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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
acute toxicity: dermal
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1974
Report date:
1974

Materials and methods

Principles of method if other than guideline:
The study was designed to evaluate the acute dermal toxicity of N-phenyl-α-naphthylamine in rabbits.
GLP compliance:
no
Test type:
standard acute method
Limit test:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
N-1-naphthylaniline
EC Number:
201-983-0
EC Name:
N-1-naphthylaniline
Cas Number:
90-30-2
Molecular formula:
C16H13N
IUPAC Name:
N-phenylnaphthalen-1-amine
Details on test material:
- Name of test material (as cited in study report): Phenyl alpha naphthylamine; PANA
- Analytical purity: no data
- Charge No.: 05380

Test animals

Species:
rabbit
Strain:
other: albino
Sex:
male
Details on test animals or test system and environmental conditions:
TEST ANIMALS
- Age at study initiation: 3 to 5 months

Administration / exposure

Type of coverage:
occlusive
Vehicle:
carbowaxe
Remarks:
PEG 400
Details on dermal exposure:
TEST SITE
- Area of exposure: trunk

REMOVAL OF TEST SUBSTANCE
- Time after start of exposure: 24 hours

TEST MATERIAL
- Amount(s) applied (volume or weight with unit): maximum dose that can be retained is 20 mL/kg
Duration of exposure:
24 hours
Doses:
2000 and 8000 mg/kg bw
No. of animals per sex per dose:
8000 mg/kg bw: 5 animals
2000 mg/kg bw: 2 animals
Control animals:
not specified
Details on study design:
- Duration of observation period following administration: no data
- Frequency of observations and weighing: no data
- Necropsy of survivors performed: yes
- Other examinations performed: clinical signs, body weight, gross pathology

Results and discussion

Effect levels
Sex:
male
Dose descriptor:
LD50
Effect level:
> 5 000 mg/kg bw
Mortality:
8000 mg/kg bw group: one animal died on day 8
Clinical signs:
other: 8000 mg/kg bw group: Urine brown - similar in colour to chemical sample. Also erythema were observed
Gross pathology:
Livers congested and mottled; spleens dark; kidneys khaki brown in colour.
Other findings:
no data

Applicant's summary and conclusion

Interpretation of results:
other: EU GHS criteria not met