ISOBUTYL BENZOATE
Official label name (INCIInternational name of cosmetic ingredients: the one printed on the pack. name, EU glossary of cosmetic ingredient names), No 13674
- Preservative allowed under conditions (Annex V)
ISOBUTYL BENZOATE: Preservative allowed under conditions, maximum 0.5% in the ready-for-use preparation (acid) (Annex V, entry 1a), under Regulation (EC) No 1223/2009. Annexes of the Regulation consulted on 23 October 2026.
Who it concerns
What official classifications and rules say for each group. A classification describes the hazard of the pure substance, not the risk of a product that contains it, which depends on the dose and the exposure.
Prohibition or serious classificationThe text prohibits the substance for this use, or ranks it among the most serious hazards (known or presumed carcinogenic, mutagenic or reprotoxic, identified endocrine disruptor).Worth watchingThe text sets a condition or flags a hazard worth knowing: allergen, suspected effect, condition for children, hazard to the aquatic environment.For informationOfficial information with no condition on a finished product: warning to read, irritation of the pure substance.
Pregnancy and breastfeeding
No classification harmonised by the European Union covers reproduction, the unborn child or breastfeeding for this substance. This does not mean it has been judged to have no effect during pregnancy.
Babies and children
The Cosmetics Regulation sets no age-related condition for this ingredient.
Skin, eyes and allergies
No harmonised classification for sensitisation, irritation or eye damage, and no obligation to label it as an allergen.
Environment
No harmonised classification as hazardous to the aquatic environment, and it is not on ECHAEuropean Chemicals Agency.'s Candidate List as an endocrine disruptor for the environment.
Read on the label
The Cosmetics Regulation requires no warning to be printed for this ingredient.
In plain words
What it is used for
Functions declared by manufacturers:
Fragrance.
Preservative: inhibits primarily the development of micro-organisms in cosmetics.
Solvent: dissolves other substances.
Functions declared in the CosIngThe European Commission's database of cosmetic ingredients. inventory. CosIng, inventory of cosmetic ingredients (INCI names, CAS, EC, functions), retrieved 21 October 2026.
Definitions of functions (decision repealed on 8 May 2020, cited for information). Decision 2006/257/EC, inventory of cosmetic ingredients (definitions of functions), retrieved 22 October 2026.
What the rules say
An ingredient can be used as a preservative only if it appears on the list of Annex V. ISOBUTYL BENZOATE is on it with a maximum concentration.
CosIng, Annex V of Regulation (EC) No 1223/2009 (allowed preservatives), retrieved 23 October 2026, source updated 13 October 2026.
Origin and odour
Molecule occurring naturally in plants or organisms; the cosmetic ingredient may be extracted from them, produced by fermentation or synthesised: the label does not say which.
Basis: one CosIng CAS and natural occurrence recorded in Wikidata (LOTUS database).
Wikidata: names of substances in six languages and taxa in which they occur (largely from the LOTUS database), retrieved 23 October 2026.
Natural occurrence recorded in Wikidata (LOTUS database): 3 taxa; examples: Hypericum perforatum, Chamaemelum nobile, Acca sellowiana.
Wikidata: names of substances in six languages and taxa in which they occur (largely from the LOTUS database), retrieved 23 October 2026.
Other names: Isobutylbenzoat (German).
Wikidata: names of substances in six languages and taxa in which they occur (largely from the LOTUS database), retrieved 23 October 2026.
Present in 0.0% of recorded cosmetics (0 out of 20 711).
Open Beauty Facts, export of cosmetic products, retrieved 23 October 2026.
Data “Open Beauty Facts and its contributors”, licensed under ODbL 1.0 (opendatacommons.org/licenses/odbl/1-0); derived table distributed under the same licence.
The text of the annexes
Preservative allowed under conditions
- Maximum concentration
- 0.5% (acid)
- Entry
- Annex V, No 1a
- Substance
- Salts of benzoic acid other than that listed under reference number 1 and esters of benzoic acid
- Glossary names
- AMMONIUM BENZOATE / BUTYL BENZOATE / CALCIUM BENZOATE / ETHYL BENZOATE / ISOBUTYL BENZOATE / ISOPROPYL BENZOATE / MAGNESIUM BENZOATE / MEA-BENZOATE / METHYL BENZOATE / PHENYL BENZOATE / POTASSIUM BENZOATE / PROPYL BENZOATE
- CAS
- 1863-63-4 /2090-05-3 / 582-25-2 / 553-70-8 / 4337-66-0 / 93-58-3 / 93-89-0 / 2315-68-6 / 136-60-7 / 120-50-3 / 939-48-0 / 93-99-2
- EC
- 217-468-9 / 218-235-4 / 209-481-3 / 209-045-2 / 224-387-2 / 202-259-7 / 202-284-3 / 219-020-8 / 205-252-7 / 204-401-3 / 213-361-6 / 202-293-2
Regulation (EC) No 1223/2009, Annex V, entry 1a. CosIng, Annex V of Regulation (EC) No 1223/2009 (allowed preservatives), retrieved 23 October 2026, source updated 13 October 2026.
Entry from Regulation (EC) No 1223/2009, adopted on 30 November 2009.
What has changed, and what will change
Dates of the texts that cover this ingredient. A text date may cover several substances: the details of each entry are below.
Annex V, entry 1a: introduced or replaced by Regulation (EC) No 1223/2009
Annex V, entry 1a: applies from this date
Identity
- CosIng identifier
- 34602
- CAS (according to CosIng)
- 120-50-3
- EC (according to CosIng)
- 204-401-3
- Declared functions
- Fragrance, Preservative, Solvent
- Wikidata
- Q27159676
- PubChem
- 61048
- ECHA InfoCard
- 100.004.002
- InChIKey
- KYZHGEFMXZOSJN-UHFFFAOYSA-N
CosIng inventory. CosIng, inventory of cosmetic ingredients (INCI names, CAS, EC, functions), retrieved 21 October 2026.
Wikidata, items with a CosIng identifier (P3073), retrieved 22 October 2026.
Wikidata, PubChem and ECHA links are published only when verified: same CosIng identifier, a single item, matching CAS number.
Elsewhere in the world
Information on other jurisdictions, with no effect on sale in France. What is covered, and what is not yet.
Comparison between countries
Most restrictive status in each country, and the maximum concentration cited. The details and the source of each rule follow.
| Country | Rule | Maximum concentration cited |
|---|---|---|
| European Union | Preservative allowed under conditions | 0.5% |
| United Kingdom | Preservative allowed under conditions | 0.5% |
| Switzerland | EU Regulation applies | 0.5% |
| United States (federal) | No federal rule recorded | not cited |
| Canada | No entry in the lists recorded | not cited |
| Japan | No entry in the lists recorded | not cited |
| South Korea | Restricted differs from the EU | 0.5 to 2.5% |
| China | Not on the prohibited lists recorded (lists of allowed substances are not recorded) | not cited |
| Australia | No entry in the lists recorded | not cited |
| ASEAN | Allowed preservative | 0.5% |
| Taiwan | No entry in the lists recorded | not cited |
| Brazil | No entry in the lists recorded | not cited |
United Kingdom (Great Britain)
- Preservative allowed under conditions (Annex V)
Same entries as in the European Union. Their maximum concentrations are compared in the “Comparison between countries” table; other conditions (product types, warnings) may differ.
Annexes II to VI in force. United Kingdom, Annexes II to VI of Regulation (EC) No 1223/2009 as retained and amended, retrieved 21 October 2026.
Contains public sector information licensed under the Open Government Licence v3.0.
Northern Ireland applies EU law.
Switzerland
Regulation (EC) No 1223/2009 applies in Switzerland (Article 54 of the Ordinance on Foodstuffs and Utility Articles).
Switzerland, FDHA Ordinance on Cosmetic Products (OCos, SR 817.023.31), consolidated version, retrieved 22 October 2026.
United States, federal rules
None of the integrated sections of the federal code (21 CFR 700.11 to 700.27 and 250.250) targets this name. The FDA does not publish a list of allowed ingredients.
United States, 21 CFR part 700 and section 250.250 (FDA rules on cosmetic ingredients), eCFR, retrieved 21 October 2026.
The eCFR is not an official legal edition of the Code of Federal Regulations.
South Korea
- Restricted: 벤조익애씨드, 그 염류 및 에스텔류 (ISOBUTYL BENZOATE)
별표 2, 보존제 성분 (preservatives), entry 15, page 3-4. Limit: 산으로서 0.5% (다만,벤조익애씨드 및그 소듐염은 사용 후 씻어내는 제품에는 산으로서 2.5%).
Conditions, source text, in Korean
화학물질명: 벤조익애씨드 (CAS No. 65-85-0) | 화학물질명: 소듐벤조에이트 (CAS No. 532-32-1) | 화학물질명: 암모늄벤조에이트 (CAS No. 1863-63-4) | 화학물질명: 부틸벤조에이트 (CAS No. 136-60-7) | 화학물질명: 칼슘벤조에이트 (CAS No. 2090-05-3) | 화학물질명: 에틸벤조에이트 (CAS No. 93-89-0) | 화학물질명: 이소부틸벤조에이트 (CAS No. 120-50-3) | 화학물질명: 이소프로필벤조에이트 (CAS No. 939-48-0) | 화학물질명: 엠이에이-벤조에이트 (CAS No. 4337-66-0) | 화학물질명: 마그네슘벤조에이트 (CAS No. 553-70-8) | 화학물질명: 메틸벤조에이트 (CAS No. 93-58-3) | 화학물질명: 페닐벤조에이트 (CAS No. 93-99-2) | 화학물질명: 포타슘벤조에이트 (CAS No. 582-25-2) | 화학물질명: 프로필벤조에이트 (CAS No. 2315-68-6)
South Korea, MFDS Regulation on Safety Standards for Cosmetics, Notification 2026-19, retrieved 22 October 2026.
Source: 식품의약품안전처 (MFDS), 화장품 안전기준 등에 관한 규정, via law.go.kr; table formatted by the publisher of this site.
ASEAN (South-East Asia)
- Allowed preservative: Salts of benzoic acid other than that listed under reference number 1 and esters of benzoic acid Ammonium benzoate (CAS No.1863-63-4)/ Calcium benzoate (CAS No. 2090-05-3)/ Potassium benzoate (CAS No. 582-25-2)/ Magnesium benzoate (CAS No. 553-70-8)/ MEA- benzoate (CAS No. 4337-66-0)/ Methyl benzoate (CAS No. 93-58-3) / Ethyl benzoate (CAS No. 93-89-0)/ Propyl benzoate (CAS No. 92315-68-6)/ Butyl benzoate (CAS No. 136-60-7) / Isobutyl benzoate (CAS No. 120-50-3)/ Isopropyl benzoate (CAS No. 939-48-0)/ Phenyl benzoate (CAS No. 93-99-2)
Annex VI (allowed preservatives), entry 1a, page 267. Limit: 0.5% (acid).
ASEAN Cosmetic Directive, Annexes II, III, IV, VI and VII (version 2026-1 of 22 June 2026, Annex VII 2025-2), retrieved 24 October 2026.
Source: ASEAN Cosmetic Documents, Annexes of the ASEAN Cosmetic Directive, as published by the Health Sciences Authority (HSA, Singapore); table extracted and formatted by the publisher of this site, with no endorsement by HSA or ASEAN.
Glossary: Commission Implementing Decision (EU) 2025/1175. Page updated on 23 October 2026.