Amines REACH

N-Propylethanolamine

CAS Number
16369-21-4
EC Number
240-426-6

What is N-Propylethanolamine?

N-Propylethanolamine (CAS 16369-21-4), also referred to commercially as PMEA or mono-n-propyl monoethanolamine, is a bifunctional amino alcohol combining amine and hydroxyl reactivity in a single molecule.

Where is N-Propylethanolamine used?

  • Industrial and personal care formulations: pH buffer, corrosion inhibitor and emulsifier
  • Metalworking fluids and lubricant concentrates: corrosion protection for ferrous and non-ferrous metals
  • It stabilizes oil-in-water emulsions at working concentrations.
  • Coatings and resin systems: neutralizing agent for acid-functional resins, improving dispersion stability and film formation in waterborne systems
  • Adhesives and sealants: reactive intermediate or curing modifier where controlled amine functionality is required
  • Personal care: pH adjuster in emulsion-based products

Good to know: This moderate, less volatile amine is often preferred over triethanolamine in specific formulations. Buyers sourcing for personal care applications should confirm purity specifications and ensure all supplier documentation meets cosmetic ingredient standards before use.

Commercial specifications

  • Drum and IBC quantities suited to industrial procurement volumes

Other Names (Synonyms)

Ethanol, 2-(propylamino)-|2-(propylamino)ethanol|mono-n-propyl monoethanolamine (pmea)

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What are the physical properties of N-Propylethanolamine?

Melting Point 29.84°C (estimate)
Boiling Point 89-90 °C @ Press: 19-20 Torr
Density 0.9005 g/cm³
Flash Point 178 °F
Color Colorless to Almost colorless
Form clear liquid
Refractive Index n 20/D 1.4415(lit.)

How is N-Propylethanolamine classified and handled safely? Learn More

Danger
GHS05· Corrosive GHS07· Irritant

Hazard Statements

H302 Harmful if swallowed
H312 Harmful in contact with skin
H314 Causes severe skin burns and eye damage
H332 Harmful if inhaled

Precautionary Statements

P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash … thoroughly after handling.
P270 Do not eat, drink or smoke when using this product.

Which trade and regulatory codes apply to N-Propylethanolamine?

HS Code 2922190090
UN Number 2735
ADR Class 8
Packing Group II
Storage Class 8A - Combustible corrosive hazardous materials
WGK (Germany) 3
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