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/REAXYS Number:
3598189
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NB.21
Pricing and availability is not currently available.

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

Target Organs

Gastrointestinal tract, Respiratory system

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

RIDADR

UN 3077 9 / PGIII

WGK Germany

WGK 3

Flash Point(F)

471.2 °F - closed cup

Flash Point(C)

244 °C - closed cup

Certificate of Analysis
Certificate of Origin
Peter A. Williams, M.J. Hudson
Recent Developments in Ion Exchange, 88-88 (2012)
H. Siren et al.
Mikrochimica Acta, 2 (1-3), 77-77 (1989)
Hexadecyltrimethylammonium bromide.
Campanelli AR and Scaramuzza L.
Acta Crystallographica Section C, Crystal Structure Communications, 42 (10), 1380-1383 (1986)
E. Kwong et al.
Journal of Chromatography A, 28, 563-563 (1990)
A. Junker-Buchheit et al.
J. Planar Chromatogr., 1, 214-214 (1988)

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