boron nitride (hexagonal)

Short-term toxicity to aquatic invertebrates

Link to relevant study record(s)

Reference

Endpoint:

short-term toxicity to aquatic invertebrates

Data waiving:

study scientifically not necessary / other information available

Justification for data waiving:

the study does not need to be conducted because the substance is highly insoluble in water, hence indicating that aquatic toxicity is unlikely to occur

Description of key information

According to Column 2 of REACH Annex VII (standard information requirements for substances manufactured or imported in quantities of 10 tonnes per year or more) of Regulation (EC) No 1907/2006 and ECHA Guidance on information requirements and chemical safety assessment (3), studies on aquatic toxicity do not need to be conducted if there are mitigating factors indicating that aquatic toxicity is unlikely to occur (e.g. the substance is highly insoluble in water or the substance is unlikely to cross biological membranes). Hexagonal boron nitride is an inorganic crystalline solid covalent nitride with a high chemical inertness (1). It is inert to concentrated and dilute hydrochloric and nitric acid, aqua regia, and alkali solutions at the boiling temperature (2) and it is practically insoluble in water (see section 4.8 of the IUCLID dossier).