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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Ecotoxicological Summary

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Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
no hazard identified

Marine water

Hazard assessment conclusion:
no hazard identified

STP

Hazard assessment conclusion:
no hazard identified

Sediment (freshwater)

Hazard assessment conclusion:
no hazard identified

Sediment (marine water)

Hazard assessment conclusion:
no hazard identified

Hazard for air

Air

Hazard assessment conclusion:
no hazard identified

Hazard for terrestrial organisms

Soil

Hazard assessment conclusion:
no hazard identified

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
insufficient hazard data available (further information necessary)

Additional information

Conclusion on classification

Conclusion on classification

Classification related key information

 

Biodegradation:

Biodegradation is not relevant for inorganic substances like diniobium pentaoxide (CAS 1313-96-8).

 

Bioaccumulation:

Elemental diniobium pentaoxide (CAS 1313-96-8) is inert and cannot be metabolised, thus it cannot be accumulated in living being.

 

Aquatic acute toxicity:

ErC50 (72 h) > 100 mg/L (nominal) for Raphidocelis subcapitata (OECD 201)

 

Aquatic chronic toxicity:

NOEC (21 d) ≥ 10 mg/L (nominal) for Daphnia magna (OECD 211, static renewal test)

 

No intrinsic toxic properties by the test item towards Raphidocelis subcapitata (OECD 201, static. Observed effects resulting into an ErC10 of 4.03 mg/L are attributed to physical effects)

 

A long-term test with fish (OECD 210) is ongoing (CCH-D-2114517435-52-01/F). Reasons for the delay are summarized in the statements attached in IUCLID section 6.1.2 (‘Status of Fish early life stage toxicity Tests (OECD 210) with Niobium pentoxide, ECHA decision number: CCH-D-2114517435-52-01/F).

 

 

Classification according to CLP

Acute toxicity data for diniobium pentaoxide (CAS 1313-96-8) are available for one trophic level (freshwater algae) and chronic toxicity data are available for two trophic levels (freshwater algae and aquatic invertebrates). Neither acute effects toward algae (ErC50 (72 h) > 100 mg/L (nominal)) nor chronic effects towards aquatic invertebrates (NOEC (21 d) > 10 mg/L (nominal)) were detected. The effects (resulting into an ErC10 (72 h) of 4.03 mg/L (nominal)) observed in the freshwater algae study are attributed to physical effects and not to intrinsic toxic properties of the substance, as explained in detail in IUCLID section 6.1.5. Therefore, the substance is not considered to cause any acute or chronic toxic effects on aquatic species up to its solubility limit and does not need to be classified for environmental toxicity according to the consolidated version of Regulation (EC) No 1272/2008 and further amendments (ATPs).

 

This conclusion will be re-evaluated, based on the results of the ongoing long-term test with fish (OECD 210, CCH-D-2114517435-52-01/F). Reasons for the delay are summarized in the statements attached in IUCLID section 6.1.2 (Status of Fish early life stage toxicity Tests (OECD 210) with Niobium pentoxide, ECHA decision number: CCH-D-2114517435-52-01/F).