Fumaronitrile

Synonym(s):trans-1,2-Dicyanoethylene

CAS NO.：764-42-1
Empirical Formula: C4H2N2
Molecular Weight: 78.07
MDL number: MFCD00001928
EINECS: 212-122-3
SAFETY DATA SHEET (SDS)
Update Date: 2026-01-13 11:13:04

What is Fumaronitrile?

Chemical properties

brown crystalline solid. Soluble in benzene, ethanol, ether. Easy sublimation.

The Uses of Fumaronitrile

Fumaronitrile is useful as intermediates in the production of pharmaceuticals, industrial chemicals and various other useful compounds and as a starting monomer for polymer synthesis. It is the optimal candidate to present excellent flame-retardant effect by forming a SN-like structure after polymerization. More importantly, with the reaction of unsaturated bond, free nitrile groups are anchored in the polymer chains and the spontaneous reaction with Li anode is therefore inhibited.

Preparation

Fumaronitrile can be prepared from maleic anhydride in three steps.

General Description

Fumaronitrile appears as needles or brown crystalline solid. (NTP, 1992)

Air & Water Reactions

Insoluble in water.

Reactivity Profile

FUMARONITRILE can react with strong acids, strong bases, strong oxidizing agents and strong reducing agents.

Fire Hazard

Flash point data for FUMARONITRILE are not available. FUMARONITRILE is probably combustible.

Properties of Fumaronitrile

Melting point:	93-95 °C (lit.)
Boiling point:	186 °C (lit.)
Density	1.249 g/cm³ (20 ºC)
refractive index	1.4920 (589.3 nm 20℃)
Flash point:	186°C
storage temp.	Sealed in dry,Room Temperature
solubility	ethanol: soluble50 (mg/mL; colorless to yellow)
form	Crystals
color	White
BRN	969245
Stability:	Stable. Incompatible with strong acids, strong bases, strong oxidizing agents, strong reducing agents.
CAS DataBase Reference	764-42-1(CAS DataBase Reference)
EPA Substance Registry System	Fumaronitrile (764-42-1)