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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

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Diss Factsheets

Ecotoxicological information

Long-term toxicity to aquatic invertebrates

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Administrative data

Link to relevant study record(s)

Description of key information

Long term effect on aquatic invertebrates are not expected due to the high volatility of the test substance.

Key value for chemical safety assessment

Additional information

Due to the physico-chemical properties of chloroethane (CAS 75-00-3) a long-term toxicity of the substance to fish is not expected. Chloroethane is a gaseous substance characterised by a vapour pressure of 134200 Pa at 20 °C (62330 Pa at 0 °C). Dissolved chloroethane will evaporate from the water surface, as indicated by the calculated Henry's Law constant of 1124.70 Pa m³/mol (Gossett, 1987). Thus, the substance is not expected to exist in the aquatic compartment over a longer period of time. Due to these characteristics, extensive elimination by evaporation in conventional STPs can be expected. Therefore, only low concentrations, if any, are likely to be released into the water phase. The potentially released substance will not accumulate in natural waters, but evaporate from the natural water bodies. Thus, a long-term exposure to aquatic organisms is not anticipated. The substance is furthermore characterised by a very low bioaccumulation potential. The environmental exposure assessment for chloroethane indicates no risk for the aquatic compartment (all RCR< 1; please refer to Chapter 9 and 10 of the Chemical Safety Report for detailed information).
Therefore, and for reasons of animal welfare, long-term testing is omitted.

Waiving according to REACH Annex XI, section 2 (testing is technically not possible)
Chloroethane is a gas - testing is technically not feasible: the testing guideline for chronic Daphnia toxicity (OECD TG 211) has no provisions for testing of gases. In conclusion, long-term testing is omitted.