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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: well documented publication which meets basic scientific principles.

Data source

Reference
Reference Type:
publication
Title:
Actual survey on TLm (median tolerance limit) values of environmental pollutants, especially on amines, nitrilens, aromatic nitrogens compounds and artificial dyes
Author:
Tonogai Y et al.
Year:
1982
Bibliographic source:
Journal of Toxicological Sciences 7:193-203

Materials and methods

Principles of method if other than guideline:
The TLm (Median tolerance limit) was carried out according to Japanese industrial standards (Japanese Industrial Standards Comittee, 1971).
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
4-aminoazobenzene
EC Number:
200-453-6
EC Name:
4-aminoazobenzene
Cas Number:
60-09-3
Molecular formula:
C12H11N3
IUPAC Name:
4-[(E)-2-phenyldiazen-1-yl]aniline
Details on test material:
I- Name of test material (as cited in study report): p-aminoazobenzene
- Analytical purity: not stated,

Sampling and analysis

Analytical monitoring:
no

Test solutions

Details on test solutions:
Chemical substances were dissolved in water and neutralized, if necessary. Some Substances were dissolved in 1 ml ethanol, and then diluted with water.

Test organisms

Test organisms (species):
Oryzias latipes
Details on test organisms:
Fish of the same age (ca. 2 cm length; 0.2 g weight) for each experiment.

Study design

Test type:
static
Water media type:
freshwater
Limit test:
no
Total exposure duration:
48 h

Test conditions

Test temperature:
25°C

Results and discussion

Effect concentrationsopen allclose all
Duration:
48 h
Dose descriptor:
LC50
Effect conc.:
0.7 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
mortality (fish)
Duration:
24 h
Dose descriptor:
LC50
Effect conc.:
1.7 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
mortality (fish)

Applicant's summary and conclusion