Lanthanum chloride heptahydrate Lanthanum chloride heptahydrate Synonyms: Lanthanum chloride, hydrated; LanthanumchloridehydrateREOwhitextl; lanthanum chloride crystalline; Lanthanum(III) chloride hydrate (99.999% La) (REO); Lanthanum chloride CAS NO.: 10025-84-0 Formula: La+3.3[Cl-].7[H2O] Weight: 371.37096