Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Some information in this page has been claimed confidential.

Administrative data

Endpoint:
skin sensitisation: in vivo (LLNA)
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2017
Report date:
2017

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
OECD Guideline 429 (Skin Sensitisation: Local Lymph Node Assay)
Version / remarks:
Adopted 22 Jul 2010
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method B.42 (Skin Sensitisation: Local Lymph Node Assay)
Version / remarks:
Commission Regulation (EC) No. 440/2008
Deviations:
no

Test material

Constituent 1
Test material form:
solid: nanoform, no surface treatment

In vivo test system

Test animals

Species:
mouse
Strain:
CBA/Ca
Remarks:
CBA/CaOlaHsd
Sex:
female

Results and discussion

In vivo (LLNA)

Resultsopen allclose all
Key result
Parameter:
SI
Value:
ca. 1.07
Test group / Remarks:
10% (w/w) in propylene glycol
Remarks on result:
other: Result: Negative
Key result
Parameter:
SI
Value:
ca. 0.96
Test group / Remarks:
25% (w/w) in propylene glycol
Remarks on result:
other: Result: Negative
Key result
Parameter:
SI
Value:
ca. 1.58
Test group / Remarks:
50% (w/w) in propylene glycol
Remarks on result:
other: Result: Negative
Cellular proliferation data / Observations:
CLINICAL OBSERVATIONS: none

BODY WEIGHTS: no significant changes

Any other information on results incl. tables

Disintegrations per minute, Disintegrations per minute/node, Stimulation Index, and Result

Concentration (% w/w)

in propylene glycol

dpm

dpm/nodea

Stimulation Indexb

Result

Vehicle

6946.46

868.31

NA

NA

10

7433.47

929.18

1.07

Negative

25

6665.40

833.18

0.96

Negative

50

10986.49

1373.31

1.58

Negative

dpm = disintegrations per minute

a= dpm/node obtained by dividing the dpm value by 8 (the total number of lymph nodes)

b= Stimulation Index of 3.0 or greater indicates a positive result

NA = not applicable

Applicant's summary and conclusion