Methanesulfonic acid [Chemical Name] Methanesulfonic acid [Cas No.] 75-75-2 [Molecular formula]Â CH3SO3H [Molecular weight]Â 96.1 [Appearance] Colorless transparent liquid [Packing] Â Polyethylene plastic drum 30 kg/drum, 250kg/drum, or customized. [standard]Â Q/HBXH20-2011 [Property]&[Features]Â Freezing point20 C,dissolving in water, slight dissolving in benzene, insoluble in hydrocarbon