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Ethylhexadecyldimethylammonium bromide

Also known as: Cetyldimethylethylammonium bromide, Hexadecyl dimethyl ethyl ammonium bromide, Cetylethyldimethylammonium bromide, Dimethylethylhexadecylammonium bromide, EHDAB, CDA, CEDAB, N-Ethyl-N,N-dimethylhexadecan-1-aminium bromide, Cetethyldimonium bromide, Ammonyx DME, Bretol

Ethylhexadecyldimethylammonium bromide (CAS 124-03-8) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C20H44BrN and a molecular weight of 378.474 g/mol. Key properties include a melting point of 190 °C and a flash point of 93 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed, H315 — Causes skin irritation and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
124-03-8
Jingsj CID
J-32644-9
Molecular Formula
C20H44BrN
Molecular Weight
378.474 g/mol
Category
Aliphatic Hydrocarbons
Last updated
8/21/2026
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Physicochemical Properties

Melting Point190 °C
Flash Point93 °C
Exact Mass377.265717
LogP3.56800
Additional Property200 G/L (20 ºC)

GHS Safety & Compliance

IrritantSignal word: Warning
  • H302 — Harmful if swallowed
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation

Activity & Biological Data

Additional Information[1]. Kahu SS, et al. Two fold modified chitosan for enhanced adsorption of hexavalent chromium from simulated wastewater and industrial effluents. Carbohydr Polym. 2016 Aug 1;146:264-73. [2]. Kalinich JF, McClain DE. Staining of intracellular deposits of uranium in cultured murine macrophages. Biotech Histochem. 2001 Sep-Nov;76(5-6):247-52.

Customs & Trade Information

HS Code2923900090
Summary2923900090 other quaternary ammonium salts and hydroxides。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:30.0%

Frequently Asked Questions

What is the CAS number of Ethylhexadecyldimethylammonium bromide?

The CAS number of Ethylhexadecyldimethylammonium bromide is 124-03-8.

What are the molecular formula and molecular weight of Ethylhexadecyldimethylammonium bromide?

Ethylhexadecyldimethylammonium bromide has molecular formula C20H44BrN and molecular weight 378.474 g/mol.

Is Ethylhexadecyldimethylammonium bromide hazardous?

Ethylhexadecyldimethylammonium bromide has GHS signal word Warning and hazard statements H302 — Harmful if swallowed; H315 — Causes skin irritation; H319 — Causes serious eye irritation.

What are the upstream and downstream products of Ethylhexadecyldimethylammonium bromide?

For Ethylhexadecyldimethylammonium bromide, Upstream Products: Bromoethane, N,N-Dimethylhexadecylamine, N,N-Dimethyloctadecylamine.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "Ethylhexadecyldimethylammonium bromide (CAS 124-03-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-32644-9 (accessed 2026-11-06).

Data for reference only; verify product details with suppliers before purchase.