N,N-Dimethylpropylamine (DMPA)

N,N-Dimethylpropylamine (DMPA), CAS 926-63-6, is a crucial, short-chain tertiary amine. It is a colorless, highly volatile liquid known for its powerful basicity and high catalytic activity. With its structure—two methyl groups and one propyl group attached to the nitrogen atom—DMPA functions effectively as a low-odor catalyst and a versatile intermediate, especially favored in applications requiring a balance of reactivity and volatility.

Basic Information of DMPA

CAS No.:	926-63-6
EC No.:	213-139-9
Linear Formula:	C5H13N
Molecular Weight:	87.16
Appearance:	Colorless, clear, volatile liquid
Odor:	Strong, characteristic amine odor (less pungent than some lower amines)
Melting Point:	-115.88°C (estimate)
Boiling Point:	65.85°C
Density:	0.6955
Solubility:	Miscible with water and most organic solvents.
Flash Point:	-10°C
RIDADR:	UN 2266 3/PG 2
Chemical Structure:

Application Overview

N,N-Dimethylpropylamine (DMPA) is strategically employed as a high-efficiency reagent and catalyst across several industrial applications:

• Polyurethane Foaming: DMPA is a highly effective tertiary amine catalyst used primarily to drive the blowing reaction (water-isocyanate reaction) in the production of flexible, rigid, and microcellular polyurethane foams, helping to control the foam's rise and density profile.

• Quaternary Salt Manufacturing: It serves as a fundamental precursor in the synthesis of various quaternary ammonium compounds. These derivatives are widely used as antistatic agents, fabric softeners, biocides, and corrosion inhibitors in the oilfield and water treatment industries.

• Epoxy and Coating Curing: Due to its strong basicity, DMPA acts as an efficient accelerator or hardener for certain epoxy resin systems, especially in powder coatings and adhesives, significantly reducing the required curing time and energy.

• Solvent and Neutralizing Agent: Its solubility and volatility make it suitable as a neutralizing agent in industrial process streams or as a specialty solvent where a volatile, easily removable base is required.

• Intermediate for Specialty Chemicals: It is used in the synthesis of other specialized chemicals, including certain pharmaceutical intermediates and UV stabilizer compounds.

• Volatile Amine Management: We utilize dedicated inert-gas blanketing systems and specialized storage vessels to prevent oxygen and moisture ingress, which can rapidly degrade volatile amines like DMPA. This preserves the product's reactivity and minimizes byproduct formation.

Hazards Classification

• GHS Classification: Flammable Liquid (GHS02), Acute Toxicity (GHS06), Skin Corrosion/Irritation (GHS05)

• Hazard Statements: Highly flammable liquid and vapor; harmful if swallowed, in contact with skin or if inhaled; causes severe skin burns and eye damage.

• UN Number: UN 2266

• Hazard Class: 3 (Flammable Liquids)

• Packing Group: II