Registration Dossier
Registration Dossier
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EC number: 941-237-8 | CAS number: -
Short-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
The reported key value has been obtained on ammonium chloride, the main salt constituting the reaction mass.
Key value for chemical safety assessment
Fresh water invertebrates
Fresh water invertebrates
- Effect concentration:
- 101 mg/L
Additional information
The registered substance has not been tested for short-term toxicity to aquatic invertebrates and, as a result, it is proposed to provide an assessment based on data read-acrossed from its main constituents. The registered substance is an inorganic reaction mass consisting of water as well as chloride, carbonate and bicarbonate salts of ammonium and sodium. Those salts are well-known substances and relevant peer-reviewed published data are available to characterize their ecotoxicological properties.
Five studies pertaining to short-term toxicity to aquatic invertebrates are available on ammonium chloride, the main salt constituting the reaction mass. Among those studies, a reliable one was performed on Daphnia magna according to ASTM Standard E729-80. Analytical monitoring was included. The 48-hr EC50 determined was 101 mg/L, although the study was performed with filtered river water. Unknown whether this influenced the outcome of the study. Other studies with ammonium chloride showed even higher EC50 values with longer duration, except for one study with a lower EC50 values, however exposure was 10 days.
Based on available peer-reviewed published data, the other salts constituting the reaction mass can be considered to be not harmful to aquatic invertebrates. Considering the whole constituents of the reaction mass as well as their relative proportions in the latter, the reaction mass can be regarded as not harmful to aquatic invertebrates.
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