Aminoethylpiperazine

CAS: 140-31-8

Overview

Aminoethylpiperazine (CAS 140-31-8 ), commonly abbreviated as AEP, is a bifunctional amine building block carrying both a primary amine and a piperazine ring. This dual reactivity makes it a sought-after intermediate for curing and cross-linking.

It is used for biocidal applications across several industrial sectors. In epoxy coatings and adhesives, AEP functions as a curing agent, reacting with epoxy resins to build cross-linked networks with improved flexibility and adhesion.

Water treatment formulations use AEP as a building block for synthesizing polymeric biocides and scale inhibitors. These control microbial growth and deposit formation in industrial water systems and polyurethane production.

In polymer production, it serves as a chain extender or reactive modifier, influencing final mechanical properties and network density. Sealant and elastomer manufacturers incorporate AEP to tune cure speed in specialty formulations.

Aminoethylpiperazine is supplied as a liquid at standard commercial concentrations. Technical grade is the primary market offering, with purity specifications typically at 98% or higher depending on the specific requirement.

Packaging ranges from drums to IBC containers, suited to both formulators sourcing in moderate volumes and industrial buyers requiring bulk quantities. This ensures reliable supply chains for various manufacturing scales.

Physical Properties

Melting Point	-19 °C
Boiling Point	222 °C
Density	0.9837 g/cm³
Flash Point	200 °F
Appearance	N-Aminoethypiperazine is a combustible and corrosive aliphatic amine It is a colorless to light yellow liquid
Color	Clear colorless to slightly yellow
Form	Liquid
Water Solubility	soluble
Vapor Pressure	0.05 mm Hg ( 20 °C)
Refractive Index	n 20/D 1.500
pH	12 (100g/l, H2O, 20℃)
Log P	-1.48 at 20℃

Safety & Handling

Danger GHS05 GHS07 GHS06 Hazard Statements H227 Combustible liquid H302 Harmful if swallowed H311 Toxic in contact with skin H312 Harmful in contact with skin H314 Causes severe skin burns and eye damage H317 May cause an allergic skin reaction H318 Causes serious eye damage H412 Harmful to aquatic life with long lasting effects Precautionary Statements P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking. P260 Do not breathe dust/fume/gas/mist/vapours/spray. P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P262 Do not get in eyes, on skin, or on clothing. P264 Wash … thoroughly after handling. P270 Do not eat, drink or smoke when using this product. P272 Contaminated work clothing should not be allowed out of the workplace. P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P316 Get emergency medical help immediately. P317 Get emergency medical help. P321 Specific treatment (see … on this label). P330 Rinse mouth. P363 Wash contaminated clothing before reuse. P403 Store in a well-ventilated place. P405 Store locked up. 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. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P333+P317 Get emergency medical help. P361+P364 Take off immediately all contaminated clothing and wash it before reuse. P362+P364 Take off contaminated clothing and wash it before reuse. P370+P378 Use … for extinction. P301+P330+P331 Rinse mouth. Do NOT induce vomiting. P302+P361+P354 IF ON SKIN: Take off immediately all contaminated clothing. Rinse skin with water/shower. 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	29335995
UN Number	2815
ADR Class	8
Packing Group	III
WGK (Germany)	2

Other Names

Industries

Water Treatment Coatings, Adhesives, Sealants & Elastomers Plastics & Polymers