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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

Administrative data

Endpoint:
toxicity to aquatic algae and cyanobacteria
Type of information:
migrated information: read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Published literature fulfilled basically scientific principles.

Data source

Reference
Reference Type:
publication
Title:
Unnamed
Year:
1980

Materials and methods

Test guideline
Qualifier:
no guideline followed
Principles of method if other than guideline:
As a method of the toxicological study, the 7 days cell multiplication inhibition test was applied to the model organism, Scenedesmus quadricauda(green algae) for iodide.
GLP compliance:
no
Remarks:
Old literature

Test material

Constituent 1
Reference substance name:
Sodium iodide
EC Number:
231-679-3
EC Name:
Sodium iodide
Cas Number:
7681-82-5
IUPAC Name:
sodium iodide
Details on test material:
The test was performed to investigate the short term toxicity of iodide (as sodium iodide) to algae. The toxicity of potassium iodide also come from iodide.

Sampling and analysis

Analytical monitoring:
no

Test solutions

Vehicle:
no

Test organisms

Test organisms (species):
Scenedesmus quadricauda

Study design

Test type:
static
Water media type:
freshwater
Limit test:
no
Total exposure duration:
7 d

Results and discussion

Effect concentrations
Duration:
7 d
Dose descriptor:
other: Toxicity thresholds
Effect conc.:
2 370 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
biomass

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Remarks:
Fulfilled basically scientific principles
Conclusions:
The toxicity threshold for iodide to algae can be concluded to 2370 mg/l.
Executive summary:

As a method of the toxicological study, the 7 days cell multiplication inhibition test was applied to the model organism, Scenedesmus quadricauda (green algae) for iodide. The results show the toxicity threshold ( ≥3% inhibition of the biomass of green algae) of iodide to green algae is 2370 mg/l.