.beta.,.beta.'-Bis(cyanoethyl) ether .beta.,.beta.'-Dicyanodiethyl ether .beta.,.beta.'-Oxydipropionitrile 1656-48-0 3,3'-Oxydipropionitrile Bis(2-cyanoethyl) ether Ether, bis(2-cyanoethyl) NSC7769 Propanenitrile, 3,3'-oxybis- Propionitrile, 3,3'-oxydi- WLN: NC2O2CN