1-(4-methyl-2-nitrophenylazo)-2-naphthol

Short-term toxicity to fish

Administrative data

Endpoint:

short-term toxicity to fish

Type of information:

experimental study

Adequacy of study:

key study

Study period:

1998

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: Method very poorly described

Data source

Reference

Reference Type:

publication

Title:

Unnamed

Year:

1998

Report date:

1998

Materials and methods

Test guideline

Qualifier:

equivalent or similar to guideline

Guideline:

OECD Guideline 203 (Fish, Acute Toxicity Test)

Deviations:

not specified

GLP compliance:

yes

Test material

Test material information

Constituent 1

Reference substance name:

1-(4-methyl-2-nitrophenylazo)-2-naphthol

EC Number:

219-372-2

EC Name:

1-(4-methyl-2-nitrophenylazo)-2-naphthol

Cas Number:

2425-85-6

Molecular formula:

C17H13N3O3

IUPAC Name:

1-(4-methyl-2-nitrophenylazo)-2-naphthol

Test material form:

solid: particulate/powder

Remarks:

migrated information: powder

Details on test material:

Purity: 96.6%
Temperature: 25 +/- 2 °C

Test organisms

Test organisms (species):

Oryzias latipes

Study design

Total exposure duration:

48 h

Results and discussion

Effect concentrations

Effect concentrations 1

Duration:

48 h

Dose descriptor:

LC50

Effect conc.:

> 400 mg/L

Effect concentrations 2

Duration:

24 h

Dose descriptor:

LC50

Effect conc.:

> 400 mg/L

Applicant's summary and conclusion

Validity criteria fulfilled:

yes

Conclusions:

The test substance has a low acute toxicity to fish (Oryzias latipes) with LC48h > 400 mg/L high above the water solubility of the test substance.