Lauramine oxide

CAS Number
1643-20-5
EC Number
216-700-6
Abbreviation
LDAO

What is Lauramine oxide?

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.

Where is Lauramine oxide used?

  • Personal care: thickens shampoos, body washes and liquid hand soaps
  • Foam stabilisation: stabilises foam generated by primary surfactants such as sulfates or sulfonates
  • Industrial and institutional cleaning: boosts detergency and improves soil removal on hard surfaces
  • Fabric care: contributes to softness and antistatic performance
  • Coatings and adhesives: dispersing and stabilising agent that maintains emulsion integrity
  • Its behaviour shifts between nonionic and cationic depending on pH, making it compatible with a broad range of surfactant systems.

Good to know: Compatible with a broad range of surfactant systems because its behaviour shifts between nonionic and cationic depending on pH.

Commercial specifications

  • Aqueous solution, typically 30% active content, though concentrations vary by manufacturer
  • Bulk liquid supply in IBC containers or drums

Other Names (Synonyms)

lauryldimethylamine oxide|Lauryl Dimethylamine-N-Oxide|1-Dodecanamine, N,N-dimethyl-, N-oxide|LDAO|Dodecyldimethylamine oxide|Ammonyx AO|Ammonyx LO|Empigen OB

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What are the physical properties of Lauramine oxide?

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℃

How is Lauramine oxide classified and handled safely? Learn More

Danger
GHS05· Corrosive GHS07· Irritant GHS09· Environmental Hazard

Hazard Statements

H302 Harmful if swallowed
H315 Causes skin irritation
H318 Causes serious eye damage
H319 Causes serious eye irritation

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.

Which trade and regulatory codes apply to Lauramine oxide?

HS Code 29299090
UN Number 3259
ADR Class 8
Packing Group II
Storage Class 11 - Combustible Solids
WGK (Germany) 2
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