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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
toxicity to aquatic algae and cyanobacteria
Type of information:
experimental study
Adequacy of study:
weight of evidence
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Data is from peer reviewed journal
Justification for type of information:
Data is from peer reviewed journal
Qualifier:
according to guideline
Guideline:
other: as mentioned below
Principles of method if other than guideline:
To evaluate efficiency of test material on C. vulgaris
GLP compliance:
not specified
Test organisms (species):
Chlorella vulgaris
Test type:
static
Water media type:
freshwater
Total exposure duration:
96 h
Duration:
96 h
Dose descriptor:
EC50
Effect conc.:
0.161 mg/L
Nominal / measured:
not specified
Conc. based on:
test mat.
Basis for effect:
biomass
Conclusions:
The effect concentration (EC50) of test material on C. vulgaris was observed to be 0.161 mg/l
Executive summary:

A short term toxicity test for test chemical test chemical was performed on C. vulgaris for 96 h .The effect concentration (EC50) of test material on C. vulgaris was observed to be 0.161 mg/l. Based on the above effect concentration it can be considered that the test substance is highly toxic to aquatic algae and hence, can be clasiffied as aquatic acute 1

Description of key information

Toxicity to aquatic algae and cyanobacteria:

A short term toxicity test for test chemical test chemical was performed on C. vulgaris for 96 h .The effect concentration (EC50) of test material on C. vulgaris was observed to be 0.161 mg/l. Based on the above effect concentration it can be considered that the test substance is highly toxic to aquatic algae and hence, can be clasiffied as aquatic acute 1.

Key value for chemical safety assessment

EC50 for freshwater algae:
0.161 mg/L

Additional information

Toxicity to aquatic algae and cyanobacteria:

Toxicity of test material was evaluated for its potentail to inhibit growth of aquatic algae based on the data provided in peer reviewed journal and authoritative database as mentioned below:

1) A short term toxicity test for test chemical test chemical was performed on C. vulgaris for 96 h .The effect concentration (EC50) of test material on C. vulgaris was observed to be 0.161 mg/l. Based on the above effect concentration it can be considered that the test substance is highly toxic to aquatic algae and hence, can be clasiffied as aquatic acute 1.

2)A short term toxicity test for test chemical test chemical was performed on C. vulgaris for 96 h .The effect concentration (EC50) of test material on C. vulgaris was observed to be 0.15 mg/l. Based on the above effect concentration it can be considered that the test substance is highly toxic to aquatic algae and hence, can be clasiffied as aquatic acute 1.

3)Test material was used to evaluate toxicity to aquatic algae Chlorella pyrenoidosa . The test was carried out under static condition for 96h at the temperature 24 deg C . The effect concentration of test material on green algae Chlorella pyrenoidosa was observed to be 0.17 mg/l.Hence, based on the above effect concentration test chemical can be classified as "Aquatic acute 1"