trans-1,4-dichloro-2-butene [ 110-57-6 ]
                Specification: 94%min GC ,Colorless liquid
| mp | 1-3 °C(lit.) | 
| bp | 74-76 °C40 mm Hg(lit.) | 
| density | 1.183 g/mL at 25 °C(lit.) | 
| vapor pressure | 10 mm Hg ( 20 °C) | 
| refractive index | n | 
| Fp | 129 °F | 
| storage temp. | 2-8°C |