Didodecyldimethylammonium Bromide / DDAB CAS 3282-73-3

Product name:Didodecyldimethylammonium bromide / DDAB
CAS:3282-73-3
MF:C26H56BrN
MW:462.63

EINECS: 221-923-7
Melting point: 157-162 °C
Density: 1.0463 g/cm3

Purity:≥99%

White crystalline powder

1. Didodecyldimethylammonium bromide CAS 3282-73-3 is used as a cationic surfactant, emulsifier, and phase transfer catalyst in chemical synthesis.
2. DDAB CAS 3282-73-3 serves as a disinfectant, fungicide, and antimicrobial agent, and is used for coating silica nanoparticles to create antimicrobial surfaces with lower minimum inhibitory concentrations than the soluble surfactant.
3. Didodecyldimethylammonium bromide CAS 3282-73-3 is employed in liposome-based drug and gene delivery systems, where its gel-to-liquid-crystalline phase transition temperature of approximately 16°C allows for a fluid bilayer state at room temperature.
4. DDAB CAS 3282-73-3 is used as a template for synthesizing multilamellar vesicular silica, gold nanoclusters and nanocubes, and organoclays through ion-exchange modification of montmorillonite.

1. Store Didodecyldimethylammonium bromide CAS 3282-73-3 in a tightly closed container in a cool, dry, and well-ventilated area away from incompatible substances .
2. Didodecyldimethylammonium bromide CAS 3282-73-3 is hygroscopic and should be stored under an inert gas atmosphere, protected from moisture .
3. Recommended storage temperature for DDAB CAS 3282-73-3 is room temperature in a cool and dark place below 15°C, or 2-8°C according to some suppliers .
4. For long-term storage, Didodecyldimethylammonium bromide CAS 3282-73-3 can be kept at -20°C under inert atmosphere .

1. Didodecyldimethylammonium bromide CAS 3282-73-3 causes skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335) .
2. DDAB CAS 3282-73-3 is harmful if swallowed, with risk phrase R22, and is classified as an irritant (Xi) .
3. Didodecyldimethylammonium bromide CAS 3282-73-3 is a skin and strong eye irritant according to Alfa Aesar MSDS .
4. Chronic exposure to bromide ions from Didodecyldimethylammonium bromide CAS 3282-73-3 may theoretically cause bromide intoxication symptoms including depression, hallucinations, sedation, memory loss, and skin rash, though these effects are historically associated with medical bromide use rather than occupational exposure .

1. Didodecyldimethylammonium bromide CAS 3282-73-3 is not safe for ingestion and should be handled only by trained personnel with appropriate personal protective equipment .
2. DDAB CAS 3282-73-3 is classified as a warning-level hazard with the signal word Warning under GHS, and is not classified as a carcinogen by ACGIH, IARC, NIOSH, NTP, or OSHA .
3. Didodecyldimethylammonium bromide CAS 3282-73-3 requires protective equipment including safety glasses, chemical goggles, protective gloves, and appropriate clothing in a well-ventilated area .
4. Didodecyldimethylammonium bromide CAS 3282-73-3 must not be released into drains or the environment, as it is harmful to aquatic life, and spills should be swept up and placed in suitable containers for disposal .

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