What function does CETETHYLDIMONIUM BROMIDE serve in cosmetics?

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

What other records share CAS 124-03-8?

CAS 124-03-8 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 CETETHYLDIMONIUM 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 3257915/10/2010

CETETHYLDIMONIUM BROMIDE

Hexadecylethyldimethylammonium bromide

CETETHYLDIMONIUM BROMIDE is listed in the EU CosIng inventory, but no direct annex records are linked on this page yet.

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Regulatory evidence by market

No rule for this ingredient has been imported for any of the 13 markets tracked here.

That describes this inventory, not the law. No imported rule is not evidence that an ingredient is permitted: a rule may exist under another name or identifier, or in a dataset not yet imported here.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 124-03-8

CAS 124-03-8PubChem CID 31280

Cetyldimethylethylammonium bromide

IUPAC name: ethyl-hexadecyl-dimethylazanium bromide

Molecular formula: C20H44BrN
Molecular weight: 378.5 g/mol
Exact mass: 377.26571 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

BretolAmmonyx DMECetethyldimonium bromideEthyl cetabQuaternium-17Mecetronium bromideDimethylethylhexadecylammonium bromideCetylethyldimethylammonium bromide

16 more reported names

Cetyl dimethyl ethyl ammonium bromideHexadecyldimethylethylammonium bromide7ZNQ7FIO9KEthyl hexadecyl dimethyl ammonium bromideSumquat 6020NSC-8494RefChem:124722204-672-8ETHYLHEXADECYLDIMETHYLAMMONIUM BROMIDEQuaternium 17CetylcideN-Ethyl-N,N-dimethylhexadecan-1-aminium bromide1-Hexadecanaminium, N-ethyl-N,N-dimethyl-, bromideHexadecylethyldimethylammonium bromideethyl-hexadecyl-dimethylazanium;bromide1-Hexadecanaminium, N-ethyl-N,N-dimethyl-, bromide (1:1)

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

ChEMBL:CHEMBL1375045
EPA DTXSID:DTXSID2041759

Evidence from additional scientific databases

NIH PubChem PUG-View

Exact identifier match31280

Attributed physical-property, hazard, environmental and use annotations.

Physical Description: White solid; [Merck Index] White hygroscopic solid; [Acros Organics MSDS] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases

Solubility: 34.5 [ug/mL] (The mean of the results at pH 7.4) Source: Sanford-Burnham Center for Chemical Genomics

Signal: Warning Source: European Chemicals Agency (ECHA)
GHS Hazard Statements: H302 (98%): Harmful if swallowed [Warning Acute toxicity, oral]; H315 (98%): Causes skin irritation [Warning Skin corrosion/irritation]; H319 (94%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]; H335 (10%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation] Source: European Chemicals Agency (ECHA)
Precautionary Statement Codes: P261, P264, P264+P265, P270, P271, P280, P301+P317, P302+P352, P304+P340, P305+P351+P338, P319, P321, P330, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501 (click each P-code to see the statement) Source: European Chemicals Agency (ECHA)
ECHA C&L Notifications Summary: Aggregated GHS information provided per 50 reports by companies from 6 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.; Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website. Source: European Chemicals Agency (ECHA)

Sources/Uses: Used as a disinfectant and laboratory reagent; [Merck Index] No active disinfectant/germicide product registrations in the US; [NPIRS] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
Industrial Processes with risk of exposure: Using Disinfectants or Biocides [Category: Clean] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases

Mapped by: Existing checksum-valid CAS to unique PubChem CID match. Retrieved: 2026-08-31. Open source record

Scientific classifications and hazard annotations provide context and do not replace the market-specific regulatory decision shown above.

Additional source coverage and match status

Source	Result	Checked
NIH PubChem PUG-View	Exact match	2026-08-31

A recorded no-match is useful evidence that the source was checked; it is not a claim that the substance does not exist elsewhere.

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Inventory details for CETETHYLDIMONIUM BROMIDE

INCI name

CETETHYLDIMONIUM BROMIDE

Description

Hexadecylethyldimethylammonium bromide

Record provenance

Inventory reference: 32579
Imported identity: CETETHYLDIMONIUM BROMIDE
Source update: 15/10/2010

European Commission CosIng source notes

Annex records for CETETHYLDIMONIUM BROMIDE

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Key data

CAS

124-03-8

204-672-8

Restriction

—

Function

ANTIMICROBIAL: Preventing and/or slowing down microbial growth.
ANTISTATIC: Preventing and/or reducing static electricity by neutralising electrical charge on surfaces.
SURFACTANT - CLEANSING: Wetting body surfaces, emulsifying or solubilizing oils, and suspending soil (generally, such ingredients contribute to the foaming and lathering properties of cleansing products).
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.

#5932 · CETETHYLDIMONIUM BROMIDE

Ingredients with overlapping formulation functions

CERASTIUM ARCTICUM CALLUS CULTURE EXTRACTANTIMICROBIAL, ANTIOXIDANT, HAIR CONDITIONING, SKIN PROTECTING

CETALKONIUM CHLORIDEANTIMICROBIAL, ANTISTATIC, PRESERVATIVE

CETEARALKONIUM BROMIDEANTIMICROBIAL, ANTISTATIC, PRESERVATIVE

CETETHYL MORPHOLINIUM ETHOSULFATEANTIMICROBIAL, ANTISTATIC, HAIR CONDITIONING, SURFACTANT - CLEANSING, SURFACTANT - EMULSIFYING

CETRIMONIUM BROMIDEANTIMICROBIAL, ANTISTATIC, PRESERVATIVE, SURFACTANT - EMULSIFYING

CETRIMONIUM CHLORIDEANTIMICROBIAL, ANTISTATIC, PRESERVATIVE, SURFACTANT - EMULSIFYING

CETRIMONIUM METHOSULFATEANTIMICROBIAL, ANTISTATIC, HAIR CONDITIONING, SURFACTANT - CLEANSING, SURFACTANT - EMULSIFYING

CETRIMONIUM SACCHARINATEANTIMICROBIAL, ANTISTATIC, HAIR CONDITIONING

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 CETETHYLDIMONIUM BROMIDE appears in the CosIng inventory

The CosIng inventory lists CETETHYLDIMONIUM BROMIDE as a cosmetic ingredient and this page links it to 0 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.

CETETHYLDIMONIUM 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

CETETHYLDIMONIUM BROMIDE is listed in the EU CosIng ingredient inventory with no direct annex restriction records linked at this time. Absence of an annex link does not guarantee unrestricted use — always verify against the current official CosIng database before formulating.

According to the EU CosIng inventory, CETETHYLDIMONIUM BROMIDE carries the following function designation(s):

CAS 124-03-8 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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Use the INCI Checker to screen a full ingredient list across selected markets, or compare this substance across all supported market datasets.

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Source note for CETETHYLDIMONIUM BROMIDE

This page reproduces the CosIng inventory entry for CETETHYLDIMONIUM BROMIDE from public European Commission cosmetic ingredient materials and shows linked identifiers even when no direct annex match is currently attached.

Use this inventory page to research CETETHYLDIMONIUM BROMIDE 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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Tools & next steps

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