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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
acute toxicity: oral
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)

Data source

Reference
Reference Type:
review article or handbook
Title:
1,4-Naphthoquinone - BUA Report 211 (October 1998)
Author:
GDCh-Advisory Committee on Existing Chemicals (BUA)
Year:
1998
Bibliographic source:
S.Hirzel Verlag Stuttgart; Wissenschaftliche Verlags-Gesellschaft Stuttgart, 2000 , ISBN3-7776-1064-X

Materials and methods

Test guideline
Qualifier:
no guideline followed
Principles of method if other than guideline:
No methods have been provided in the literature.
GLP compliance:
not specified

Test material

1
Chemical structure
Reference substance name:
1,4-naphthoquinone
EC Number:
204-977-6
EC Name:
1,4-naphthoquinone
Cas Number:
130-15-4
Molecular formula:
C10H6O2
IUPAC Name:
1,4-naphthoquinone

Test animals

Species:
rat
Strain:
not specified
Sex:
male

Results and discussion

Effect levels
Sex:
male
Dose descriptor:
LD50
Effect level:
190 mg/kg bw
Based on:
not specified

Any other information on results incl. tables

Male white rats (168 to 185 g) were given the substance orally as an oily solution at doses of 100, 150, 200, 250 and 300 mg/kg body weight. The LD50 was 190 (160 to 220) mg/kg body weight. In all cases postmortems revealed congestion of the internal organs, necrosis and haemorrhages of the gastric mucosa, blurring of the border between the cortex and the medulla of the kidney and in some cases "nutmeg liver" and the accumulation of gas in the small and large intestine.

Applicant's summary and conclusion

Interpretation of results:
Category 3 based on GHS criteria
Conclusions:
LD50= 190 mg/ kg bw