General Information : Product Code II0029 Product Name 1,4-Diiodobutane Synonyms 1,4-Diiodobutane; Tetramethylene iodide; BUTANE, 1,4-DIIODO-; Tetramethylene diiodide; 1,4-Diodobutane CAS No. 628-21-7 ECS No. 211-032-1 HSN Code – Chemical Formula C7H6ClI Molecular Weight 309.92 Structure Product Category Intermediate, Cross-Linking Agent Chemical Properties : Appearance Yellow to brown / red colour clear liquid. Gravity (at 25 °C) Between 2.31 to 2.35 gm / ml Boiling Point 125 ° C (at 12 mm/Hg –Lit. ) Moisture Not more than 0.3% Assay Not less than 99%