Identification Na2S·9H2O M = 78,04 g/mol CAS [27610-45-3] EC number: 608-114-8 Taric code: 2830 10 00 Packaging 500 g Physical data Spec. Density: ~ 1,43 g/cm3Bulk density: ~ 830 kg/m3Melting point: 920 ºC (anhydrous substance)