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Hexadecyltrimethylammonium bromide

≥96.0% (AT)

CTAB, Cetrimonium bromide, Cetyltrimethylammonium bromide, Palmityltrimethylammonium bromide
Linear Formula:
CAS Number:
Molecular Weight:
EC Number:
MDL number:
PubChem Substance ID:

Quality Level




≥96.0% (AT)


powder or chunks

mol wt

364.45 g/mol


UV/Vis spectroscopy: suitable
detection: suitable
electrophoresis: suitable


248-251 °C (lit.)


H2O: 1 g/10 mL (warm)

SMILES string




InChI key


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General description

Hexadecyltrimethylammonium bromide is a titrant for the potentiometric titration of perchlorate with ionselective electrodes.

Signal Word


Hazard Classifications

Acute Tox. 4 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Eye Dam. 1 - Skin Irrit. 2 - STOT RE 2 Oral - STOT SE 3

Target Organs

Gastrointestinal tract, Respiratory system

Storage Class Code

11 - Combustible Solids



Flash Point(F)

471.2 °F - closed cup

Flash Point(C)

244 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

Certificate of Analysis

Certificate of Origin

W Selig
Talanta, 26(11), 1061-1064 (1979-11-01)
Cetyltrimethylammonium bromide is used in the precipitation titration of perchlorate, with potentiometric end-point detection. A perchlorate, fluoroborate or nitrate ion-selective electrode may be used. The method is more sensitive than the commonly used titration with tetraphenylarsonium chloride. It can be...
See Wee Chee et al.
Nature communications, 10(1), 2831-2831 (2019-06-30)
At elevated temperatures, bimetallic nanomaterials change their morphologies because of the interdiffusion of atomic species, which also alters their properties. The Kirkendall effect (KE) is a well-known phenomenon associated with such interdiffusion. Here, we show how KE can manifest in...
Lourdes Pérez et al.
European journal of medicinal chemistry, 44(5), 1884-1892 (2008-12-17)
Biocompatible cationic surfactants from the amino acid lysine (hydrochloride salts of N(epsilon)-lauroyl lysine methyl ester, N(epsilon)-myristoyl lysine methyl ester and N(epsilon)-palmitoyl lysine methyl ester) have been prepared in high yields by lysine acylation in epsilon position with three natural saturated...
Sebastien Fraud et al.
Antimicrobial agents and chemotherapy, 52(12), 4478-4482 (2008-10-08)
The biocide chlorhexidine (CHX) as well as additional membrane-active agents were shown to induce expression of the mexCD-oprJ multidrug efflux operon, dependent upon the AlgU stress response sigma factor. Hyperexpression of this efflux system in nfxB mutants was also substantially...
Lin Wang et al.
Journal of hazardous materials, 244-245, 681-688 (2012-11-28)
Photocatalytic reduction of aqueous Cr(VI) was successfully achieved on nanostructured SnIn(4)S(8). The SnIn(4)S(8) particles with flower-like nanostructure were synthesized via a facile solvothermal method. UV-vis diffuse reflectance spectra (DRS) indicated that the SnIn(4)S(8) particles had strong absorption in visible region...

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