Registration Dossier

Ecotoxicological information

Long-term toxicity to aquatic invertebrates

Administrative data

Endpoint:
long-term toxicity to aquatic invertebrates
Type of information:
migrated information: read-across based on grouping of substances (category approach)
Adequacy of study:
key study
Study period:
1974
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Summary study report
Cross-reference
Reason / purpose:
reference to same study

Data source

Reference
Reference Type:
review article or handbook
Title:
I U C L I D D a t a s e t Substance ID: 74869–22–0
Author:
EUROPEAN COMMISSION – European Chemicals Bureau
Year:
2000
Bibliographic source:
I U C L I D D a t a s e t Substance ID: 74869–22–0 pag 39

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
other: EPA Method 1002.0
Deviations:
not specified
Principles of method if other than guideline:
Summary:
Ceriodaphnia dubia are exposed in a static renewal system to different concentrations of effluent, or to receiving water, until 60% or more of surviving control females have three broods of offspring. Test results are based on survival and reproduction. If the test is conducted as described, the surviving control organisms should produce 15 or more young in three broods. If these criteria are met at the end of 8 days, the test must be repeated.

Scope:
This method measures the chronic toxicity of effluents and receiving waters to the daphnid, Ceriodaphnia dubia, using less than 24h old neonates during a three-brood (seven-day), static renewal test. The effects include the synergistic, atagonistic, and additive effects of all the chemical, physical, and biological components which adversely affect the physiological and biochemical functions of the test organisms.
GLP compliance:
not specified

Test material

Reference
Name:
Unnamed
Type:
Constituent
Type:
Constituent
Type:
Constituent
Type:
Constituent
Type:
Constituent
Details on test material:
Six refined distillates were tested. The test substances were as follows:
Distillate Viscosity CAS No.
(SUS at 100 C)
paraffinic neutral 60 64742–55–8
paraffinic neutral 100 64742–65–0
paraffinic neutral 300 64742–65–0
paraffinic neutral 700 64742–54–7
naphthenic neutral 500 64741–96–4
paraffinic bright 1000 64742–62–7
(Note: no CAS Nos. were assigned in the original reference.)

Sampling and analysis

Analytical monitoring:
not specified

Test solutions

Vehicle:
not specified

Test organisms

Test organisms (species):
Ceriodaphnia sp.

Study design

Test type:
not specified
Water media type:
not specified
Limit test:
yes
Total exposure duration:
7 d

Results and discussion

Effect concentrations
Duration:
7 d
Dose descriptor:
NOEC
Effect conc.:
ca. 552 mg/L
Nominal / measured:
not specified
Conc. based on:
not specified
Basis for effect:
other: survival and reproduction

Applicant's summary and conclusion