... 1,4-BUTYLENE DIBROMIDE;1,4-BUTYLENE BROMIDE;1,4-DIBROMOBUTANE;TETRAMETHYLENDIBROMID;TETRAMETHYLENE BROMIDE mp −20 °C(lit.)bp 63-65 °C6 mm Hg(lit.)density 1 ... mL at 25 °C(lit.)refractive index n20/D 1.519(lit.)Fp >230 °FWater Solubility immiscibleBRN 1071199Stability: ... )NIST Chemistry ReferenceButane, 1,4-dibromo-(110-52-1)EPA Substance Registry SystemButane, 1,4-dibromo-(110-52-1)Hazard Codes T,Xi ...