Ethylenediamine
Ethylenediamine (abbreviated as en when a ligand) is the organic compound with the formula C2H4(NH2)2. This colorless liquid with an ammonia-like odor is a basic amine. It is a widely used building block in chemical synthesis, with approximately 500,000 tonnes produced in 1998. Ethylenediamine is the first member of the so-called polyethylene amines.
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| Names | |||
|---|---|---|---|
| Preferred IUPAC name
Ethane-1,2-diamine | |||
| Other names
Edamine, 1,2-Diaminoethane, 'en' when a ligand | |||
| Identifiers | |||
3D model (JSmol) |
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| Abbreviations | en | ||
| 605263 | |||
| ChEBI | |||
| ChEMBL | |||
| ChemSpider | |||
| ECHA InfoCard | 100.003.154 | ||
| EC Number |
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| 1098 | |||
| KEGG | |||
| MeSH | ethylenediamine | ||
PubChem CID |
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| RTECS number |
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| UNII | |||
| UN number | 1604 | ||
CompTox Dashboard (EPA) |
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SMILES
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| Properties | |||
| C2H8N2 | |||
| Molar mass | 60.100 g·mol−1 | ||
| Appearance | Colorless liquid | ||
| Odor | Ammoniacal | ||
| Density | 0.90 g/cm3 | ||
| Melting point | 8 °C (46 °F; 281 K) | ||
| Boiling point | 116 °C (241 °F; 389 K) | ||
| miscible | |||
| log P | −2.057 | ||
| Vapor pressure | 1.3 kPa (at 20 °C) | ||
Henry's law constant (kH) |
5.8 mol Pa−1 kg−1 | ||
Magnetic susceptibility (χ) |
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Refractive index (nD) |
1.4565 | ||
| Thermochemistry | |||
Heat capacity (C) |
172.59 J K−1 mol−1 | ||
Std molar entropy (S⦵298) |
202.42 J K−1 mol−1 | ||
Std enthalpy of formation (ΔfH⦵298) |
−63.55 to −62.47 kJ mol−1 | ||
Std enthalpy of combustion (ΔcH⦵298) |
−1.8678 to −1.8668 MJ mol−1 | ||
| Hazards | |||
| GHS labelling: | |||
| Danger | |||
| H226, H302, H311, H314, H317, H332, H334, H412 | |||
| P101, P102, P260, P273, P280, P305+P351+P338, P308+P313, P405, P501 | |||
| NFPA 704 (fire diamond) |
3
2
0 | ||
| Flash point | 34 °C (93 °F; 307 K) | ||
| 385 °C (725 °F; 658 K) | |||
| Explosive limits | 2.7–16% | ||
| Lethal dose or concentration (LD, LC): | |||
LD50 (median dose) |
500 mg/kg (oral, rat) 470 mg/kg (oral, guinea pig) 1160 mg/kg (oral, rat) | ||
| NIOSH (US health exposure limits): | |||
PEL (Permissible) |
TWA 10 ppm (25 mg/m3) | ||
REL (Recommended) |
TWA 10 ppm (25 mg/m3) | ||
IDLH (Immediate danger) |
1000 ppm | ||
| Related compounds | |||
Related alkanamines |
1,2-Diaminopropane, 1,3-Diaminopropane | ||
Related compounds |
Ethylamine, Ethylenedinitramine | ||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references | |||
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