Product Description
LDAO is a colorless to pale yellow clear liquid with a relative density of 0.98 at 20 °C. It dissolves freely in water and polar organic solvents, yet shows limited solubility in non-polar organic solvents.
Its ionic behavior in aqueous solutions varies with pH, displaying non-ionic or cationic features; it takes on cationic properties under acidic conditions (pH < 7). As an amine oxide surfactant, LDAO delivers outstanding detergency and generates plentiful, stable foam. Its melting point falls between 132 °C and 133 °C.
Chemical Properties
| Melting point | 132-133 °C(lit.) |
| Boiling point | 371.32°C (rough estimate) |
| Density | 0.996 g/mL at 20 °C |
| Vapor pressure | 0Pa at 25℃ |
| Refractive index | n20/D 1.378 |
| Fp | 113°C (closed cup)(235 |
| Storage temp | -20°C |
| Solubility | Ethanol:15.0(Max Conc. mg/mL);65.38(Max Conc. mM) |
| DMF:3.0(Max Conc. mg/mL);1.31(Max Conc. mM) | |
| DMSO:0.1(Max Conc. mg/mL);0.44(Max Conc. mM) | |
| PBS (pH 7.2):0.1(Max Conc. mg/mL);0.44(Max Conc. mM) | |
| Form | A crystalline solid |
| Pka | 4.79±0.40(Predicted) |
| Specific Gravity | 0.97 |
| Water Solubility | Insoluble in water. |
| Sensitive | Hygroscopic |
| BRN | 1769927 |
| Stability | Stable. Incompatible with strong oxidizing agents. Combustible. |
| LogP | 1.85 at 20℃ |
| EPA Substance Registry System | Lauryldimethylamine oxide (1643-20-5) |
Safety Information
| Hazard Codes | C |
| Risk Statements | 34-52/53 |
| Safety Statements | 26-36/37/39-45-27 |
| RIDADR | UN 3259 8/PG 2 |
| WGK Germany | 2 |
| RTECS | JR6650000 |
| F | 3-10 |
| TSCA | Yes |
| HazardClass | 8 |
| PackingGroup | III |
| HS Code | 29299090 |
| Hazardous Substances Data | 1643-20-5(Hazardous Substances Data) |
| Toxicity | mouse,LD50,intraperitoneal,375mg/kg (375mg/kg),French Medicament Patent Document. Vol. #4264M, |
Product Application
LDAO is mainly used in dish-washing detergents and industrial liquid bleaching agents. It acts as an efficient foam booster and stabilizer, meanwhile improving thickener compatibility and boosting the overall stability of final products.
