Description
Specifications Table
Product Name – Didodecyldimethylammonium bromide, 99%
Quantity/Pack Size – 25GR, 100GR
Form – Solid (powder/crystals)
Grade – Laboratory Reagent (LR), 99% purity
Application – Surfactant research, antimicrobial testing, phase-transfer catalysis
Product Overview
Didodecyldimethylammonium bromide (DDAB) is a high-purity quaternary ammonium compound with a 99% assay, widely recognized for its cationic surfactant properties. This fine white to off-white powder or crystalline solid exhibits excellent solubility in organic solvents like chloroform and methanol, making it a versatile reagent in colloidal chemistry and interfacial studies. Its long alkyl chains (C12) contribute to strong hydrophobic interactions, while the positively charged nitrogen center enhances electrostatic binding, making it ideal for stabilizing emulsions, liposomes, and nanoparticle suspensions. The compound’s high purity ensures minimal interference in sensitive analytical applications, such as phase-transfer catalysis or ion-pair extraction. DDAB is also valued for its antimicrobial efficacy, attributed to its ability to disrupt microbial cell membranes. When stored under dry, cool conditions, it maintains stability over prolonged periods, though exposure to moisture or elevated temperatures may lead to gradual degradation. Researchers favor this grade for its consistency in experimental reproducibility, particularly in systems requiring precise control over surface charge and aggregation behavior.
FAQs
1. What is the solubility profile of Didodecyldimethylammonium bromide?
Didodecyldimethylammonium bromide is soluble in organic solvents like chloroform, methanol, and ethanol but has limited solubility in water due to its long hydrophobic chains.
2. Can this compound be used for preparing liposomes?
Yes, its cationic nature and amphiphilic structure make it suitable for liposome formation, often used in drug delivery and membrane studies.
3. How should I store Didodecyldimethylammonium bromide to maintain purity?
Store in a tightly sealed container under inert gas if possible, in a cool, dry place away from moisture and direct light to prevent degradation.
4. Is this product compatible with anionic surfactants?
No, mixing with anionic surfactants may lead to precipitation due to charge neutralization, reducing effectiveness in formulations.
5. What alternatives exist for similar cationic surfactant applications?
Cetyltrimethylammonium bromide (CTAB) or benzalkonium chloride are common alternatives, though their chain lengths and charge densities differ.
