Malononitrile
Organic compound with formula CH2(CN)2 / From Wikipedia, the free encyclopedia
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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.
Quick Facts Names, Identifiers ...
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Names | |||
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IUPAC name
Malononitrile[1] | |||
Preferred IUPAC name
Propanedinitrile[1] | |||
Other names
Malonodinitrile, Cyanoacetonitrile, Dicyanomethane, Malonic dinitrile[2] | |||
Identifiers | |||
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3D model (JSmol) |
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773697 | |||
ChEBI | |||
ChemSpider |
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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[2] | ||
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)[2][clarification needed] | |||
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[2] | ||
REL (Recommended) |
TWA 3 ppm (8 mg/m3)[2] | ||
IDLH (Immediate danger) |
N.D.[2] | ||
Related compounds | |||
Related alkanenitriles |
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Related compounds |
DBNPA | ||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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