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359025

Sigma-Aldrich

Didodecyldimethylammonium bromide

98%

Synonym(s):

DDAB, Dimethyldidodecylammonium bromide

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About This Item

Linear Formula:
[CH3(CH2)11]2N(CH3)2(Br)
CAS Number:
3282-73-3
Molecular Weight:
462.63
Beilstein/REAXYS Number:
3576662
EC Number:
221-923-7
MDL number:
MFCD00041969
UNSPSC Code:
12352116
PubChem Substance ID:
24862048
NACRES:
NA.22

assay

98%

mp

157-162 °C (lit.)

SMILES string

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

InChI

1S/C26H56N.BrH/c1-5-7-9-11-13-15-17-19-21-23-25-27(3,4)26-24-22-20-18-16-14-12-10-8-6-2;/h5-26H2,1-4H3;1H/q+1;/p-1

InChI key

XRWMGCFJVKDVMD-UHFFFAOYSA-M

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Application

Didodecyldimethylammonium bromide (DDAB) is a double-chain cationic surfactant.

Possible applications:
  • DDAB can be employed as a co-surfactant to synthesize well-defined multilamellar vesicular silica with an adjustable number of layers.
  • As a surfactant to synthesize gold nanoclusters and nanocubes.
  • It forms supersaturated reverse micelles and microemulsions that act as organized reaction microenvironments for the synthesis of barium sulfate.
  • Calcium montmorillonite can be modified by DDAB through direct ion-exchange to synthesize thermally stable organoclay.

pictograms

Exclamation mark
GHS07

signalword

Warning

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

target_organs

Respiratory system

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
0000444188
0000444188
0000432498
0000432498
0000411390

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Selvi Dev et al.
Nanoscale, 4(8), 2575-2579 (2011-12-24)
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R A Carvalho et al.
Journal of colloid and interface science, 354(2), 725-732 (2010-12-15)
NMR spectroscopy has been used to study and characterize the interactions in solution between β-CD and alkyl-α,ω-bis(dodecyldimethyl ammonium bromide) gemini surfactants with the following head-group spacer lengths: 2, 4, 6, 8, and 10. The application of the method of continuous
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