1, 4-butane sultone CAS No.: 1633-83-6 Serial number G002 Trade name 1, 4-butane sultone Molecular formula C4H8O3S CAS No. 1633-83-6 Assay 99% ( min) Appearance Colorless to yellowish transparent liquid Water-solubility Hardly soluble in water Application It is the homologue of 1, 3-propane sultone , and both of them are mainchemical intermediates, which is used the synthesis of sensititizingdyes, anionic Gemini surfactants, and secondary lithium ion solution.