Consistent supply, top quality,competitive price Crotonic acid, trans-2-Butenoic acidDensity:1.027Melting point:69-73 degreesboiling ... , cosmetics(facial mask material);Export market:europe,America,Asia. Crotonic acid, trans-2-Butenoic acid,99.5%,raw material for Cosmetics, Resin, Coating ...