Cetyltrimethylammonium bromide is also known as cetrimonium bromide or hexadecyltrimethylammonium bromide. It is a quaternary ammonium salt and an organic bromide salt with the condensed structural formula [(C₁₆H₃₃)N(CH₃)₃]Br. It contains a cetyltrimethylammonium cation and functions as a cationic surfactant that readily forms micelles in aqueous solutions. It is one of the active components of the topical antiseptic cetrimide and is recognized for its excellent surface-active and antimicrobial properties. It is a white crystalline, water-soluble compound with strong emulsifying and detergent properties and is an important reagent in chemical and biological research.
CAS No.: 57-09-0
Synonyms: Cetrimonium bromide, Hexadecyltrimethylammonium bromide, Bromat.
| Physical Properties | |
| Chemical formula | C₂₄H₂₀BaN₂O₆S₂ |
| IUPAC Name | hexadecyl(trimethyl)azanium bromide |
| Molecular weight | 364.4 g/mol |
| Solubility | Soluble in water |
| Flash Point | 244 °C |
| Appearance | A white to creamy white, voluminous or free-flowing powder |
| Storage | Store at room temperature |
| Chemical Properties | |
| Color | White |
| Physical State | Solid |
| Melting Point | 248 – 251 °C |
| Ph | 5-7 |
| Odor | Odorless |
| Pictograms : |    |
| Hazard Statements : | H302: Harmful if swallowed. H315: Causes skin irritation. H318: Causes serious eye damage. H335: May cause respiratory irritation. H400: Very toxic to aquatic life. |
| Precautionary statements : | P261: Avoid breathing vapours, spray, dust, fume, gas. P273: Avoid release to the environment. P280: Wear protective gloves, protective clothing, eye protection, face protection. P301+P312: IF SWALLOWED: Call a POISON CENTRE or doctor if you feel unwell. P302+P352 – IF ON SKIN: Wash with plenty of water. P304+P340: IF INHALED: Remove person to fresh air and keep comfortable for breathing. P305+P351+P338 – IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. |
Cetyltrimethylammonium bromide is also known as cetrimonium bromide or hexadecyltrimethylammonium bromide. It is a quaternary ammonium salt and an organic bromide salt with the condensed structural formula [(C₁₆H₃₃)N(CH₃)₃]Br. It contains a cetyltrimethylammonium cation and functions as a cationic surfactant that readily forms micelles in aqueous solutions. It is one of the active components of the topical antiseptic cetrimide and is recognized for its excellent surface-active and antimicrobial properties. It is a white crystalline, water-soluble compound with strong emulsifying and detergent properties and is an important reagent in chemical and biological research.
CAS No.: 57-09-0
Synonyms: Cetrimonium bromide, Hexadecyltrimethylammonium bromide, Bromat.
| Physical Properties | |
| Chemical formula | C₂₄H₂₀BaN₂O₆S₂ |
| IUPAC Name | hexadecyl(trimethyl)azanium bromide |
| Molecular weight | 364.4 g/mol |
| Solubility | Soluble in water |
| Flash Point | 244 °C |
| Appearance | A white to creamy white, voluminous or free-flowing powder |
| Storage | Store at room temperature |
| Chemical Properties | |
| Color | White |
| Physical State | Solid |
| Melting Point | 248 – 251 °C |
| Ph | 5-7 |
| Odor | Odorless |
| Pictograms : | |
| Hazard Statements : | H302: Harmful if swallowed. H315: Causes skin irritation. H318: Causes serious eye damage. H335: May cause respiratory irritation. H400: Very toxic to aquatic life. |
| Precautionary statements : | P261: Avoid breathing vapours, spray, dust, fume, gas. P273: Avoid release to the environment. P280: Wear protective gloves, protective clothing, eye protection, face protection. P301+P312: IF SWALLOWED: Call a POISON CENTRE or doctor if you feel unwell. P302+P352 – IF ON SKIN: Wash with plenty of water. P304+P340: IF INHALED: Remove person to fresh air and keep comfortable for breathing. P305+P351+P338 – IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. |
Cetyltrimethylammonium bromide is a versatile cationic surfactant mainly used for DNA extraction, membrane protein extraction, nanoparticle synthesis, metal extraction, cosmetic applications and antiseptic formulations.
Cetyltrimethylammonium bromide (CTAB) is a cationic surfactant that lowers surface tension and forms micelles in aqueous solutions. It is useful in extraction, emulsification and synthesis of nanoparticles.
Cetyltrimethylammonium bromide does dissolve in water and forms micelles at a concentration higher than critical micelle concentration (CMC).
Cetyltrimethylammonium bromide (CTAB) is a cationic detergent used in DNA extraction to lyse cell membranes and isolate pure DNA. It is especially effective for plant tissues because it forms insoluble complexes with polysaccharides and other sticky compounds so that the DNA remains in the aqueous phase to purify.
Cetyltrimethylammonium bromide has the condensed structural formula [(C₁₆H₃₃)N(CH₃)₃]Br. The molecule consists of a quaternary ammonium cation and a bromide anion.
