Product Description of LDAO (CAS#1643-20-5)
LDAO is a colorless to light yellow transparent liquid with a relative density of 0.98 at 20°C. It is readily soluble in water and polar organic solvents, while only slightly soluble in non-polar organic solvents.
In aqueous solutions, it exhibits non-ionic or cationic characteristics depending on the pH value. When the pH is below 7, it presents cationic properties. As an amine oxide, LDAO offers excellent detergency and produces abundant, stable foam. Its melting point ranges from 132 to 133°C.
LDAO 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 of LDAO (CAS#1643-20-5)
LDAO is primarily applied in dishwashing detergents and industrial liquid bleaching formulations. It functions as an effective foam booster and foam stabilizer, while also enhancing the compatibility of thickeners and improving the overall stability of the finished product.
