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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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 / corrosion, other
Type of information:
experimental study
Adequacy of study:
key study
Study period:
104 Days
Reliability:
1 (reliable without restriction)

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2012
Report date:
2012

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 404 (Acute Dermal Irritation / Corrosion)
Deviations:
no
GLP compliance:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
1,7-bis(4-hydroxy-3-methoxyphenyl)heptane-3,5-dione
EC Number:
900-021-3
Molecular formula:
3,5-Heptanedione-1-(4-hydroxy-3-methoxyphenyl)-7-(4-hydroxyphenyl) :C20 H22O5, 3,5-Heptanedione-1,7 -bis(4-hydroxyphenyl) : C19H20O4, 3,5-Heptanedione-1,7-bis(4-hydroxy-3-methoxyphenyl) : C21H24O6
IUPAC Name:
1,7-bis(4-hydroxy-3-methoxyphenyl)heptane-3,5-dione
Test material form:
solid: crystalline

In vitro test system

Test system:
other: Semi-Occlusive
Source species:
rabbit
Cell type:
other: Semi-Occlusive
Cell source:
foreskin from a single donor
Source strain:
New Zealand White
Vehicle:
water
Control samples:
not specified
Amount/concentration applied:
0.5g
Duration of treatment / exposure:
4h
Duration of post-treatment incubation (if applicable):
48h
Number of replicates:
3

Test animals

Species:
rabbit
Strain:
New Zealand White

Test system

Vehicle:
water

Results and discussion

In vitro

Results
Irritation / corrosion parameter:
penetration time (in minutes)
Vehicle controls validity:
valid
Negative controls validity:
not specified
Positive controls validity:
not specified
Remarks on result:
no indication of irritation

Applicant's summary and conclusion

Interpretation of results:
Category 3 (mild irritant) based on GHS criteria
Conclusions:
In-vitro Skin Irritation/ Corrosion confirms that Substance is considered as non-Irritation.