![]() | |
![]() | |
Names | |
---|---|
Preferred IUPAC name
2-(Piperazin-1-yl)ethan-1-amine | |
Other names
2-(1-Piperazinyl)ethylamine, AEP, N-AEP, N-(2-Aminoethyl)piperazine, 2-Piperazinoethylamine, 1-(2-Aminoethyl)piperazine, 1-Piperazine ethanamine, 1-Aminoethylpiperazine
| |
Identifiers | |
3D model (
JSmol)
|
|
ChEMBL | |
ChemSpider | |
ECHA InfoCard | 100.004.920 |
EC Number |
|
PubChem
CID
|
|
RTECS number |
|
UNII | |
UN number | 2815 |
CompTox Dashboard (
EPA)
|
|
| |
| |
Properties | |
C6H15N3 | |
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) |
miscible | |
Vapor pressure | 0.076 mmHg @ 20 °C |
Hazards | |
Occupational safety and health (OHS/OSH): | |
Main hazards
|
harmful, corrosive, sensitizing |
GHS labelling: | |
![]() ![]() | |
Danger | |
H302, H312, H314, H317, H412 | |
P260, P261, P264, P270, P272, P273, P280, P301+P312, P301+P330+P331, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P310, P312, P321, P322, P330, P333+P313, P363, P405, P501 | |
NFPA 704 (fire 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).
|
Aminoethylpiperazine (AEP) is a derivative of piperazine. This ethyleneamine contains three nitrogen atoms; one primary, one secondary and one tertiary. It is a corrosive organic liquid and can cause second or third degree burns. Aminoethylpiperazine can also cause pulmonary edema as a result of inhalation. It is REACH and TSCA registered. [1]
Ethylene dichloride is reacted with ammonia as a main method of production. This process produces various ethylene amines which can then be purified by distillation. These include ethylenediamine, diethylenetriamine, triethylenetetramine, tetraethylenepentamine, other higher homologues and aminoethyl piperazine. [2] [3] AEP is also manufactured by reacting ethylenediamine or ethanolamine/ ammonia mixtures over a catalyst.
A key use of AEP is as an epoxy curing agent. [4] 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. The tertiary amine on the molecule acts as an accelerator and the other three amine hydrogens allow sites for crosslinking the epoxy. [5] This then allows coating systems to be formulated that prevent corrosion of steel and other substrates. [6] Novolac resins may also be cured by this material and blends. [7]
Uses include inhibition of corrosion, surface activation, and as an asphalt additive. As AEP is alkaline and carbon dioxide is weakly acidic, it has been researched as a carbon dioxide sequestrant. [8] This is part of ongoing research in Carbon capture and storage. [9] [10]
The toxicology has been extensively studied and is well understood. [11] [12]
{{
cite book}}
: CS1 maint: location missing publisher (
link)
![]() | |
![]() | |
Names | |
---|---|
Preferred IUPAC name
2-(Piperazin-1-yl)ethan-1-amine | |
Other names
2-(1-Piperazinyl)ethylamine, AEP, N-AEP, N-(2-Aminoethyl)piperazine, 2-Piperazinoethylamine, 1-(2-Aminoethyl)piperazine, 1-Piperazine ethanamine, 1-Aminoethylpiperazine
| |
Identifiers | |
3D model (
JSmol)
|
|
ChEMBL | |
ChemSpider | |
ECHA InfoCard | 100.004.920 |
EC Number |
|
PubChem
CID
|
|
RTECS number |
|
UNII | |
UN number | 2815 |
CompTox Dashboard (
EPA)
|
|
| |
| |
Properties | |
C6H15N3 | |
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) |
miscible | |
Vapor pressure | 0.076 mmHg @ 20 °C |
Hazards | |
Occupational safety and health (OHS/OSH): | |
Main hazards
|
harmful, corrosive, sensitizing |
GHS labelling: | |
![]() ![]() | |
Danger | |
H302, H312, H314, H317, H412 | |
P260, P261, P264, P270, P272, P273, P280, P301+P312, P301+P330+P331, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P310, P312, P321, P322, P330, P333+P313, P363, P405, P501 | |
NFPA 704 (fire 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).
|
Aminoethylpiperazine (AEP) is a derivative of piperazine. This ethyleneamine contains three nitrogen atoms; one primary, one secondary and one tertiary. It is a corrosive organic liquid and can cause second or third degree burns. Aminoethylpiperazine can also cause pulmonary edema as a result of inhalation. It is REACH and TSCA registered. [1]
Ethylene dichloride is reacted with ammonia as a main method of production. This process produces various ethylene amines which can then be purified by distillation. These include ethylenediamine, diethylenetriamine, triethylenetetramine, tetraethylenepentamine, other higher homologues and aminoethyl piperazine. [2] [3] AEP is also manufactured by reacting ethylenediamine or ethanolamine/ ammonia mixtures over a catalyst.
A key use of AEP is as an epoxy curing agent. [4] 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. The tertiary amine on the molecule acts as an accelerator and the other three amine hydrogens allow sites for crosslinking the epoxy. [5] This then allows coating systems to be formulated that prevent corrosion of steel and other substrates. [6] Novolac resins may also be cured by this material and blends. [7]
Uses include inhibition of corrosion, surface activation, and as an asphalt additive. As AEP is alkaline and carbon dioxide is weakly acidic, it has been researched as a carbon dioxide sequestrant. [8] This is part of ongoing research in Carbon capture and storage. [9] [10]
The toxicology has been extensively studied and is well understood. [11] [12]
{{
cite book}}
: CS1 maint: location missing publisher (
link)