Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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 vitro / ex vivo
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2016
Report date:
2016

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 437 (Bovine Corneal Opacity and Permeability Test Method for Identifying Ocular Corrosives and Severe Irritants)
GLP compliance:
yes (incl. QA statement)

Test material

Constituent 1
Chemical structure
Reference substance name:
1,3-bis(methylthio)propan-1-ol
EC Number:
813-843-1
Cas Number:
54884-93-4
Molecular formula:
C5H12OS2
IUPAC Name:
1,3-bis(methylthio)propan-1-ol
Test material form:
liquid
Details on test material:
- Analytical purity: 93 %
- Lot/batch No.: AK16-008

Test animals / tissue source

Species:
cattle
Details on test animals or tissues and environmental conditions:
Freshly isolated bovine cornea (at least 9 month old donor cattle)

Test system

Vehicle:
unchanged (no vehicle)
Controls:
yes, concurrent positive control
yes, concurrent negative control
Amount / concentration applied:
0.75 mL
Duration of treatment / exposure:
10 min
Duration of post- treatment incubation (in vitro):
2 h
Number of animals or in vitro replicates:
3

Results and discussion

In vitro

Results
Irritation parameter:
in vitro irritation score
Value:
11.31
Negative controls validity:
valid
Positive controls validity:
valid

Applicant's summary and conclusion

Interpretation of results:
Category 2 (irritating to eyes) based on GHS criteria
Conclusions:
In conclusion, according to the current study and under the experimental conditions reported, MMP-MC is not serious eye damaging UN GHS Category 1 but no prediction for eye irritation can be made (GHS).