Tetramethylethylenediamine
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Tetramethylethylenediamine (TMEDA or TEMED) is a chemical compound with the formula (CH3)2NCH2CH2N(CH3)2. This species is derived from ethylenediamine by replacement of the four amine hydrogens with four methyl groups. It is a colorless liquid, although old samples often appear yellow. Its odor is similar to that of rotting fish.[4]
Quick Facts Names, Identifiers ...
Names | |
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Preferred IUPAC name
N,N,N′,N′-Tetramethylethane-1,2-diamine[1] | |
Identifiers | |
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3D model (JSmol) |
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Abbreviations | TMEDA, TEMED |
1732991 | |
ChEBI | |
ChemSpider |
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ECHA InfoCard | 100.003.405 |
EC Number |
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2707 | |
MeSH | N,N,N',N'-tetramethylethylenediamine |
PubChem CID |
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RTECS number |
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UNII | |
UN number | 2372 |
CompTox Dashboard (EPA) |
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Properties | |
C6H16N2 | |
Molar mass | 116.208 g·mol−1 |
Appearance | Colorless liquid |
Odor | Fishy, ammoniacal |
Density | 0.7765 g mL−1 (at 20 °C) |
Melting point | −58.6 °C; −73.6 °F; 214.5 K |
Boiling point | 121.1 °C; 249.9 °F; 394.2 K |
Miscible | |
Acidity (pKa) | 8.97 |
Basicity (pKb) | 5.85 |
Refractive index (nD) |
1.4179 (20 °C)[2] |
Hazards | |
GHS labelling: | |
Danger | |
H225, H302, H314, H332 | |
P210, P280, P305+P351+P338, P310 | |
NFPA 704 (fire diamond) | |
Flash point | 20 °C (68 °F; 293 K) |
Explosive limits | 0.98–9.08% |
Lethal dose or concentration (LD, LC): | |
LD50 (median dose) |
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Related compounds | |
Related amines |
Triethylenetetramine |
Related compounds |
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Supplementary data page | |
Tetramethylethylenediamine (data page) | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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