Surfactants
REACH
Octadecyltrimethylammonium iodide
CAS Number
4292-25-5
What is Octadecyltrimethylammonium iodide?
Octadecyltrimethylammonium iodide (CAS 4292-25-5) is a quaternary ammonium salt used industrially as a cationic surfactant.
Where is Octadecyltrimethylammonium iodide used?
- Textile and leather processing: conditions fiber surfaces and improves dye uptake by altering substrate charge
- Water treatment: disperses suspended solids and modifies wetting behavior of treatment media
- Personal care: conditioning systems requiring controlled viscosity and emulsion stability
- Paper manufacturing: surface-active agent improving sheet formation and coating adhesion
- It modifies surface charge and controls rheology.
Good to know: Purity specifications vary by supplier, with high-purity grades available for research and specialty formulation use.
Commercial specifications
- Purity specifications vary by supplier
Other Names (Synonyms)
N,N,N-Trimethyloctadecan-1-aminium iodide|RefChem:822095|trimethyl(octadecyl)azanium;iodide|behenyl trimethyl ammonium chloride|C21H46IN|1-Octadecanaminium, N,N,N-trimethyl-, iodide (1:1)|Ammonium, trimethyloctadecyl-, iodide
What are the physical properties of Octadecyltrimethylammonium iodide?
Melting Point 238-241 °C
Appearance Colorless or slightly yellow viscous liquid
How is Octadecyltrimethylammonium iodide classified and handled safely? Learn More
Danger
GHS05· Corrosive GHS06· Toxic GHS07· Irritant GHS08· Health Hazard GHS09· Environmental Hazard
Hazard Statements
H302 Harmful if swallowed
H311 Toxic in contact with skin
H314 Causes severe skin burns and eye damage
H318 Causes serious eye damage
Precautionary Statements
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P262 Do not get in eyes, on skin, or on clothing.
P264 Wash … thoroughly after handling.
P270 Do not eat, drink or smoke when using this product.