Malononitrile

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
Malononitrile 109-77-3High Quality
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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:
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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