What does Didecyldimonium chloride do?

Used in cosmetics as an emulsifier, a hair conditioner and a cleansing agent.

Is Didecyldimonium chloride safe?

We haven't assessed a concern score for this ingredient yet. It is listed for cosmetic use in the EU.

beauty
cleaning
food
industrial

Didecyldimonium chloride

CAS 126851-24-9

Also registered as 7 other CAS numbers

129186-13-6 · 154765-32-9 · 446279-85-2 · 879292-51-0 · 1094740-76-7 · 1632379-58-8 · 7173-51-5

Didecyldimonium chloride chemical structure

Concern score

Not assessed — no hazard data yet.

Didecyldimonium chloride in plain language

What it is: Also known as Didecyldimethylammonium chloride · Didecyl dimethyl ammonium chloride · Didecyldimethylammonium chlorid · Bardac 2250 · Dicapryldimonium chloride · Maquat 4450-E
Show all 35 names
N-Decyl-N,N-dimethyldecan-1-aminium chloride · QUATERNIUM-12 · didecyl(dimethyl)azanium chloride · 1-Decanaminium, N-decyl-N,N-dimethyl-, chloride · 1-Decanaminium, N-decyl-N,N-dimethyl-, chloride (1:1) · Acticide · Aliquat 203 · Ammonium, didecyldimethyl-, chloride · Arquad 10 · Arquad 210-50 · Arquad 210-50E · Arquad 210-80 · Arquad 210-80E · Astop · Bardac 2270E · Britewood Q · Calgon H 130 · Ddac · Dodigen 1881 · N-DECYL-N,N-DIMETHYL-1-DECANAMINIUM chloride · Nissan Cation 2DB · Odex Q · Quartamin D 10E · Quartamin D 10P · Querton 210CL · Slaoff 91 · Timbercote 2000 · didecyl dimethyl benzyl ammonium chloride · didecyldimethyl ammonium chloride
What it does: Used in cosmetics as an emulsifier, a hair conditioner and a cleansing agent.
Emulsifying
Hair conditioning
Cleansing
Antistatic
Emulsifier
Surfactant
Is it a concern?: We haven't assessed a concern score for this ingredient yet. It is listed for cosmetic use in the EU.

Regulation

No restrictions found. Didecyldimonium chloride appears in these published regulatory listings.

In marketed US drugs

Recorded in these product areas

Found in consumer products
Beauty
Cleaning
Pharma
Food
Industrial

EUCosIngActiveListed in CosIng inventory for cosmetic use.
- Listed in CosIng inventory for cosmetic use.Source →
USEPAcommercial use observedEPA CPDat observed this chemical in 380 composition records across product categories including Construction and building materials, Cleaning and safety, Food and drug. EPA CPDat classifies this chemical for functional uses including Surfactant (surface active agent), Biocide, Anti-static agent.
- EPA CPDat observed this chemical in 380 composition records across product categories including Construction and building materials, Cleaning and safety, Food and drug. EPA CPDat classifies this chemical for functional uses including Surfactant (surface active agent), Biocide, Anti-static agent.Source →
USFDAmarketed drug occurrenceFDA NDC lists this ingredient in 4 active drug products and 4 total products.
- FDA NDC lists this ingredient in 4 active drug products and 4 total products.Source →
USFDAlisted in openFDA substanceopenFDA substance registry classifies this ingredient as chemical.
- openFDA substance registry classifies this ingredient as chemical.Source →

Expert safety opinions

No expert opinion on file for Didecyldimonium chloride. These are the independent scientific bodies that assess ingredients like this one; we show an opinion only when a record we hold cites it.

SCCS
EU Scientific Committee on Consumer Safety
No SCCS opinion on file.
CIR
Cosmetic Ingredient Review (US expert panel)
No CIR safety assessment on file.

Evidence & sources

No graded research studies for Didecyldimonium chloride yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.

7 data sources

Where this comes from

CosIng
regulatory · updated 2026-09-23
Open →
EPA Chemical and Products Database
exposure · updated may-21-2015
Open →
EPA DSSTox Identifiers
chemistry · updated 2025-12-29
Open →
FDA National Drug Code Directory
regulatory · updated 2027-12-31
Open →
FDA GSRS UNII
registry · updated 2026-02-26
Open →
openFDA Substance
registry · updated 2026-05-24
Open →
PubChem Live Enrichment
chemistry · updated 2026-05-17
Open →

Suitability

Context-specific fit derived from published classifications and the current ingredient evidence profile.

Food use

Nothing to weigh for this context yet.

No signal in this context

We have no published hazard signal for this ingredient, so we cannot say how it behaves in this context — that is missing evidence, not a clean result.

Fragrance avoidance

Not a strong fit for fragrance avoidance because it carries Fragrance.

Avoid

The ingredient itself is a fragrance-linked signal, so it is better treated as an avoid case when fragrance exposure is the main concern.

Where it has been recorded

How often EPA CPDat has listed Didecyldimonium chloride in a product composition. These are source records, not Greenveil catalog products.

Source records

380

Named organisations

Construction and building materialsCleaning and safetyFood and drugPesticidesCleaning products and household carePersonal care

Typical roles

EmulsifyingHair conditioningCleansingAntistaticEmulsifierSurfactant

See products using Didecyldimonium chloride →

Catalog

Found in these products

Cosmetic and personal-care products that list Didecyldimonium chloride are shown first. Their ingredient lists include Didecyldimonium chloride; each product's own rating depends on its whole formula, so it is shown on the product page, not here.

See all 6 →Find products without it →