Condensation products of N-(6-aminohexyl)-12-hydroxyoctadecanamide and sebacic acid

Toxicity to aquatic algae and cyanobacteria

Link to relevant study record(s)

Reference

Endpoint:

toxicity to aquatic algae and cyanobacteria

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2018

Reliability:

1 (reliable without restriction)

Qualifier:

according to guideline

Guideline:

OECD Guideline 201 (Alga, Growth Inhibition Test)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Analytical monitoring:

yes

Details on sampling:

after 24, 48 and 72 h

Vehicle:

yes

Test organisms (species):

Pseudokirchneriella subcapitata (previous names: Raphidocelis subcapitata, Selenastrum capricornutum)

Test type:

other: with stirring

Water media type:

freshwater

Limit test:

yes

Total exposure duration:

72 h

Hardness:

not determined

Test temperature:

21 to 24 ± 2 °C

pH:

~7

Dissolved oxygen:

Not measured.

Salinity:

N/A

Conductivity:

Not measured

Nominal and measured concentrations:

<0.00013mg/l based on water soulbiltiy

Reference substance (positive control):

yes

Key result

Duration:

72 h

Dose descriptor:

EC50

Effect conc.:

ca. 0 mg/L

Nominal / measured:

nominal

Conc. based on:

test mat.

Basis for effect:

growth rate

Remarks on result:

not determinable

Details on results:

EC50 is based on limit of soulbility for the substance

Results with reference substance (positive control):

Positive control is checked regulatrly

Validity criteria fulfilled:

yes

Conclusions:

EC50 is limited to 0.00013mg/L due to limit of water solubility

Description of key information

EC50 is limited to 0.00013 mg/L due to limit of water solubility.

Key value for chemical safety assessment

EC50 for freshwater algae:

0 mg/L