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52367 Sigma-Aldrich

Hexadecyltrimethylammonium bromide

for ion pair chromatography

Synonym: CTAB, Cetrimonium bromide, Cetyltrimethylammonium bromide, Palmityltrimethylammonium bromide

  • CAS Number 57-09-0

  • Linear Formula CH3(CH2)15N(Br)(CH3)3

  • Molecular Weight 364.45

  •  Beilstein Registry Number 3598189

  •  EC Number 200-311-3

  •  MDL number MFCD00011772

  •  PubChem Substance ID 24874357

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Properties

Related Categories Acidic Ion Pair Reagents (Anionic), Analytical Reagents, Analytical/Chromatography, Biochemicals and Reagents, Buffers & Reagents,
grade   for ion pair chromatography
description   cationic
InChI Key   LZZYPRNAOMGNLH-UHFFFAOYSA-M
assay   ≥99.0% (AT)
form   powder or crystals
mol wt   average mol wt 62,000
aggregation number   170
CMC   0.92
mp   248-251 °C(lit.)
solubility   H2O: soluble36.4 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

Description

Other Notes

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

Same product — same quality — now Sigma-Aldrich brand

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.

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

Price and Availability

Suggested Laboratory Gloves


Laboratory GlovesThis substance has been tested against several types of hand protection for CE compliance. Click below to find the recommended gloves for handling this product.




All labs need water
Safety & Documentation

Safety Information

Signal word 
Danger
Hazard statements 
Target organs 
Gastrointestinal tract
Personal Protective Equipment 
RIDADR 
UN 3077 9 / PGIII
WGK Germany 
3
RTECS 
BQ7875000
Flash Point(F) 
471.2 °F
Flash Point(C) 
244 °C

Documents

Certificate of Analysis

Protocols & Articles

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Peer-Reviewed Papers
15

References

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