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REACH

Cerium tetranitrate

EC number: 236-007-2 | CAS number: 13093-17-9

Life Cycle description
Uses advised against

Ecotoxicological information

Ecotoxicological Summary

Administrative data

Hazard for aquatic organisms

Hazard for air

Hazard for terrestrial organisms

Hazard for predators

Additional information

Conclusion on classification

Cerium tetranitrate is not considered to be biodegradable due to its inorganic nature. Furthermore, the substance is not considered to be bioaccumulative based on bibliographic data on fish, the preferred REACH-species to assess bioaccumulation potential. A short-term toxicity test with fish performed with the read across substance cerium ammonium nitrate suggested that cerium tetranitrate is very toxic to fish, since a 96-h LC50 value of 0.39 mg Ce(NO3)4/L is obtained when recalculating the Ce-based 96-h LC50 value of 0.14 mg Ce/L reported in this study. No adverse effects have been observed in the key acute toxicity study with aquatic invertebrates (48-h EC50 > 100 mg Ce(NO3)4/L - based on nominal loading rate because no adverse effects were observed). Further, as discussed in the endpoint summary for toxicity to aquatic algae and cyanobacteria, the results of the key study covering this endpoint are not taken forward to classification because the observed adverse effects on growth were not considered to be due to direct cerium toxicity but rather due to cerium-mediated depletion of phosphate from the test medium. Taking into consideration the acute test results together with environmental fate data and in accordance with the criteria for classification as defined in Annex I, Regulation (EC) No. 1272/2008, the test material is classified as follows:

Aquatic acute 1 (H400) - Acute M-factor 1

Aquatic chronic 1 (H410) - Chronic M-factor 1

According to the Dangerous Substance Directive 67/548/EC (Annex VI, section 5.2.1.2), the substance should be classified N; R50/53.

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