Di-n-decyldimethylammonium Bromide(DDAB)
Instructions for Use
Product information
DDAB, also known as dodecyltrimethylammonium bromide, is a cationic surfactant with specific solubility, stability, and storage conditions. 1. Solubility: DDAB is soluble in water and organic solvents such as ethanol and chloroform. It forms clear solutions in water, but can become turbid at high concentrations or low temperatures. It has a higher solubility in organic solvents compared to CTAB. 2. Stability: DDAB is relatively stable under normal storage conditions. However, it can undergo degradation and lose its surfactant properties if exposed to extreme temperatures, humidity, or oxidizing agents for extended periods. It is important to store DDAB in a cool, dry place away from direct sunlight. 3. Storage conditions: DDAB should be stored in a tightly sealed container to prevent moisture absorption and contamination. It is recommended to store it at room temperature (around 20-25°C) or in a refrigerator (2-8°C) to maintain its stability and extend its shelf life.
| CAS No. | Not available |
| Chemical Name | Di-n-decyldimethylammonium Bromide(DDAB) |
| Formula | C22H48BRN |
| M.Wt | 406.5272 |
| Purity | >98% |
| Storage | Original product: up to 1 year under the storage conditions stated on the vial, kept tightly sealed. Stock solutions: aliquots at -20°C, generally up to one month. |
| Shipping condition | Ships from Shanghai. Pure lipid is stable during ice-pack transport. |
Formulation & study context
Literature information refers to the cited study and its particular formulation. Administration routes are research context, not clinical instructions or a guarantee of performance.
A complete product-specific formulation has not been verified. No standard ratio is substituted.
| N/P ratio | Not reported in the verified record |
| Cargo | Not available in the verified record |
| Administration route | Not available in the verified record |
| Animal model | Not available in the verified record |
| Formulation process | Not available in the verified record |
N/P is the molar ratio of specified lipid nitrogen groups to nucleic-acid phosphate groups. A lipid:cargo mass ratio is a different quantity and must not be used as N/P.
Stock-solution preparation table
Calculated from the product-page molecular weight: 406.5272 g/mol. Volumes are final solution volumes.
| Lipid mass | 1 mM | 5 mM | 10 mM |
|---|---|---|---|
| 10 mg | 24.599 mL | 4.920 mL | 2.460 mL |
| 25 mg | 61.497 mL | 12.299 mL | 6.150 mL |
| 50 mg | 122.993 mL | 24.599 mL | 12.299 mL |
| 100 mg | 245.986 mL | 49.197 mL | 24.599 mL |
| 250 mg | 614.965 mL | 122.993 mL | 61.497 mL |
Volume (mL) = mass (mg) × 1000 / [MW (g/mol) × concentration (mM)]. These are mathematical conversions, not measured solubility or validated solvent recommendations. Confirm solvent compatibility and the molecular weight of the exact material before use.
Open editable solution calculators →Handling & storage
Provided that storage conditions are as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to 1 year.
Wherever possible, prepare and use solutions on the same day. If stock solutions must be prepared in advance, store them as aliquots in tightly sealed vials at -20°C. Generally, these will be usable for up to one month.
Before use, and prior to opening the vial, allow the product to equilibrate to room temperature for at least 1 hour.
References
Not available