Dimethyldioctadecylammonium Bromide, registered under CAS number 3700-67-2, is a widely used quaternary ammonium compound known for its strong surfactant, antimicrobial, and emulsifying properties. With applications across pharmaceuticals, biotechnology, cosmetics, and material sciences, this compound plays a vital role in modern chemical industries.
In this article, we explore its chemical profile, key applications, benefits, and handling guidelines to give you a complete understanding of this important chemical compound.
Dimethyldioctadecylammonium Bromide is a cationic surfactant, belonging to the class of quaternary ammonium salts. It is commonly used for its strong surface-active, antistatic, and antimicrobial properties, making it suitable for a broad range of industrial and research applications.
Chemical Name: Dimethyldioctadecylammonium Bromide
CAS Number: 3700-67-2
Molecular Formula: C₃₈H₈₀BrN
Molecular Weight: Approximately 646.0 g/mol
Appearance: White to off-white waxy solid
Highly hydrophobic due to long-chain alkyl groups
Strong cationic charge, ideal for binding to negatively charged surfaces
Excellent emulsifying and dispersing ability
Thermally stable at standard conditions
Solubility: Slightly soluble in water; better solubility in organic solvents
These characteristics make it a preferred compound in formulations requiring stable emulsions or antimicrobial activity.
Used as:
A component in liposomal formulations
An adjuvant in drug delivery systems
A stabilizer in vaccine research
Its cationic nature helps in forming complexes with DNA/RNA, making it useful in gene delivery studies.
Dimethyldioctadecylammonium Bromide is known for:
Strong bactericidal properties
Use in disinfectants and sanitizing formulations
Surface treatment in healthcare and industrial environments
Commonly used in:
Hair conditioners
Skin creams
Anti-static formulations
Emulsions for high-end skincare products
Its conditioning and surfactant abilities enhance product texture and performance.
Used as:
A surfactant for nanoparticle synthesis
A dispersing agent for pigments and fillers
A phase transfer catalyst in chemical reactions
Fabric softeners
Antistatic coatings
Oilfield chemicals
Corrosion inhibitors
Highly effective even at low concentrations.
Compatible with various solvents and additives.
Ideal for stable dispersion of oils, solids, and nanoparticles.
Useful for biological and material science applications where charge interaction is essential.
To maintain product quality:
Store in a cool, dry place
Keep away from heat and moisture
Use protective gloves and eyewear during handling
Ensure good ventilation when processing
Dimethyldioctadecylammonium Bromide (CAS 3700-67-2) is an essential cationic surfactant with diverse uses in pharmaceuticals, cosmetics, nanotechnology, and industrial chemistry. With its excellent antimicrobial, emulsifying, and stabilizing properties, it continues to be a high-value compound for researchers and manufacturers worldwide.
