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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
eye irritation: in vivo
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Acceptable, well-documented study report equivalent or similar to OECD guideline (405): pre-GLP.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1982

Materials and methods

Test guideline
Qualifier:
equivalent or similar to guideline
Guideline:
OECD Guideline 405 (Acute Eye Irritation / Corrosion)
Principles of method if other than guideline:
Draize method
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
2,2-dimethylbutyric acid
EC Number:
209-865-0
EC Name:
2,2-dimethylbutyric acid
Cas Number:
595-37-9
Molecular formula:
C6H12O2
IUPAC Name:
2,2-dimethylbutanoic acid

Test animals / tissue source

Species:
rabbit
Strain:
New Zealand White

Test system

Vehicle:
unchanged (no vehicle)
Controls:
yes, concurrent no treatment
Amount / concentration applied:
0.1 ml
Duration of treatment / exposure:
14 days
Observation period (in vivo):
14 days
Number of animals or in vitro replicates:
3 male, 5 female
Details on study design:
The conjunctival redness chemosis and discharge, corneal opacity and damge to the iris following the instillation of 0.2 mL undiluted chemical into the conjunctival sac of two rabbit eyes was scored using standard scales.

Results and discussion

In vivo

Resultsopen allclose all
Irritation parameter:
overall irritation score
Basis:
mean
Time point:
other: 1-2 h
Score:
40
Irritation parameter:
overall irritation score
Basis:
mean
Time point:
other: 24 h
Score:
38
Irritation parameter:
overall irritation score
Basis:
mean
Time point:
other: 48 h
Score:
34
Irritation parameter:
overall irritation score
Basis:
mean
Time point:
other: 72 h
Score:
42
Irritation parameter:
overall irritation score
Basis:
mean
Time point:
other: 7 days
Score:
42
Irritation parameter:
overall irritation score
Basis:
mean
Time point:
other: 14 days
Score:
29
Other effects:
Severe pain response

Applicant's summary and conclusion

Interpretation of results:
highly irritating
Remarks:
Migrated information
Conclusions:
The test material was severely irritating to rabbit eyes.
Executive summary:

On the basis of this study Versatic 6 is considered to be an irritant to the eye.