Registration Dossier
Registration Dossier
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EC number: 234-796-8 | CAS number: 12033-89-5
Ecotoxicological Summary
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:
- no potential for bioaccumulation
Additional information
Silicon nitride was found to have no toxic effects in any of the aquatic species tested (no mortality or sub-lethal effects seen in fish, no immobilisation of daphnia was observed, and there was no inhibition of the growth of algae); in addition, no inhibition of microorganisms was seen in an ASRIT. When this extremely low toxicity profile is considered alongside the very low water solubility and low potential to bioaccumulate, it may be concluded that Silicon Nitride presents no significant hazard for the aquatic environment.
On the basis of low toxicity (no identified toxicity) in aquatic species, and the low (no) toxicity seen in mammals (please refer also to dossier section 7), no toxicity in terrestrial organisms is anticipated.
Conclusion on classification
None of the available aquatic toxicity tests (acute testing in three trophic levels) identified any hazard to the aquatic environment. On this basis it is concluded that Silicon Nitride is not classified as Hazardous to the Environment within the meaning of either the CLP Regulation, nor the Dangerous Substances Directive.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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