Ethylenediamine
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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.[6] Ethylenediamine is the first member of the so-called polyethylene amines.
Quick Facts Names, Identifiers ...
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Names | |||
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Preferred IUPAC name
Ethane-1,2-diamine[1] | |||
Other names
Edamine,[2] 1,2-Diaminoethane, 'en' when a ligand | |||
Identifiers | |||
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3D model (JSmol) |
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Abbreviations | en | ||
605263 | |||
ChEBI | |||
ChEMBL | |||
ChemSpider |
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ECHA InfoCard | 100.003.154 | ||
EC Number |
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1098 | |||
KEGG |
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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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Properties | |||
C2H8N2 | |||
Molar mass | 60.100 g·mol−1 | ||
Appearance | Colorless liquid[3] | ||
Odor | Ammoniacal[3] | ||
Density | 0.90 g/cm3[3] | ||
Melting point | 8 °C (46 °F; 281 K)[3] | ||
Boiling point | 116 °C (241 °F; 389 K)[3] | ||
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 | ||
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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) | |||
Flash point | 34 °C (93 °F; 307 K)[3] | ||
385 °C (725 °F; 658 K)[3] | |||
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)[4] | ||
NIOSH (US health exposure limits): | |||
PEL (Permissible) |
TWA 10 ppm (25 mg/m3)[5] | ||
REL (Recommended) |
TWA 10 ppm (25 mg/m3)[5] | ||
IDLH (Immediate danger) |
1000 ppm[5] | ||
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).
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