Crystal data for CaNa-iminodisulphonate, trihydrate

Calcium sodium iminodisulphonate trihydrate was first described by Divers and Haga [J. Chem. Soc. 943–968, (1892)]. It has recently been found as one of several crystalline products resulting from the removal of sulphur dioxide from flue gas. It has not so far been included in the ICCD powder diffraction file.