Dimethyldioctadecylammonium bromide
Synonym(s):Dimethyldioctadecylammonium (Bromide Salt);Distearyldimethylammonium bromide
- CAS NO.：3700-67-2
- Empirical Formula: C38H80BrN
- Molecular Weight: 630.95
- MDL number: MFCD00041975
- EINECS: 223-037-6
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-01-13 11:26:44
What is Dimethyldioctadecylammonium bromide?
Description
18:0 DDAB is a double-chained quaternary ammonium surfactant with a bromide counter ion.
Chemical properties
white powder
The Uses of Dimethyldioctadecylammonium bromide
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.]
Properties of Dimethyldioctadecylammonium bromide
| Melting point: | ~160 °C |
| Density | 1.047 |
| RTECS | RG0185984 |
| refractive index | 1.5260 (estimate) |
| storage temp. | -20°C |
| solubility | Chloroform (Slightly), Ethyl Acetate (Slightly, Heated), Hexanes (Slightly, Heat |
| form | Granular Powder |
| color | White |
| BRN | 3580323 |
| Stability: | Stable. Incompatible with strong oxidizing agents. |
| CAS DataBase Reference | 3700-67-2(CAS DataBase Reference) |
| EPA Substance Registry System | 1-Octadecanaminium, N,N-dimethyl-N-octadecyl-, bromide (3700-67-2) |
Safety information for Dimethyldioctadecylammonium bromide
| Signal word | Danger |
| Pictogram(s) |
 Skull and Crossbones Acute Toxicity GHS06  Health Hazard GHS08 |
| GHS Hazard Statements |
H302:Acute toxicity,oral H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H331:Acute toxicity,inhalation H336:Specific target organ toxicity,single exposure; Narcotic effects H351:Carcinogenicity H372:Specific target organ toxicity, repeated exposure H412:Hazardous to the aquatic environment, long-term hazard |
| Precautionary Statement Codes |
P201:Obtain special instructions before use. P273:Avoid release to the environment. P302+P352:IF ON SKIN: wash with plenty of soap and water. P308+P313:IF exposed or concerned: Get medical advice/attention. |
Computed Descriptors for Dimethyldioctadecylammonium bromide
New Products
DL-beta-(3-Bromophenyl)alanine Tetrabutylammonium perchlorate N,O-Dimethylhydroxylamine hydrochloride (RS)-beta-Amino-beta-(4-bromophenyl)propionic acid 2-Amino-5-bromo-4-(trifluoromethyl)pyridine（RM for Indian lab) N,N CARBONYL DIIMIDAZOLE Levothyroxine Impurity-F Montelukast EP Impurity-D/Montelukast USP Related Compound C Atorvastatin FXA Impurity/Atorvastatin Cyclic 6-Hydroxy Impurity Sodium Salt Isosulfan blue Keto N-Oxide Impurity Ivermectin Impurity F N-Nitroso des Methyl Tramadol/N-Nitroso-N-Desmethyl-Tramadol (R)-BoroLeu-(+)-Pinanediol-CF3COOH 1,4-bis(methylsulfonyl)butane 4-(5-amino-1-methyl-1h-benzoimidazol-2-yl)-butyric acid isopropyl ester. 5-Methyl-1,3-benzenediacetonitrile 4-Fluorothiophenol 1-methyl amino-2,4-dinitro benzene CSA (DL-10-Camphorsulfonic Acid) 2-Hydroxy-4-methylnicotinic acid 3-iodo-1H-pyrazolo[3,4-d]pyrimidin-4-amine (2S)-1-((2S,3S)-3-(2-methylbutyl)-4-oxooxetan-2-yl)pentadecan-2-yl formylleucinate 1-(3,5-dichlorophenyl)-2,2,2-trifluoroethane-1-sulfonyl chloride S-(1-(3,5-dichlorophenyl)-2,2,2-trifluoroethyl) ethanethioateRelated products of tetrahydrofuran
You may like
-
Dimethyldioctadecylammonium bromide 97.00% CAS 3700-67-2View Details
3700-67-2 -
Dimethyldioctadecylammonium bromide 95% CAS 3700-67-2View Details
3700-67-2 -
Dimethyldioctadecylammonium Bromide CAS 3700-67-2View Details
3700-67-2 -
Dimethyldioctadecylammonium bromide CAS 3700-67-2View Details
3700-67-2 -
18:0 DDAB CAS 3700-67-2View Details
3700-67-2 -
Dimethyldioctadecylammonium bromide CAS 3700-67-2View Details
3700-67-2 -
18:0 DDAB CAS 3700-67-2View Details
3700-67-2 -
1428243-26-8 98+View Details
1428243-26-8
Statement: All products displayed on this website are only used for non medical purposes such as industrial applications or scientific research, and cannot be used for clinical diagnosis or treatment of humans or animals. They are not medicinal or edible.