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Skeletal formula of aminoethylpiperazine
Ball-and-stick model of the aminoethylpiperazine molecule
IUPAC name
Other names
2-(1-Piperazinyl)ethylamine, AEP, N-AEP, N-(2-Aminoethyl)piperazine, 2-Piperazinoethylamine, 1-(2-Aminoethyl)piperazine, 1-Piperazine ethanamine, 1-Aminoethylpiperazine
3D model (JSmol)
ECHA InfoCard 100.004.920
EC Number 205-411-0
Molar mass 129.207 g·mol−1
Appearance Colourless to yellowish liquid
Density 0.984 g/cm3 at 20 °C
Melting point −19 °C (−2 °F; 254 K)
Boiling point 222 °C (432 °F; 495 K)
Fully miscible
Vapor pressure 0.076 mmHg @ 20 °C
Main hazards harmful, corrosive, sensitizing
R-phrases (outdated) R21 R22 R43 R52 R53
S-phrases (outdated) S26 S36 S37 S39 S45 S61
NFPA 704
Flammability code 2: Must be moderately heated or exposed to relatively high ambient temperature before ignition can occur. Flash point between 38 and 93 °C (100 and 200 °F). E.g. diesel fuelHealth code 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g. chloroformReactivity code 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no codeNFPA 704 four-colored diamond
Flash point 93 °C (199 °F; 366 K)
315 °C (599 °F; 588 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Aminoethylpiperazine is a derivative of piperazine. This ethyleneamine contains three nitrogen atoms; one primary, one secondary and one tertiary. It is a corrosive liquid and can cause second or third degree burns. Aminoethylpiperazine can also cause pulmonary edema as a result of inhalation. Uses include inhibition of corrosion, epoxy curing, surface activation, and as an asphalt additive. When used as an epoxy resin curing agent, it is usually used in conjunction with other amines as an accelerator as it only has 3 amine hydrogens for cross-linking.

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