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359025

Sigma-Aldrich

Didodecyldimethylammonium bromide

98%

Synonym(s):

DDAB, Dimethyldidodecylammonium bromide

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2 G
€41.20
10 G
€127.00

About This Item

Linear Formula:
[CH3(CH2)11]2N(CH3)2(Br)
CAS Number:
Molecular Weight:
462.63
Beilstein:
3576662
EC Number:
MDL number:
UNSPSC Code:
12352116
PubChem Substance ID:
NACRES:
NA.22

€41.20


In StockDetails


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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.[1][2]

Possible applications:
  • DDAB can be employed as a co-surfactant to synthesize well-defined multilamellar vesicular silica with an adjustable number of layers.[3]
  • As a surfactant to synthesize gold nanoclusters and nanocubes.[4][5]
  • It forms supersaturated reverse micelles and microemulsions that act as organized reaction microenvironments for the synthesis of barium sulfate.[6]
  • Calcium montmorillonite can be modified by DDAB through direct ion-exchange to synthesize thermally stable organoclay.[7]

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

Hazard Classifications

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

Target Organs

Respiratory system

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

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A cationic-cationic co-surfactant templating route for synthesizing well-defined multilamellar vesicular silica with an adjustable number of layers.
Zhang Y.
Chemical Communications (Cambridge, England), 50(22), 2907-2909 (2014)
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
Effects of block length and structure of surfactant on self-assembly and solution behavior of block ionomer complexes.
Bronich TK.
Langmuir, 16(2), 481-489 (2000)
Double-chained surfactants for semipermanent wall coatings in capillary electrophoresis.
Melanson JE.
Analytical Chemistry, 72(17), 4110-4114 (2000)
XRD, TEM, and thermal analysis of Arizona Ca-montmorillonites modified with didodecyldimethylammonium bromide.
Sun Z.
Journal of Colloid and Interface Science, 408, 75-81 (2013)

Questions

1–2 of 2 Questions  
  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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