|  | |  |  | Dimethyldioctadecylammonium bromide Basic information | 
|  |  | Dimethyldioctadecylammonium bromide Chemical Properties | 
| Hazard Codes | Xi |  | Risk Statements | 36/37/38-43 |  | Safety Statements | 26-37/39 |  | WGK Germany | 3 |  | TSCA | Yes |  | HazardClass | 9 |  | HS Code | 29211990 | 
|  |  | Dimethyldioctadecylammonium bromide Usage And Synthesis | 
 | Description | 18:0 DDAB is a double-chained quaternary ammonium surfactant with a bromide counter ion. |  | Chemical Properties | white powder |  | Uses | Dimethyldioctadecylammonium bromide has been used in a study to assess the interaction of its monolayers with DNA using specular neutron reflection, surface pressure-area isotherms, and Brewster angle microscopy. It has also been used in a study to investigate new adjuvants for use in kill vaccines for bovine viral diarrhea virus (BVDV). |  | General Description | 18:0 DDAB is cationic lipid and a quaternary ammonium salt. The hydrocarbon tails are saturated unlike the ionizable lipids. |  | Biochem/physiol Actions | 18:0 DDAB is a surface-active molecule, used as an adjuvant to induce systemic immune response. It is non-toxic. |  | Purification Methods | Crystallise the bromide from acetone, then MeOH [Lukac J Am Chem Soc 106 4387 1984]. Also purify it by chromatography on alumina by washing with *C6H6 and eluting with Me2CO, evaporating and crystallising from MeCN [Swain & Kreevoy J Am Chem Soc 77 1126 1955]. [Beilstein 4 IV 829.] | 
|  |  | Dimethyldioctadecylammonium bromide Preparation Products And Raw materials | 
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