stilbene

Either of two geometric isomers of ethene substituted with two phenyl groups, C₁₄H₁₂. The trans-isomer is a colorless crystalline solid used in the manufacture of dyes and optical bleaches and as a phosphor.

A colorless compound, C₆H₅CH:CHC₆H₅, prepared by the action of heated lead oxid on toluene. It crystallizes in large monoclinic plates, melts at 124° C., and boils at 306–307° C. Also called toluylene and symmetrical diphenylethylene.

A hydrocarbon, C14H12, produced artificially in large, fine crystals; — called also diphenyl ethylene, toluylene, etc.

Either of two isomeric hydrocarbons, diphenylethylene, but especially the trans isomer, used in the manufacture of dyes and many other compounds.