CAS : 16731-55-8 Formula : K2S2O5 mol : 222.31 Boiling point: Melting point : 190°C Density : P&H codes : H318P280,P305+P351+P338+P310GHS05 Causes serious eye damage. WGK 1: slightly water endangering ADR: not subjected to ADR Class : Packing group :