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??????????? ????? ??
- ???
- 157-162 °C(lit.)
- ??
- 1.0463 (rough estimate)
- ???
- 1.5260 (estimate)
- ?? ??
- 2-8°C, sealed storage, away from moisture
- ???
- ???: 0.1 g/mL, ??, ??
- ??? ??
- ??? ??
- ??
- ???? ?????
- ???
- ??? ?? ??? ?? ?????.
- ??
- Hygroscopic
- BRN
- 3576662
- ???
- ????. ???. ?? ???, ??? ???? ????.
- InChI
- 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
- InChIKey
- XRWMGCFJVKDVMD-UHFFFAOYSA-M
- SMILES
- [N+](C)(C)(CCCCCCCCCCCC)CCCCCCCCCCCC.[Br-]
- CAS ??????
- 3282-73-3(CAS DataBase Reference)
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- ?? ? ???? ?? (GHS)
| ??? ?? | Xi,Xn | ||
|---|---|---|---|
| ?? ???? ?? | 36/37/38-22 | ||
| ????? | 26-36-36/37/39 | ||
| WGK ?? | 3 | ||
| F ?????? | 3 | ||
| TSCA | Yes | ||
| HS ?? | 29239000 |
??????????? ????? C??? ??, ??, ??
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white powder??
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.
Purification Methods
Recrystallise the salt from acetone, acetone/ether mixture, then from ethyl acetate, wash with ether and dry it in a vacuum oven at 60o [Chen et al. J Phys Chem 88 1631 1984, Rupert et al. J Am Chem Soc 107 2628 1985, Halpern et al. J Am Chem Soc 108 3920 1986, Allen et al. J Phys Chem 91 2320 1987]. [Beilstein 4 IV 801.]??????????? ????? ?? ?? ? ???
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Dihexadecyldimethylammonium chloride
Benzyldodecyldimethylammonium bromide
Rocuronium bromide
1,1,1,3,5,5,5-Heptamethyltrisiloxane
Dihexadecyldimethylammonium bromide