3282-73-3

Basic information

• Product Name: Didodecyldimethylammonium bromide
• Synonyms: n-dodecyl-n,n-dimethyl-1-dodecanaminiubromide;DIMETHYLDIDODECYLAMMONIUM BROMIDE;DI-N-DODECYLDIMETHYLAMMONIUM BROMIDE;DIDODECYLDIMETHYLAMMONIUM BROMIDE;DILAURYLDIMETHYLAMMONIUM BROMIDE;1-Dodecanaminium,N-dodecyl-N,N-dimethyl-,bromide;Didodecyl-dimethylazanium bromide;Didodecyldimethylammonium bromide 99% 25g
• CAS NO: 3282-73-3
• Molecular Formula: Br*C₂₆H₅₆N
• Molecular Weight: 462.63
• EINECS: 221-923-7
• Product Categories: Ammonium Bromides (Quaternary);Quaternary Ammonium Compounds
• Mol File: 3282-73-3.mol
• Article Data: 10

Chemical Properties

• Melting Point: 157-162 °C(lit.)
• Appearance: White to off-white/Crystalline Powder
• Density: 1.0463 (rough estimate)
• Refractive Index: 1.5260 (estimate)
• Solubility: ethanol: 0.1 g/mL, clear, colorless
• Water Solubility: Soluble in hot and cold water.
• Sensitive: Hygroscopic
• Stability: Stable. Hygroscopic. Incompatible with strong oxidizing agents, moisture.
• BRN: 3576662
• CAS DataBase Reference: Didodecyldimethylammonium bromide(CAS DataBase Reference)
• NIST Chemistry Reference: Didodecyldimethylammonium bromide(3282-73-3)
• EPA Substance Registry System: Didodecyldimethylammonium bromide(3282-73-3)

Safety Data

• Hazard Codes: Xi,Xn
• Statements: 36/37/38-22
• Safety Statements: 26-36-36/37/39
• WGK Germany: 3
• F: 3
• TSCA: Yes
• Hazardous Substances Data: 3282-73-3(Hazardous Substances Data)

Usage

Chemical Properties

white powder

Uses

Different sources of media describe the Uses of 3282-73-3 differently. You can refer to the following data:
1. (Di-n-dodecyl)dimethylammonium bromide is used as a phase transfer catalyst. It is also used as floor disinfectant. Further, it acts as surface-active agent.
2. Didodecyldimethylammonium bromide (DDAB) is a double-chain cationic surfactant.Possible applications:DDAB can be employed as a co-surfactant to synthesize well-defined multilamellar vesicular silica with an adjustable number of layers.As a surfactant to synthesize gold nanoclusters and nanocubes.It forms supersaturated reverse micelles and microemulsions that act as organized reaction microenvironments for the synthesis of barium sulfate.Calcium montmorillonite can be modified by DDAB through direct ion-exchange to synthesize thermally stable organoclay.

Purification Methods

Recrystallise the salt from acetone, acetone/ether mixture, then from ethyl acetate, wash with ether and dry it in a vacuum oven at 60o [Chen et al. J Phys Chem 88 1631 1984, Rupert et al. J Am Chem Soc 107 2628 1985, Halpern et al. J Am Chem Soc 108 3920 1986, Allen et al. J Phys Chem 91 2320 1987]. [Beilstein 4 IV 801.]

InChI:InChI=1/C26H56N.BrH/c1-5-7-9-11-13-15-17-19-21-23-25-27(3,4)26-24-22-20-18-16-14-12-10-8-6-2;/h5-26H2,1-4H3;1H/q+1;/p-1

Upstream product

• 74-83-9 methyl bromide 
• 2915-90-4 N-methyldidodecylamine 
• 112-18-5 N,N-dimethylaminododecane 
• 143-15-7 1-dodecylbromide 
• 124-40-3 dimethyl amine 
• 4536-30-5 ethylene glycol mono-n-dodecyl ether 
• 23381-53-5 didodecyldimethylammonium hydroxyde 

Downstream Products

• 3401-74-9 N,N-dimethyl-N,N-didodecylammonium chloride 
• 23381-53-5 didodecyldimethylammonium hydroxyde 

Relevant articles and documents

Three-Component Ionic Microemulsions

Necessary design features of microemulsions formed from cationic surfactant without any requirement for cosurfactant are illustrated by a study of microemulsions formed from didodecyldimethylammonium bromide in various oils.Ease of purification, preparation, and manipulation give this and related systems a considerable advantage over conventional systems in enhancing our understanding of microemulsions and emulsion behavior.

Synthesis of some acyclic quaternary ammonium compounds. Alkylation of secondary and tertiary amines in a two-phase system

A series of acyclic symmetrical and asymmetrical quaternary ammonium chlorides of the general formula R1R2R3N+AR4Cl- (R1 = Me, Bu; R2 = n-C12H25, PhCH2, C n H2n+1(OCH2CH2) m, n = 9 and 12, m = 1 and 2; R3 = n-C12H25, PhCH2, HOCH2CH2,-OOCCH2; R4 = n-C12H25, PhCH2; A = (CH2CH2O)1,2, CH2C(O)O) was synthesized by the alkylation of tertiary amines in a two-phase system containing water. A convenient method for the synthesis of the initial symmetrical and asymmetrical tertiary amines of the general formula MeNR1R2 (R1 = Me, Bu; R2 = n-C12H25, PhCH2, CnH2n+1(OCH2CH2) m, n = 9 and 12, m = 1 and 2) in an organic phase-aqueous phase heterogeneous system, which allows the use of aqueous solutions of alkali and amines, was developed. The improved method for the preparation of intermediate ethylene glycol and diethylene glycol monoethers is monoalkylation of glycols in dioxane using solid KOH in a two-phase system.

METHOD FOR THE SYNTHESIS OF QUATERNARY AMMONIUM COMPOUNDS AND COMPOSITIONS THEREOF

A novel manufacturing process is described for producing quaternary ammonium compounds having a selected anion, which may be useful in wood preservative formulations. The process involves reacting a trialkylamine with an alkyl bromide to form a quaternary tetraalkylammonium bromide salt, converting the quaternary tetraalkylammonium bromide salt to a quaternary tetraalkylammonium hydroxide salt by using an ion exchange resin, and converting the quaternary tetraalkylammonium hydroxide salt to the quaternary tetraalkylammonium salt of the selected anion.

Method of encapsulation and microcapsules produced thereby

Microcapsules are prepared by dispersing or dissolving an active component or components in a solid matrix-forming material that has been thermally softened to form an encapsulation composition. The encapsulation composition is injected as an intact stream into a quenching liquid to provide solid microcapsules.