Name:Trans-Ethyl crotonate 

Alias: (E)-crotonic acid ethyl ester; (E)-But-2-enoic acid ethyl ester;(E)-2-butenoic acid;

trans-2-butenoic acid ethyl ester

CAS:623-70-1
Properties:Colorless transparent liquid; MP:45;BP: 142-143°C

Density:0.918;

Refractive index: 1.4232-1.4272