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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
weight of evidence
Study period:
July 1998
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
other: in vitro studies with very few details

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1999
Report date:
1999

Materials and methods

Test guideline
Qualifier:
no guideline followed
Principles of method if other than guideline:
In vitro ocular tests (Ocular irritection, Het Cam, Predisafe) were performed.
GLP compliance:
no

Test material

Constituent 1
Reference substance name:
Valproic Acid
IUPAC Name:
Valproic Acid
Details on test material:
- Name of test material (as cited in study report): S2404
- Lot/batch No.: 8M00005

Test system

Observation period (in vivo):
72h (on Day 4)

Results and discussion

In vitro

Resultsopen allclose all
Irritation parameter:
other: index of ocular irritection
Value:
44.4
Remarks on result:
positive indication of irritation
Irritation parameter:
other: IC50 (%) [Predisafe test]
Value:
< 50
Remarks on result:
positive indication of irritation
Irritation parameter:
other: Luëpke score [Het Cam]
Value:
18.5
Remarks on result:
positive indication of irritation

Any other information on results incl. tables

In vitro ocular tests: Irritant in vitro

Applicant's summary and conclusion

Interpretation of results:
irritating
Remarks:
Migrated information Criteria used for interpretation of results: expert judgment
Conclusions:
An in vitro ocular study was performed: Valproic acid was irritant in vitro. This result confirms the irritant properties of the compound which must be classified Eye Dam 1 (H318), risk of severe ocular lesion.