Myristyltrimethylammonium bromide

suitable for ion pair chromatography, LiChropur, ≥99.0% (AT)

Trimethyl(tetradecyl)ammonium bromide, Tetradecyltrimethylammonium bromide
Linear Formula:
CAS Number:
Molecular Weight:
Beilstein/REAXYS Number:
EC Number:
MDL number:
PubChem Substance ID:
Pricing and availability is not currently available.

Quality Level




≥99.0% (AT)



mol wt

micellar avg mol wt 27,000

aggregation number



ion pair chromatography: suitable


4-5 mM (20-25°C)


245-250 °C (lit.)


10 % in H2O

UV absorption

λ: 240 nm Amax: ≤0.08
λ: 250 nm Amax: ≤0.05
λ: 260 nm Amax: ≤0.04
λ: 500 nm Amax: ≤0.02


corresponds to standard for filter test

SMILES string




InChI key


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General description

Ion-pairing reagents as mobile phase additives facilitate the separation of ionic and highly polar substances on reversed phase HPLC columns. Their purity is an important parameter for their successful application. Sigma-Aldrich offers an wide range of tailor-made reagents for anionic (quaternary ammonium and phosphonium salts) and cationic (alkanesulfonates) analyzes. All mobile phase additives are subject to rigorous testing with special emphasis on the requirements of modern reversed phase HPLC:

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Legal Information

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

Signal Word


Target Organs

Gastrointestinal tract, Respiratory system

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves


UN 3077 9 / PGIII

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis
Certificate of Origin
Mohd Sajid Ali et al.
Journal of colloid and interface science, 352(2), 436-443 (2010-09-25)
Unfolding of rabbit serum albumin (RSA) by cationic surfactants cetyltrimethylammonium bromide (CTAB) and tetradecyltrimethylammonium bromide (TTAB) was studied by exploiting surface tensiometry, small-angle neutron scattering (SANS), intrinsic fluorescence, resonance Rayleigh scattering (RRS) (also referred as turbidity at 350/350), and circular...
Cexiong Fu et al.
Journal of chromatography. A, 1216(10), 1901-1907 (2009-02-03)
The usefulness of the micellar selectivity triangle (MST) for prediction and interpretation of separation patterns in micellar electrokinetic chromatography (MEKC) separations is presented. In addition, we demonstrate the capability of controlling selectivity properties of micelles through addition of organic modifiers...
Juan Zhang et al.
The journal of physical chemistry. B, 114(41), 13128-13135 (2010-09-28)
Two fatty acids, perfluorononanoic acid (C(8)F(17)COOH) and nonanoic acid (C(8)H(17)COOH), were mixed with a cationic hydrocarbon surfactant, tetradecyltrimethylammonium hydroxide (TTAOH), in aqueous solutions for comparative investigation. Phase behaviors of the two systems are quite different because of the special properties...
Suruchi Mahajan et al.
Langmuir : the ACS journal of surfaces and colloids, 28(50), 17238-17246 (2012-12-12)
Keeping in view the use of surfactants in drug delivery, the interactions of surface active ionic liquids, such as 1-tetradecyl-3-methylimidazolium bromide (C(14)mimBr), with drugs, viz., dopamine hydrochloride (DH) and acetylcholine chloride (AC), have been studied, and the results are further...
Dulan B Gunasekara et al.
Electrophoresis, 32(8), 832-837 (2011-03-26)
The combination of microchip electrophoresis with amperometric detection leads to a number of analytical challenges that are associated with isolating the detector from the high voltages used for the separation. While methods such as end-channel alignment and the use of...

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