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Malononitrile

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  Post Date: Oct 11,2018
  Expiry Date: Oct 11,2019
  Detailed Description: Cas No. :109-77-3 Payment Method: L/C T/T D/A D/P
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Malononitrile, also propanedinitrile, is a nitrile, with formula CH2(CN)2. Malononitrile is relatively acidic, with an pKa of 11 in water.[1] This allows it to be used in the Knoevenagel condensation, for example in the preparation of CS gas:

In related chemistry, malononitrile is a suitable starting material for the Gewald reaction, where the nitrile condenses with a ketone or aldehyde in the presence of elemental sulfur and a base to produce a 2-aminothiophene.[2]


Malononitrile


IUPAC name[hide]
propanedinitrile
Other names[hide]
malonic acid dinitrile
Identifiers
CAS number 109-77-3 Y
Jmol-3D images Image 1
SMILES
[show]
N#CCC#N
InChI
[show]
InChI=1/C3H2N2/c4-2-1-3-5/h1H2
Properties
Molecular formula C3H2N2
Molar mass 66.06 g/mol
Appearance crystal
Density 1.1910 g/mL
Melting point
32 °C
Boiling point
220 °C
Solubility in water 13%
Hazards
Main hazards T / N

  CAS Registry Number:

109-77-3
  Synonyms: ;Dicyanomethane;Propanedinitrile;MDN;Malonitrile;Malonodinitrile;N-(4-Fluorobenzoyl)piperidine;Cyanoacetonitrile;
  Molecular Formula: C3H2N2
  Molecular Weight: 66.0614
  Molecular Structure: 109-77-3 Malononitrile
  Hazard Symbols:  T:Toxic;
 N:Dangerous for the environment;
  Risk Codes: R23/24/25:;
R50/53:;
  Safety Description: S23:;
S27:;
S45:;
S60:;
S61:;

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