Synonyms: 1,3,5-Triazine-2,4,6(1H,3H,5H)-trione,1,3-dichloro-, calcium salt (9CI); Calcium,bis(dichloro-s-triazine-2,4,6(1H,3H,5H)-trionato)- (7CI);s-Triazine-2,4,6(1H,3H,5H)-trione, 1,3-dichloro-, calcium salt (8CI); Calciumdi(dichlorocyanurate); Calcium dichlorocyanurate