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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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 vivo
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: The test was conducted according to EU Method in compliance with GLP.

Data source

Reference
Reference Type:
other: body responsible for the test
Title:
Unnamed
Year:
1997

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
EU Method B.4 (Acute Toxicity: Dermal Irritation / Corrosion)
Version / remarks:
(92/69/EEC)
GLP compliance:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
Phenyl bis(2,4,6-trimethylbenzoyl)-phosphine oxide
EC Number:
423-340-5
EC Name:
Phenyl bis(2,4,6-trimethylbenzoyl)-phosphine oxide
Cas Number:
162881-26-7
Molecular formula:
C26H27O3P
IUPAC Name:
[phenyl(2,4,6-trimethylbenzoyl)phosphoryl](2,4,6-trimethylphenyl)methanone

Test animals

Species:
rabbit
Strain:
New Zealand White

Test system

Type of coverage:
semiocclusive
Vehicle:
other: distilled water
Amount / concentration applied:
500 mg
Duration of treatment / exposure:
4 h
Observation period:
72 h
Number of animals:
3

Results and discussion

In vivo

Resultsopen allclose all
Irritation parameter:
erythema score
Basis:
animal #1
Remarks:
(mean score 1)
Time point:
other: overall at 24,48, and 72 h
Score:
0
Irritation parameter:
erythema score
Basis:
animal #2
Remarks:
(mean score 2)
Time point:
other: overall at 24,48, and 72 h
Score:
0
Irritation parameter:
erythema score
Basis:
animal #3
Remarks:
(mean score 3)
Time point:
other: overall at 24,48, and 72 h
Score:
0
Irritation parameter:
erythema score
Max. score:
0
Remarks on result:
other: Max. duration 0 d; max. value at end of observation period: 0 (related to all animals)
Irritation parameter:
edema score
Basis:
animal #1
Remarks:
(mean score 1)
Time point:
other: overall at 24,48, and 72 h
Score:
0
Irritation parameter:
edema score
Basis:
animal #2
Remarks:
(mean score 2)
Time point:
other: overall at 24,48, and 72 h
Score:
0
Irritation parameter:
edema score
Basis:
animal #3
Remarks:
(mean score 3)
Time point:
other: overall at 24, 48, and 72 h
Score:
0
Irritation parameter:
edema score
Max. score:
0
Remarks on result:
other: Max. duration 0 d; max. value at end of observation period: 0 (related to all animals)
Other effects:
none

Any other information on results incl. tables

Scores of zero were observed at 24, 48 and 72 hours for all three rabbits.

Applicant's summary and conclusion

Interpretation of results:
not classified
Remarks:
Migrated information Criteria used for interpretation of results: EU
Conclusions:
Non-irritant.
No irritation effects noted. Erythema and edema score were zero.The test substance was not irritating to the skin of rabbits.