Amines REACH

Tripropylamine

CAS Number
102-69-2
EC Number
203-047-7
Chemical Formula
C9H21N
Molecular Weight
143.27 g/mol
FEMA Number
FEMA 4247
Abbreviation
TPA

Description

Tripropylamine (CAS 102-69-2), also abbreviated as TPA, is a tertiary aliphatic amine used across pharmaceutical synthesis, agrochemical manufacturing, and polymer chemistry. It functions primarily as a catalyst and pH buffer. This chemical serves as a solvent in reactions requiring a non-nucleophilic base with moderate volatility. In pharmaceutical and fine chemical synthesis, it acts as a base catalyst or acid scavenger in condensation reactions.

Controlled basicity is critical to yield and purity during acylation processes. Agrochemical formulators use it to neutralize acidic herbicide and pesticide concentrates, improving stability and handling characteristics of the final formulation. In polymer and resin production, it serves as a curing catalyst and process aid. This is particularly useful in systems where a slower-acting tertiary amine is preferred over more reactive alternatives in the manufacturing cycle.

Lubricant and metalworking fluid manufacturers incorporate it as a pH stabilizer to extend fluid service life. This application helps reduce corrosion in metal-cutting applications and maintains the integrity of industrial fluids. The product is supplied as a clear liquid in standard drum and IBC quantities, with bulk tanker options available for high-volume industrial buyers. Technical grade is the most common commercial specification for this amine.

Purity is typically maintained at 99% or above to meet industrial requirements. It is also listed under FEMA 4247, which is relevant for flavor and fragrance procurement channels requiring documented ingredient status.

Other Names (Synonyms)

propyldi-n-propylamine|NPr3|N,N-dipropyl-1-propanamine|(n-C3H7)3N|Tri-n-propylamine|1-Propanamine, N,N-dipropyl-|06S624V3U2|TPA

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

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Physical Properties

Melting Point -93.5 °C
Boiling Point 156 °C
Density 0.7558 g/cm³ @ Temp: 20 °C
Flash Point 98 °F
Appearance colourless liquid
Color Clear colorless
Odor at 0.10 % in propylene glycol. fishy ammoniacal
Form Liquid
Water Solubility 2.6 g/L (20 ºC)
Vapor Pressure 2.9 mm Hg ( 20 °C)
Refractive Index n 20/D 1.416(lit.)
pH 11.4 (2.6g/l, H2O, 20℃)
Log P 0.9 at 25℃

Documentation

Safety & Handling Learn More

Danger
GHS02· Flammable GHS05· Corrosive GHS06· Toxic GHS07· Irritant

Hazard Statements

H226 Flammable liquid and vapor
H301 Toxic if swallowed
H311 Toxic in contact with skin
H314 Causes severe skin burns and eye damage

Precautionary Statements

P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
P233 Keep container tightly closed.
P240 Ground and bond container and receiving equipment.
P241 Use explosion-proof [electrical/ventilating/lighting/…] equipment.

Trade & Regulatory

HS Code 29211980
UN Number 2260
ADR Class 3
Packing Group III
Storage Class 3 - Flammable liquids
WGK (Germany) 2
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