Malononitrile
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| Names | |||
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| IUPAC name
Malononitrile | |||
| Preferred IUPAC name
Propanedinitrile | |||
| Other names
Malonodinitrile, Cyanoacetonitrile, Dicyanomethane, Malonic dinitrile | |||
| Identifiers | |||
3D model (JSmol) |
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| 773697 | |||
| ChEBI | |||
| ChemSpider | |||
| ECHA InfoCard | 100.003.368 | ||
| EC Number |
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| 1303 | |||
| MeSH | dicyanmethane | ||
PubChem CID |
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| RTECS number |
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| UNII | |||
| UN number | 2647 | ||
CompTox Dashboard (EPA) |
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| Properties | |||
| CH2(CN)2 | |||
| Molar mass | 66.063 g·mol−1 | ||
| Appearance | Colourless or white solid | ||
| Density | 1.049 g cm−3 | ||
| Melting point | 32 °C; 89 °F; 305 K | ||
| Boiling point | 220.1 °C; 428.1 °F; 493.2 K | ||
| 13% (20 °C) | |||
| Thermochemistry | |||
Heat capacity (C) |
110.29 J K−1 mol−1 | ||
Std molar entropy (S⦵298) |
130.96 J K−1 mol−1 | ||
Std enthalpy of formation (ΔfH⦵298) |
187.7 to 188.1 kJ mol−1 | ||
Std enthalpy of combustion (ΔcH⦵298) |
−1,654.0 to −1,654.4 kJ mol−1 | ||
| Hazards | |||
| GHS labelling: | |||
| Danger | |||
| H301, H311, H331, H410 | |||
| P261, P273, P280, P301+P310, P311 | |||
| Flash point | 86 °C (187 °F; 359 K) | ||
| Lethal dose or concentration (LD, LC): | |||
LD50 (median dose) |
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| NIOSH (US health exposure limits): | |||
PEL (Permissible) |
none | ||
REL (Recommended) |
TWA 3 ppm (8 mg/m3) | ||
IDLH (Immediate danger) |
N.D. | ||
| Related compounds | |||
Related alkanenitriles |
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Related compounds |
Malonic acid | ||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references | |||
Malononitrile is an organic compound nitrile with the formula CH2(CN)2. It is a colorless or white solid, although aged samples appear yellow or even brown. It is a widely used building block in organic synthesis.