Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Endpoint:
short-term toxicity to fish
Type of information:
experimental study
Adequacy of study:
supporting study
Study period:
Apr 1980
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
documentation insufficient for assessment

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1980
Report date:
1980

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: DIN 380412 L15 (Fish, Acute toxicity test) o 1976
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
Benzenesulfonic acid, 2,2'-(1,2-ethenediyl)bis[5-nitro-, reaction products with 4-[(4-aminophenyl)azo]benzenesulfonic acid, reduced, oxidized, potassium sodium salts
EC Number:
290-714-0
EC Name:
Benzenesulfonic acid, 2,2'-(1,2-ethenediyl)bis[5-nitro-, reaction products with 4-[(4-aminophenyl)azo]benzenesulfonic acid, reduced, oxidized, potassium sodium salts
Cas Number:
90218-39-6
Molecular formula:
C38H24N8Na4O12S4
IUPAC Name:
tetrasodium 2-[(1E)-2-{2-sulfonato-4-[(1E)-2-{4-[(1E)-2-(4-sulfonatophenyl)diazen-1-yl]phenyl}diazen-1-yl]phenyl}ethenyl]-5-[(1E)-2-{4-[(1E)-2-(4-sulfonatophenyl)diazen-1-yl]phenyl}diazen-1-yl]benzene-1-sulfonate
Test material form:
solid
Details on test material:
Direct Orange 57

Sampling and analysis

Analytical monitoring:
not specified

Test solutions

Vehicle:
no

Test organisms

Test organisms (species):
Leuciscus idus melanotus

Study design

Test type:
static
Water media type:
freshwater
Limit test:
yes
Total exposure duration:
48 h

Test conditions

Nominal and measured concentrations:
1000 mg/L
Details on test conditions:
TEST SYSTEM
- No. of organisms per vessel: 2
- No. of vessels per concentration (replicates): 1
Reference substance (positive control):
no

Results and discussion

Effect concentrations
Duration:
48 h
Dose descriptor:
LC50
Effect conc.:
> 1 000 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
mortality (fish)
Details on results:
No mortality occurred
No symptoms observed

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Conclusions:
The 48-h LC50 to Leuciscus idus was determined to be >1000 mg/L. The substance is not acutely toxic to fish. No dead animals or any symptoms observed at 1000 mg/L.