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Diss Factsheets

Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Administrative data

Link to relevant study record(s)

toxicity to aquatic algae and cyanobacteria
Type of information:
experimental study
Adequacy of study:
key study
Study period:
1994 or before
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Data peer-reviewed by OECD and cited in OECD SIDS Dossier to be performed according to an OECD guideline, short abstract available.
Reason / purpose for cross-reference:
reference to same study
Reason / purpose for cross-reference:
reference to other study
according to guideline
other: OECD Guideline, not further specified
Principles of method if other than guideline:
The toxicity of trimethylopropane was determined on the green algae Pseudokirchneriella subcapitata (reported as Selenastrum carpicornutum) within 72h, based on biomass.
GLP compliance:
Specific details on test material used for the study:
Details on properties of test surrogate or analogue material (migrated information):
Not applicable
Analytical monitoring:
not specified
Details on sampling:
Details not provided
not specified
Details on test solutions:
Details not provided
Test organisms (species):
Raphidocelis subcapitata (previous names: Pseudokirchneriella subcapitata, Selenastrum capricornutum)
Details on test organisms:
Details not provided
Test type:
not specified
Water media type:
Total exposure duration:
72 h
Post exposure observation period:
Not provided
Not provided
Test temperature:
Not provided
Not provided
Dissolved oxygen:
Not provided
Not applicable
Nominal and measured concentrations:
Nominal concentrations are not provided
Details on test conditions:
Not provided
Reference substance (positive control):
not specified
72 h
Dose descriptor:
Effect conc.:
> 1 000 mg/L
Basis for effect:
Details on results:
Details are not provided
Results with reference substance (positive control):
Not provided / not applicable
Reported statistics and error estimates:
Not provided

No remarks

Validity criteria fulfilled:
not specified
The 72-h EbC50 was determined to be greater than 1000 mg/L.

Executive summary:

The toxicity of trimethylopropane on the green algae Pseudokirchneriella subcapitata (reported as Selenastrum carpicornutum) was tested according to an OECD guideline. The 72-h EbC50 was determined to be greater than 1000 mg/L (based on nominal concentrations).

Being performed by EA Japan according to a OECD-Guideline, the study is considered to be acceptable.

Reference: EA Japan/SIDS, <= 1994

Description of key information

Key value for chemical safety assessment

EC50 for freshwater algae:
1 000 mg/L

Additional information

Assessment is by read-across to the source substance trimethylolpropane (CAS No: 77-99-6).