What does the restriction note for POTASSIUM BUTYLPARABEN mean?

The restriction field for POTASSIUM BUTYLPARABEN reads: V/12. This is the restriction note from the CosIng inventory. For authoritative conditions and limits, always refer to the linked annex entries.

What other records share CAS 38566-94-8?

CAS 38566-94-8 may appear across multiple EU annex records. The CAS lookup page shows all Annex II–VI entries sharing this identifier, useful for identifying cross-annex regulatory status of the same chemical substance.

How do I check if my formula contains POTASSIUM BUTYLPARABEN?

Use the INCI Checker to screen a full ingredient list across selected markets, or use the substance market comparison to review this identity across all supported market datasets.

InventoryRef 3693811/08/2020

POTASSIUM BUTYLPARABEN

Potassium butyl 4-oxidobenzoate

POTASSIUM BUTYLPARABEN is linked to 2 EU annex records on this page. Inventory note: V/12.

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Regulatory evidence by market

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Market	Evidence status	Records	Source language
European Union	Evidence linked Positive-list entry with conditions Open this evidence	2	English and EU languages
Great Britain	Source mapped Official source mapped; ingredient rule not imported	0	English
Canada	Source mapped Official source mapped; ingredient rule not imported	0	English and French
New Zealand	Evidence linked Permitted list with conditions Open this evidence	1	English
ASEAN	Source mapped Official source mapped; ingredient rule not imported	0	English and national languages
China	Source mapped Official source mapped; ingredient rule not imported	0	Chinese with selected English material
Japan	Source mapped Official source mapped; ingredient rule not imported	0	Japanese; official English translation available
South Korea	Source mapped Official source mapped; ingredient rule not imported	0	Korean with some English names
United States	Source mapped Official source mapped; ingredient rule not imported	0	English
Australia	Source mapped Official source mapped; ingredient rule not imported	0	English
Brazil	Source mapped Official source mapped; ingredient rule not imported	0	Portuguese with INCI crosswalks
India	Source mapped Official source mapped; ingredient rule not imported	0	English and Hindi
Saudi Arabia	Source mapped Official source mapped; ingredient rule not imported	0	Arabic and English

Chemical identity and properties

PubChem 2D chemical structure for CAS 38566-94-8

CAS 38566-94-8PubChem CID 23663689

Potassium Butylparaben

The CIR Expert Panel concluded that the following 20 parabens are safe in cosmetics in the present practices of use and concentration described in the safety assessment when the sum of the combined concentration of parabens in any given formulation does not exceed 0.8 %...Potassium Butylparaben... — Cosmetic Ingredient Review (CIR)

IUPAC name: potassium 4-butoxycarbonylphenolate

Molecular formula: C11H13KO3
Molecular weight: 232.32 g/mol
Exact mass: 232.05017576 Da
Topological polar surface area: 49.4 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 3
Covalent units: 2
Defined stereocentres: 0

Also known as

UNII-PGG48E5PSXPGG48E5PSXEINECS 254-009-1BUTYLPARABEN, POTASSIUM SALTP-HYDROXYBENZOATE POTASSIUM SALTBENZOIC ACID, 4-HYDROXY-, BUTYL ESTER, POTASSIUM SALTBENZOIC ACID, 4-HYDROXY-, BUTYL ESTER, POTASSIUM SALT (1:1)RefChem:175435

7 more reported names

POTASSIUM BUTYLPARABEN [INCI]Potassium butyl 4-oxidobenzoatepotassium;4-butoxycarbonylphenolatePotassium Butyl 4-hydroxybenzoateMSK2512KDPMDQHINTKFMKS-UHFFFAOYSA-MPotassium 4-(butoxycarbonyl)phenolate

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

EPA DTXSID:DTXSID90191890

Retrieved from NIH PubChem on 2026-09-02 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Inventory details for POTASSIUM BUTYLPARABEN

INCI name

POTASSIUM BUTYLPARABEN

Description

Potassium butyl 4-oxidobenzoate

Record provenance

Inventory reference: 36938
Imported identity: POTASSIUM BUTYLPARABEN
Source update: 11/08/2020

European Commission CosIng source notes

Annex records for POTASSIUM BUTYLPARABEN

Annex V Restriction reference

Entry 12

4-HYDROXYBENZOIC ACID / METHYLPARABEN /POTASSIUM ETHYLPARABEN /POTASSIUM PARABEN /SODIUM METHYLPARA…

CAS: 99-96-7 /99-76-3 /36457-19-9 /16782-08-4 /5026-62-0 /35285-68-8 /120-47-8 /114-63-6 /26112-0-2 /69959-44-0

EC: 202-804-9 /202-785-7 /253-048-1 /240-830-2 /225-714-1 /252-487-6 /204-399-4 /204-051-1 /247-464-2 /274-235-4

Annex V Identified ingredient

Entry 12 a

BUTYLPARABEN/PROPYLPARABEN/SODIUM PROPOYLPARABEN/SODIUM BUTYLPARABEN/POTASSIUM BUTYLPARABEN/POTASSI…

CAS: 94-26-8/ 94-13-3/ 35285-69-9/ 36457-20-2/ 38566-94-8/ 84930-16-5

EC: 202-318-7/ 202-307-7/ 252-488-1/ 253-049-7/ 254-009-1/ 284-597-5

Key data

CAS

38566-94-8

254-009-1

Restriction

V/12

Function

PRESERVATIVE: Exclusively or mainly intended to inhibit the development of micro-organisms in the cosmetic product. All authorised preservatives are substances in the positive list of Annex V to the Cosmetics Regulation 1223/2009.

Official EU ingredient-name evidence

The ingredient name exactly matches the official 2025 EU glossary of common ingredient names.

#22568 · POTASSIUM BUTYLPARABEN

Ingredients with overlapping formulation functions

PIROCTONE OLAMINEANTI-SEBORRHEIC, PRESERVATIVE

POLYAMINOPROPYL BIGUANIDEPRESERVATIVE

POLYOXYMETHYLENE GLYCOL UREAPRESERVATIVE

POTASSIUM BENZOATEPRESERVATIVE

POTASSIUM CALCIUM SILVER PHOSPHATES EXTRACTANTI-SEBUM, ANTIMICROBIAL, ANTIPERSPIRANT, DEODORANT, PRESERVATIVE

POTASSIUM ETHYLPARABENPRESERVATIVE

POTASSIUM GLYCERYL TRICETEARATE/CITRATEBINDING, BULKING, EMULSION STABILISING, PRESERVATIVE, SKIN CONDITIONING, SKIN CONDITIONING - EMOLLI…

POTASSIUM METABISULFITEHAIR WAVING OR STRAIGHTENING, PRESERVATIVE, REDUCING

Additional official and scientific sources

11 external databases to check this identity in

Each link searches that source for this identity. What each source is, and its legal weight

ECHA CHEM / Information on chemicals PubChem PUG REST EU Safety Gate cosmetic product alerts ECHA CHEM US EPA CompTox Cosmetic Ingredient Review safety assessments FDA Global Substance Registration System ILO/WHO International Chemical Safety Cards Japan NITE-CHRIP NIOSH Pocket Guide to Chemical Hazards OECD eChemPortal

How POTASSIUM BUTYLPARABEN appears in the CosIng inventory

The CosIng inventory lists POTASSIUM BUTYLPARABEN as a cosmetic ingredient and this page links it to 2 annex records. The inventory entry captures names and identifiers, while the annex records show where the substance is prohibited, restricted or positively listed in EU cosmetics law.

POTASSIUM BUTYLPARABEN is also tagged with 1 cosmetic function in the official data. Function labels describe intended use, but they do not replace regulatory review of linked annex records before formulation or labelling work.

Frequently asked questions

POTASSIUM BUTYLPARABEN appears in the EU CosIng inventory and has linked annex records. Check the annex records above for applicable restrictions, concentration limits and conditions of use. Annex II listing means prohibited; Annex III means restricted; Annexes IV, V and VI mean permitted under specified conditions.

The restriction field for POTASSIUM BUTYLPARABEN reads: "V/12". This is the restriction note recorded in the CosIng inventory for this ingredient. For authoritative conditions and limits, always refer to the linked annex entries above.

According to the EU CosIng inventory, POTASSIUM BUTYLPARABEN carries the following function designation(s):

PRESERVATIVE

CAS 38566-94-8 may appear across multiple EU annex records. Viewing the CAS lookup page shows all Annex II–VI entries sharing this identifier, which is useful for identifying cross-annex regulatory status of the same chemical substance.

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Source note for POTASSIUM BUTYLPARABEN

This page combines the CosIng inventory entry for POTASSIUM BUTYLPARABEN with 2 linked Annex II–VI records from the local dataset built from public European Commission cosmetic ingredient materials.

Use this inventory page to research POTASSIUM BUTYLPARABEN and compare linked records, but verify restrictions and legal status against the current official source text and law before making regulatory decisions.

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