Heavy metal.

[MoO3Na]
Test organisms;
Protozoa: Colpidium campylum (ref. ID; 6081)

[Sodium Molybdate(VI) Dihydrate] CAS[10102-40-6]
Chemical formula; Na2MoO4/2H2O
Test organisms;
Oligochaeta: Tubifex tubifex (ref. ID; 6968)