What does the restriction note for CETRIMONIUM BROMIDE mean?

The restriction field for CETRIMONIUM BROMIDE reads: V/44. This is the restriction note from the CosIng inventory. For authoritative conditions and limits, always refer to the linked annex entries.

What function does CETRIMONIUM BROMIDE serve in cosmetics?

According to the EU CosIng inventory, CETRIMONIUM BROMIDE carries the following function designation(s): ANTIMICROBIAL, ANTISTATIC, PRESERVATIVE, SURFACTANT - EMULSIFYING.

What other records share CAS 57-09-0?

CAS 57-09-0 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 CETRIMONIUM BROMIDE?

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 3258910/08/2020

CETRIMONIUM BROMIDE

1-Hexadecanaminium, N,N,N-trimethyl-, bromide

CETRIMONIUM BROMIDE is linked to 1 EU annex record on this page. Inventory note: V/44.

INCI Checker Compare all markets Search similar

Regulatory evidence by market

This matrix separates verified ingredient rules from sources that are mapped but not yet imported. No imported rule does not mean the ingredient is permitted.

Compare markets

Swipe or scroll horizontally to see every column.

Market	Evidence status	Records	Source language
European Union	Evidence linked Positive-list entry with conditions Open this evidence	1	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 57-09-0

CAS 57-09-0PubChem CID 5974

Hexadecyltrimethylammonium Bromide

Cetyltrimethylammonium bromide is the organic bromide salt that is the bromide salt of cetyltrimethylammonium; one of the components of the topical antiseptic cetrimide. It has a role as a detergent and a surfactant. It is a quaternary ammonium salt and an organic bromide salt. It contains a cetyltrimethylammonium ion. — ChEBI

IUPAC name: hexadecyl(trimethyl)azanium bromide

Molecular formula: C19H42BrN
Molecular weight: 364.4 g/mol
Exact mass: 363.25006 Da
Topological polar surface area: 0.0 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 1
Covalent units: 2
Defined stereocentres: 0

Also known as

Cetrimonium bromideCetyltrimethylammonium bromideBromatCETABCentimideCtmabAcetoquat CTABCee dee

16 more reported names

Cetyl trimethyl ammonium bromideTrimethylcetylammonium bromideBromuro de cetrimonioN-Cetyltrimethylammonium bromideBromure de cetrimoniumCetrimonii bromidumTrimethylhexadecylammonium bromideCetrimonio bromuroN-HEXADECYLTRIMETHYLAMMONIUM BROMIDEPalmityltrimethyl ammonium bromideN,N,N-Trimethyl-1-hexadecanaminium bromideN,N,N-Trimethylcetylammonium bromideSumquat 6030N-Hexadecyl-N,N,N-trimethylammonium bromideL64N7M9BWRNSC-32927

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

ChEBI:CHEBI:3567
ChEMBL:CHEMBL307346
EPA DTXSID:DTXSID5037028

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 CETRIMONIUM BROMIDE

INCI name

CETRIMONIUM BROMIDE

INN name

cetrimonium bromide

Ph. Eur. name

cetrimidum

Description

1-Hexadecanaminium, N,N,N-trimethyl-, bromide

Record provenance

Inventory reference: 32589
Imported identity: CETRIMONIUM BROMIDE
Source update: 10/08/2020

European Commission CosIng source notes

Annex records for CETRIMONIUM BROMIDE

Annex V Restriction reference

Entry 44

BEHENTRIMONIUM CHLORIDE (1) / CETRIMONIUM BROMIDE / CETRIMONIUM CHLORIDE (2)/ LAURTRIMONIUM BROMIDE…

CAS: 17301-53-0 / 57-09-0 / 112-02-7 / 1119-94-4 / 112-00-5 / 1120-02-1 / 112-03-8

EC: 241-327-0 / 200-311-3 / 203-928-6 / 214-290-3 / 203-927-0 / 214-294-5 / 203-929-1

Key data

CAS

57-09-0

200-311-3

Restriction

V/44

Function

ANTIMICROBIAL: Preventing and/or slowing down microbial growth.
ANTISTATIC: Preventing and/or reducing static electricity by neutralising electrical charge on surfaces.
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.
SURFACTANT - EMULSIFYING: Helping suspensions or dispersions of liquids in a second liquid by reducing the surface tension of the substances to be emulsified.

Official EU ingredient-name evidence

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

#5949 · CETRIMONIUM BROMIDE

Ingredients with overlapping formulation functions

CASSYTHA FILIFORMIS POWDERANTI-SEBUM, ANTIOXIDANT, PRESERVATIVE, SKIN CONDITIONING, SKIN PROTECTING

CETALKONIUM CHLORIDEANTIMICROBIAL, ANTISTATIC, PRESERVATIVE

CETEARALKONIUM BROMIDEANTIMICROBIAL, ANTISTATIC, PRESERVATIVE

CETEARTRIMONIUM CHLORIDEANTISTATIC, HAIR CONDITIONING, PRESERVATIVE

CETRIMONIUM CHLORIDEANTIMICROBIAL, ANTISTATIC, PRESERVATIVE, SURFACTANT - EMULSIFYING

CHLORHEXIDINEANTIMICROBIAL, ORAL CARE, PRESERVATIVE

CHLORHEXIDINE DIACETATEANTIMICROBIAL, ORAL CARE, PRESERVATIVE

CHLORHEXIDINE DIGLUCONATEANTIMICROBIAL, ORAL CARE, PRESERVATIVE

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 CETRIMONIUM BROMIDE appears in the CosIng inventory

The CosIng inventory lists CETRIMONIUM BROMIDE as a cosmetic ingredient and this page links it to 1 annex record. The inventory entry captures names and identifiers, while the annex record shows where the substance is prohibited, restricted or positively listed in EU cosmetics law.

CETRIMONIUM BROMIDE is also tagged with 4 cosmetic functions 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

CETRIMONIUM BROMIDE 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 CETRIMONIUM BROMIDE reads: "V/44". 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, CETRIMONIUM BROMIDE carries the following function designation(s):

CAS 57-09-0 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.

View CAS records

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

Open INCI Checker

Source note for CETRIMONIUM BROMIDE

This page combines the CosIng inventory entry for CETRIMONIUM BROMIDE with 1 linked Annex II–VI record from the local dataset built from public European Commission cosmetic ingredient materials.

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

View sources View updates

Tools & next steps

Check your formula

Scan a full INCI list to detect CETRIMONIUM BROMIDE and any linked EU annex restrictions or allergen flags.

INCI Checker

Search similar ingredients

Find other inventory ingredients and annex entries related to CETRIMONIUM BROMIDE, its identifiers or nearby name variants.