Overview
Lauramine oxide (CAS 1643-20-5 ), also known as LDAO, is an amphoteric surfactant that functions as a foam booster, viscosity modifier, and conditioning agent across personal care and industrial cleaning formulations.
Its behavior shifts between nonionic and cationic depending on pH, making it compatible with a broad range of surfactant systems. In shampoos, body washes, and liquid hand soaps, it thickens formulations effectively.
It stabilizes foam generated by primary surfactants such as sulfates or sulfonates. Industrial and institutional cleaning products rely on it to boost detergency and improve soil removal on hard surfaces without aggressive chemistry.
In fabric care and conditioning formulations, it contributes to softness and antistatic performance. Coatings and adhesive formulations use it as a dispersing and stabilizing agent to maintain emulsion integrity.
This material ensures stability during processing and storage. Lauramine oxide is supplied as an aqueous solution, typically at 30% active content, though concentrations vary by manufacturer.
It is available in technical and industrial grades suited to cleaning and coatings applications, as well as cosmetic-grade material meeting personal care quality standards. Bulk liquid supply is the standard format.
Commercial distribution is typically managed in IBC containers or drums. This versatile surfactant remains a staple for formulators seeking high performance and compatibility in diverse chemical environments.
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Physical Properties
| Melting Point | 132-133 °C |
| Boiling Point | 371.32°C (rough estimate) |
| Density | 0.996 g/mL at 20 °C |
| Flash Point | 113°C (closed cup)(235 |
| Appearance | Clear yellow Liquid |
| Color | White to off-white |
| Form | A crystalline solid |
| Water Solubility | Insoluble in water. |
| Vapor Pressure | 0Pa at 25℃ |
| Refractive Index | n 20/D 1.378 |
| pH | 7.0-9.0 (25°C, 0.1M in H2O) |
| Log P | 1.85 at 20℃ |
Safety & Handling
Danger GHS05 GHS07 GHS09 Hazard Statements H302 Harmful if swallowed H315 Causes skin irritation H318 Causes serious eye damage H319 Causes serious eye irritation H400 Very toxic to aquatic life H410 Very toxic to aquatic life with long lasting effects H411 Toxic to aquatic life with long lasting effects H412 Harmful to aquatic life with long lasting effects Precautionary Statements P264 Wash … thoroughly after handling. P270 Do not eat, drink or smoke when using this product. P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P317 Get emergency medical help. P321 Specific treatment (see … on this label). P330 Rinse mouth. P391 Collect spillage. P501 Dispose of contents/container in accordance with local regulations. P264+P265 Wash … thoroughly after handling. P301+P317 Get emergency medical help. P302+P352 IF ON SKIN: Wash with plenty of water. P332+P317 Get emergency medical help. P337+P317 If eye irritation persists: Get medical advice/attention. Get emergency medical help. P362+P364 Take off contaminated clothing and wash it before reuse. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P305+P354+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Trade & Regulatory
| HS Code | 29299090 |
| UN Number | 3259 |
| ADR Class | 8 |
| Packing Group | II |
| Storage Class | 11 - Combustible Solids |
| WGK (Germany) | 2 |
Other Names
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Chemical Properties
- CAS Number
- 1643-20-5
- EC Number
- 216-700-6
- Mol. Weight
- 229.40
- HS Code
- 29299090
- Category
- Surfactants