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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
experimental study
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:
Unamed
Author:
Unamed
Year:
1980
Bibliographic source:
Unamed

Materials and methods

Test guideline
Qualifier:
no guideline followed
Guideline:
other:
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

Test material

Constituent 1
Chemical structure
Reference substance name:
Ammonium iodide
EC Number:
234-717-7
EC Name:
Ammonium iodide
Cas Number:
12027-06-4
Molecular formula:
H4IN
IUPAC Name:
ammonium iodide
Test material form:
solid
Specific details on test material used for the study:
Data available only for sodium iodide (similar inorganic iodide).

The test was performed to investigate the short term toxicity of iodide (as sodium iodide) to algae. The toxicity of ammonium 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
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.