?
- Of the seven regulators this site reads, Canada, Japan, South Korea and the US permit it. Each permission is for named foods at named levels, not a blanket one; the table on this page gives them with citations.
- Is Peracetic acid vegan?
- Yes. Peracetic acid is not derived from animals, and is suitable for vegetarians. This page says what it is made from and how.
Sources for this page
- ca retrieved 2026-10-17
- jp retrieved 2026-10-18
- kr retrieved 2026-10-18
- us-listings retrieved 2026-10-18
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