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Merck

52367

Hexadecyltrimethylammonium bromide

suitable for ion pair chromatography, LiChropur™

Synonym(s):

CTAB, Cetrimonium bromide, Cetyltrimethylammonium bromide, Palmityltrimethylammonium bromide

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About This Item

Linear Formula:
CH3(CH2)15N(Br)(CH3)3
CAS Number:
57-09-0
Molecular Weight:
364.45
UNSPSC Code:
23151817
NACRES:
NB.21
PubChem Substance ID:
329757827
EC Number:
200-311-3
Beilstein/REAXYS Number:
3598189
MDL number:
MFCD00011772

Key Documents

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Product Name

Hexadecyltrimethylammonium bromide, suitable for ion pair chromatography, LiChropur™

InChI key

LZZYPRNAOMGNLH-UHFFFAOYSA-M

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

SMILES string

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

description

cationic

assay

≥99.0% (AT)

form

powder or crystals

quality

LiChropur™

mol wt

average mol wt 62,000

aggregation number

170

technique(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

Quality Level

100

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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.

General description

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.

Other Notes

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

Legal Information

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

signalword

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

11 - Combustible Solids

wgk

WGK 3

flash_point_f

471.2 °F - closed cup

flash_point_c

244 °C - closed cup

ppe

dust mask type N95 (US), Eyeshields, Faceshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
BCCF2140
BCBR8121V

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E. Kwong et al.
Journal of Chromatography A, 28, 563-563 (1990)
A. Junker-Buchheit et al.
J. Planar Chromatogr., 1, 214-214 (1988)
Hexadecyltrimethylammonium bromide.
Campanelli AR and Scaramuzza L.
Acta Crystallographica Section C, Crystal Structure Communications, 42 (10), 1380-1383 (1986)
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)
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