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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Ecotoxicological information

Short-term toxicity to fish

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Administrative data

Link to relevant study record(s)

Description of key information

One reliable data point was retained for molybdenum trioxide. The lowest value for MoO3 is  577 mg Mo/L (for the fish P. promelas , Kimball (1978)). 

Key value for chemical safety assessment

Fresh water fish

Fresh water fish
Effect concentration:
577 mg/L

Additional information

One reliable acute toxicity concentration level was obtained with MoO3 and is summarized below. The effect level (the 96h-LC50) is expressed as (mg Mo)/L, and is 577 mg Mo/L, and this for the fish P. promelas (Kimball, 1978)

Species

Mo-salt

Endpoint

 

mg Mo/L

pH

Reference

P. promelas

MoO3

96h-LC50

Measured

577

678

8.56

Kimball, 1978