Registration Dossier
Registration Dossier
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EC number: 233-484-9 | CAS number: 10196-04-0
Long-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
The value of 8.41 mg (SO3)2-/L is put forward for the environmental classification and effects assessment of sulfite/disulfite compounds.
Key value for chemical safety assessment
Fresh water invertebrates
Fresh water invertebrates
- Effect concentration:
- 8.41 mg/L
Additional information
The reliable key study (BASF, 1990) on the chronic toxicity of sulfite/disulfite used the cladoceran Daphnia magna as test species, and test substance was sodium metabisulfite (Na2S2O5). The reported 21d-NOEC (endpoint: reproduction rate and mortality) was >10 mg test material/L, which corresponds to 3.37 mg S/L or 8.41 mg SO32-/L. Physicochemical properties of the test media were monitored during the test period, and both pH (7.5-8.0) and oxygen content (>7 mg/L) met the validity criteria set for this type of test.
The value of 8.41 mg SO32-/L is put forward for the environmental classification and effects assessment of sulfite/disulfite compounds.
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