Registration Dossier
Registration Dossier
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EC number: 236-690-7 | CAS number: 13464-97-6
Short-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
Key value for chemical safety assessment
Fresh water invertebrates
Fresh water invertebrates
- Effect concentration:
- 0.16 mg/L
Additional information
There are four short-term invertebrate toxicity studies, all of the which are read across from other substances.
The key study is a 48-hour acute toxicity of hydrazine hydrate to the daphnid, Daphnia pulex. The daphnids were exposed to measured concentrations ranging from 0 to 5.36 mg/l and 0 to 4.35 mg/l (as there were two series of tests). The 48-hour EC50s (based on immobilisation) were reported as 0.19 and 0.16 mg/l. The study is classified as Klimisch Code 2 (reliable with restriction) as it was well reported and detailed and in a peer review publication.
The supporting studies included a 48 hour LC50 of 0.04 mg/l in the amphipod, Hyalella azteca; a 24 hour LC50 0.81 mg/l in the water flea,Daphnia magna; and the 72 hour LC50 of 1.3 mg/l in the isopod,Asellus sp.
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