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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
skin irritation: in vitro / ex vivo
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)

Data source

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

Materials and methods

Test guideline
Qualifier:
equivalent or similar to guideline
Guideline:
other: OECD Guideline 431
Deviations:
yes
Remarks:
Reporting incomplete
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
sodium (2R)-2,4-dihydroxy-3,3-dimethyl-butanoate
Cas Number:
60979-68-2
Molecular formula:
C6 H11 Na O4
IUPAC Name:
sodium (2R)-2,4-dihydroxy-3,3-dimethyl-butanoate
Details on test material:
- Name of test material (as cited in study report): Natriumpantoat roh, ber. 100%
- Lot/batch No.: B 671 Mischprobe

Test animals

Species:
other: Human Skin
Strain:
other: EpiDerm

Results and discussion

In vitro

Resultsopen allclose all
Irritation / corrosion parameter:
other: other: Cell Viability
Value:
90
Remarks on result:
other:
Remarks:
Basis: other: Percent of negative control. Time point: 3 min. (migrated information)
Irritation / corrosion parameter:
other: other: Cell viability
Value:
14
Remarks on result:
other:
Remarks:
Basis: other: Percent of negative control. Time point: 1 hour. (migrated information)

Applicant's summary and conclusion

Conclusions:
Because the substance caused cell viability after 3 min and 1 h of more than 50% and less than 15%, respectively, the substance is considered corrosive to human skin.