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Hexadecyltrimethylammonium bromide

suitable for ion pair chromatography, LiChropur

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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

description

cationic

Quality Level

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

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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This Item
H6269H5882H9151
Hexadecyltrimethylammonium bromide BioXtra, ≥99%

Sigma-Aldrich

H9151

Hexadecyltrimethylammonium bromide

Premium Grade
assay

≥99.0% (AT)

assay

≥99%

assay

≥98%

assay

≥99%

form

powder or crystals

form

powder or crystals

form

(solids)

form

crystalline, powder or crystals

mol wt

average mol wt 62,000

mol wt

micellar avg mol wt 62,000

mol wt

micellar avg mol wt 62,000

mol wt

micellar avg mol wt 62,000

aggregation number

170

aggregation number

170

aggregation number

170

aggregation number

170

technique(s)

ion pair chromatography: suitable

technique(s)

-

technique(s)

DNA extraction: suitable, RNA extraction: suitable

technique(s)

-

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.
Hexadecyltrimethylammonium bromide (CTAB) is one of the most studied cationic surfactant.

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

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Customers Also Viewed

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)
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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