Reaction mass of disodium sulphide and sodium carbonate and sodium hydroxide

Short-term toxicity to fish

Administrative data

Endpoint:

short-term toxicity to fish

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

study well documented, meets generally accepted scientific principles, acceptable for assessment

Justification for type of information:

For this endpoint, an analysis based on the components is performed. Based on SIDS report on Sodium carbonate no acute toxicity was observed on the three trophic levels, including the fish. Based on the SIDS report and EU-RAR about sodium hydroxide, no acute toxicity was observed on the three trophic levels, including the fish. For Na2S, based on registration dossier data, acute fish toxicity was observed, with a LC50 of 0.0027 mg/L.Several other data are available in the registration dossier. The conclusion is that for the multi-constituent, acute fish toxicity is taken into account based on Na2S.

Data source

Reference

Reference Type:

publication

Title:

Effects of hydrogen sulfide on the early developmental stages of javanese carp puntius gonionotus

Author:

Yusoff et al

Year:

1998

Bibliographic source:

Asian Fisheries Science

Materials and methods

Test guideline

Qualifier:

equivalent or similar to guideline

Guideline:

OECD Guideline 203 (Fish, Acute Toxicity Test)

Deviations:

not specified

GLP compliance:

no

Test material

Test material information

Constituent 1

Reference substance name:

sodium sulfide nonahydrate

IUPAC Name:

sodium sulfide nonahydrate

Results and discussion

Effect concentrations

Duration:

96 h

Dose descriptor:

LC50

Effect conc.:

0.003 mg/L

Applicant's summary and conclusion

Validity criteria fulfilled:

yes

Conclusions:

The EC50 considered for the multi-constituent is 0.0027 mg/L