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REACH

Molybdenum sulfide

EC number: 235-721-1 | CAS number: 12612-50-9

Life Cycle description
Uses advised against

Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Administrative data

Link to relevant study record(s)

Description of key information

Five reliable data points were retained for sodium molybdate, covering two different invertebrates (D. magna and C. dubia), and acute effect levels ranging between 131 mg Mo/L and 2,847.5 mg Mo/L. For C. dubia, the lowest value was 1005.5 mg Mo/L, whereas the lowest value for D. magna was 131 mg Mo/L.; the latter former value of 131 mg Mo/L, using sodium molybdate dihydrate as test substance, is put forward for classification purposes.

Key value for chemical safety assessment

Fresh water invertebrates

Effect concentration:: 131 mg/L

Additional information

All reliable acute toxicity concentration levels for sodium molybdate are summarized below.

Species	Mo-salt	Endpoint		mg Mo/L	pH	Reference
D. magna	Na₂MoO₄.2H₂O	48h-LC₅₀	Nominal	131	7.1	HRC, 1994
D. magna	Na₂MoO₄.2H₂O	48h-LC₅₀	Nominal	2847.5	7.5 ± 1	Diamantino et al, 2000
D. magna	Na₂MoO₄.2H₂O	48h-LC₅₀	Measured	1776.6 1680.4	8.05	GEI, 2009
D. magna	Na₂MoO₄.2H₂O	48h-LC₅₀	Measured	2729.4	8.47	Rodriguez, 2007
C. dubia	Na₂MoO₄.2H₂O	48h-LC₅₀	Measured	1005.5 1024.6	8.05	GEI, 2009

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