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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
comparable to guideline study with acceptable restrictions
Justification for type of information:
The study was conducted well before GLP or OECD guidelines. Documentation is very limited, but the study was conducted at a leading laboratory to the state of the art at the time.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1960

Materials and methods

Test guideline
Qualifier:
equivalent or similar to guideline
Guideline:
OECD Guideline 402 (Acute Dermal Toxicity)
GLP compliance:
no
Test type:
other:
Limit test:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
Isobutyl isobutyrate
EC Number:
202-612-5
EC Name:
Isobutyl isobutyrate
Cas Number:
97-85-8
Molecular formula:
C8H16O2
IUPAC Name:
2-methylpropyl 2-methylpropanoate

Test animals

Species:
guinea pig

Administration / exposure

Type of coverage:
occlusive
Details on dermal exposure:
IBIB was applied to skin under a gauze pad and occlusive covering with a rubber cuff.
Duration of exposure:
24 hours
Doses:
5 or 10 cc/kg
Details on study design:
The test article was applied for 24 hours under an occlusive rubber cuff. After removal the test subjects were observed for 2 weeks.

Results and discussion

Effect levels
Dose descriptor:
LD50
Effect level:
> 10 other: cc/kg
Based on:
test mat.
Mortality:
none

Applicant's summary and conclusion

Interpretation of results:
GHS criteria not met
Conclusions:
The dermal LD50 was > 10 cc/kg
Executive summary:

The dermal LD50 was > 10 cc/kg