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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Toxicological information

Skin sensitisation

Currently viewing:

Administrative data

Endpoint:
skin sensitisation: in vivo (LLNA)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
1999
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Experiment conducted prior to establishment of guideline; documentation is incomplete but conducted by a reputable industry laboratory.

Data source

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

Materials and methods

Test guideline
Qualifier:
equivalent or similar to guideline
Guideline:
OECD Guideline 429 (Skin Sensitisation: Local Lymph Node Assay)
Deviations:
no
GLP compliance:
yes
Type of study:
mouse local lymph node assay (LLNA)

Test material

Constituent 1
Chemical structure
Reference substance name:
Isopropyl benzoate
EC Number:
213-361-6
EC Name:
Isopropyl benzoate
Cas Number:
939-48-0
Molecular formula:
C10H12O2
IUPAC Name:
propan-2-yl benzoate
Constituent 2
Reference substance name:
13-361-6
IUPAC Name:
13-361-6
Constituent 3
Reference substance name:
propan-2-yl benzoate
IUPAC Name:
propan-2-yl benzoate
Test material form:
other: Liquid
Details on test material:
- Name of test material: Isopropyl Benzoate

In vivo test system

Test animals

Species:
mouse
Strain:
not specified
Sex:
not specified
Details on test animals and environmental conditions:
No environmental conditions data is provided in the study report.

Study design: in vivo (LLNA)

Vehicle:
other: Acetone
Concentration:
3% w/v, 10% w/v and 30% w/v.
No. of animals per dose:
No details
Details on study design:
A sample of Isopropyl Benzoate was assessed for its skin sensitisation potential using the mouse Local Lymph Node Assay. The assay determines
the level of T lymphocyte proliferation in the lymph nodes drainage at the site of chemical application, by measuring the amount of radiolabelled thymidine incorporated into the dividing cells. The test substance was applied as 3%, 10% or 30% w/v preparations in Acetone.
Positive control substance(s):
not specified

Results and discussion

In vivo (LLNA)

Resultsopen allclose all
Parameter:
SI
Remarks on result:
other: see table below
Parameter:
other: disintegrations per minute (DPM)
Remarks on result:
other: see table below

Any other information on results incl. tables

Concentration of Test Substance

CPM / lymph node (xl0 -2)

CPM(counts per minute)

Test/control ratio

Acetone (control)

0.94

NA

3% w/v

1.42

l.51

10%w/v

2.20

2.34

30% w/v

3.76

4.00

Applicant's summary and conclusion

Interpretation of results:
Category 1 (skin sensitising) based on GHS criteria
Remarks:
Migrated information
Conclusions:
IPB is a potential sensitizer in the conditions of the test.