The solubilities of 3, 9-dichloro-2, 4, 8, 10-tetraoxa-3, 9-diphosphaspiro [5.5] undecane-3, 9- dioxide from (303.15 to 311.35) K in dichloromethane and from (298.15 to 357.65) K in acetic acid, 3, 9-dihydroxy-2, 4, 8, 10-tetraoxa-3, 9-diphosphaspiro [5.5] undecane-3, 9- dioxide from (309.35 to 331.55) K in acetonitrile and from (295.75 to 319.15) K in acetone, 2, 4, 8, 10-tetraoxa-3, 9-dioxide-3, 9-diphosphaspiro [5.5] undecane-3, 9-melamine salt from ...