Description
Specifications Table
Product Name – Dimethyldioctadecylammonium bromide, 99+%
Quantity/Pack Size – 5GR, 25GR, 100GR
Form – Solid (powder/crystals)
Grade – 99% (HPLC/GC)
Application – Phase transfer catalysis, vesicle studies, antimicrobial research
Product Overview
Dimethyldioctadecylammonium bromide (DODAB) is a high-purity quaternary ammonium surfactant with a 99% assay, designed for demanding laboratory applications requiring precise ionic interactions. This long-chain cationic compound features two C18 alkyl tails and a dimethylammonium head group, enabling exceptional micelle formation and bilayer stability in aqueous solutions. The 99% purity grade ensures minimal impurities, making it suitable for sensitive experiments involving vesicle preparation, lipid membrane studies, and phase transfer catalysis. Its hydrophobic-hydrophilic balance allows for controlled aggregation behavior, while the bromide counterion maintains ionic equilibrium in solution. The product is synthesized under stringent conditions to prevent degradation, with batch-to-batch consistency verified via HPLC and NMR spectroscopy. Storage stability is enhanced through moisture-resistant packaging, preserving its surfactant properties over extended periods. The fine crystalline powder dissolves readily in organic solvents like chloroform and methanol, facilitating homogeneous sample preparation for analytical techniques.
FAQs
1. What is the solubility profile of dimethyldioctadecylammonium bromide?
It is soluble in chloroform, methanol, and ethanol but has limited solubility in water due to its long hydrophobic chains. Heating may improve dispersion in aqueous systems.
2. Can this compound be used for preparing giant unilamellar vesicles?
Yes, its dual C18 chains and cationic head group make it ideal for forming stable GUVs through electroformation or hydration methods.
3. What alternatives exist for phase transfer catalysis applications?
Cetyltrimethylammonium bromide (CTAB) or tetrabutylammonium bromide (TBAB) can serve as alternatives, though they differ in chain length and micelle properties.
4. How should this product be stored to maintain stability?
Store in a tightly sealed container at 2-8°C, protected from light and moisture. Avoid repeated freeze-thaw cycles to prevent degradation.
5. Is this compound compatible with anionic surfactants?
No, mixing with anionic surfactants typically results in precipitation due to charge neutralization between the cationic and anionic head groups.
