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52367

Supelco

Hexadecyltrimethylammonium bromide

suitable for ion pair chromatography, LiChropur

Synonym(s):
CTAB, Cetrimonium bromide, Cetyltrimethylammonium bromide, Palmityltrimethylammonium bromide
Linear Formula:
CH3(CH2)15N(Br)(CH3)3
CAS Number:
Molecular Weight:
364.45
Beilstein:
3598189
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NB.21

Quality Level

description

cationic

assay

≥99.0% (AT)

form

powder or crystals

quality

LiChropur

mol wt

average mol wt 62,000

aggregation number

170

application(s)

ion pair chromatography: suitable

CMC

0.92

mp

248-251 °C (lit.)

solubility

H2O: soluble 36.4 g/L at 20 °C (completely)

λ

10 % in methanol

UV absorption

λ: 240 nm Amax: 0.04
λ: 250 nm Amax: 0.03
λ: 260 nm Amax: 0.02
λ: 500 nm Amax: 0.02

HLB

11

suitability

corresponds to standard for filter test

SMILES string

[Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C

InChI

1S/C19H42N.BrH/c1-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19-20(2,3)4;/h5-19H2,1-4H3;1H/q+1;/p-1

InChI key

LZZYPRNAOMGNLH-UHFFFAOYSA-M

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General description

Hexadecyltrimethylammonium bromide (CTAB) is one of the most studied cationic surfactant.
Hexadecyltrimethylammonium bromide (CTAB) is a quaternary ammonium salt containing one long hydrophobic alkyl chain called amphiphile. The hydrophobic ions interact forming discrete aggregates possessing a hydrophobic core and a polar surface, called micelles in polar solution.

Application

CTAB was used in preparing buffer solutions prepared during the determination of organic acids in port wine capillary zone electrophoresis using indirect UV detection with 2,6-pyridinedicarboxylic acid.

Other Notes

Additive for ion-pair chromatography; Ion-pair reagent for TLC

Legal Information

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

Signal Word

Danger

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

WGK

WGK 3

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

H. Siren et al.
Mikrochimica Acta, 2 (1-3), 77-77 (1989)
E. Kwong et al.
Journal of Chromatography A, 28, 563-563 (1990)
A. Junker-Buchheit et al.
J. Planar Chromatogr., 1, 214-214 (1988)
Using capillary electrophoresis for the determination of organic acids in Port wine.
Esteves, Valdemar I., et al.
Analytica Chimica Acta, 513, 163-167 (2004)
G.P. Tomkinson et al.
J. Planar Chromatogr., 3, 491-491 (1990)

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