Reaction Product of Rosin, fumarated, Tall-Oil Rosin, Ca(OH)2 and MgO

Skin sensitisation

Administrative data

Endpoint:

skin sensitisation: in vivo (LLNA)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

October 16 to 22, 2002

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: Study conducted according to guideline

Cross-reference

Reason / purpose for cross-reference:

reference to same study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2002

Report date:

2002

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

OECD Guideline 429 (Skin Sensitisation: Local Lymph Node Assay)

Deviations:

no

Principles of method if other than guideline:

Not applicable

GLP compliance:

yes (incl. QA statement)

Type of study:

mouse local lymph node assay (LLNA)

Test material

Test material information

Constituent 1

Reference substance name:

Rosin, fumarated

EC Number:

266-040-8

EC Name:

Rosin, fumarated

Cas Number:

65997-04-8

IUPAC Name:

Rosin, fumarated

Details on test material:

- Name of test material (as cited in study report): (Phenolic) reaction product of rosin with fumarate (ex raisio) fumarised for 1 hour. (The inclusion of the word phenolic in the study report totle was incorrect)
- Molecular formula (if other than submission substance):
- Molecular weight (if other than submission substance):
- Smiles notation (if other than submission substance):
- InChl (if other than submission substance):
- Structural formula attached as image file (if other than submission substance): see Fig.
- Substance type: Reaction product derived from UVCB
- Physical state: amber coloured solid
- Analytical purity:
- Impurities (identity and concentrations):
- Composition of test material, percentage of components:
- Isomers composition:
- Purity test date:
- Lot/batch No.:
- Expiration date of the lot/batch:
- Radiochemical purity (if radiolabelling):
- Specific activity (if radiolabelling):
- Locations of the label (if radiolabelling):
- Expiration date of radiochemical substance (if radiolabelling):
- Stability under test conditions:
- Storage condition of test material: deep frozen at -18C in the dark
- Other:

In vivo test system

Test animals

Species:

mouse

Strain:

CBA

Sex:

female

Details on test animals and environmental conditions:

TEST ANIMALS
- Source: Harlan UK Limited, Bicester, Oxon, UK
- Age at study initiation: 8-12 weeks
- Weight at study initiation: 15-23 g
- Housing: Individually in suspended solid-floor polypropylene cages furnished with softwood woodflakes.
- Diet (e.g. ad libitum): ad libitum (Certified rat and mouse diet - Code 5LF2- supplied by International Product Supplies Ltd, Northants, UK)
- Water (e.g. ad libitum): ad libitum (tap water)
- Acclimation period: at least 5 days

ENVIRONMENTAL CONDITIONS
- Temperature (°C): 19-25
- Humidity (%): 30-70
- Air changes (per hr): approximately 15
- Photoperiod (hrs dark / hrs light): 12/12

IN-LIFE DATES: From: 16 October 2002 To: 22 October 2002

Study design: in vivo (LLNA)

Vehicle:

acetone/olive oil (4:1 v/v)

Concentration:

0, 0.5, 5, 50% w/v

No. of animals per dose:

4

Details on study design:

RANGE FINDING TESTS: None conducted. Information available suggested that the test material would not produce systemic toxicity or excessive local irritation at the highest suitable concentration.

MAIN STUDY
ANIMAL ASSIGNMENT AND TREATMENT
- Name of test method: pooled
- Criteria used to consider a positive response: SI>=3

TREATMENT PREPARATION AND ADMINISTRATION:
See further details under 'Any other information on materials and methods inc. tables'.
The method used was that described by;
Kimber et al, 1989. The murine local lymph node assay for identification of contact allergens: a preliminary evaluation of in situ measurements of lymphocyte proliferation. Contact Dermatitis 21, 215-220.
Basketter and Scholes, 1992. Comparison of the local lymph node assay with the guinea pig maximisation test for the detection of a range of contact allergens. Food and Chemical Toxicology 30, 65-69.

Positive control substance(s):

other: historical positive control data

Statistics:

no data

Results and discussion

Positive control results:

See table 1 within 'Any other information on results inc. tables' for summary of positive control data for the LLNA in the testing laboratory

In vivo (LLNA)

Results

Results 1

Parameter:

SI

Remarks on result:

other: 0.5% : 1.2 5% : 7.0 50%: 12.8

Results 2

Parameter:

other: disintegrations per minute (DPM)

Remarks on result:

other: 0%- 9608.38; 0.5% - 11105.25; 5%- 67485.31; 50%- 123379.8 Dpm/node (obtained dividing the dpm value by 8 - total number of lymph nodes): 1201.0, 1388.2, 8435.7, 15422.5, respectively.

Any other information on results incl. tables

There were no clinical signs of toxicity or mortality.

Bodyweight changes of the test animals between Day 0 and Day 5 were comparable to those observed in the corresponding control group animals over the same period.

Table 1. Summary of Positive Control Data for the Local Lymph Node Assay for the testing laboratory

Project number	Start date	Finish date	Test material	Concentration % (w/v)	Vehicle	Stimulation Index	Classification
039/516	22/08/01	28/08/01	4-Ethoxymethylene-2-phenyl-2-oxazolin-5-one	0.10, 0.25, 0.50	4:1 acetone/olive oil	14.01, 57.28, 42.18	Positive
039/520	12/12/01	18/12/01	Penicillin G Sodium Salt	10, 25, 50	Dimethyl Formamide	1.7, 4.1, 4.0	Positive
039/522	23/01/02	29/01/02	Polyoxyethylenesorbitan monooleate	0.25, 2.5, 25	4:1 acetone/olive oil	1.22, 2.90, 4.33	Positive
0.39/524	06/03/02	12/03/02	Eugenol	5, 25, 50	4:1 acetone/olive oil	1.7, 9.9, 0.2	Positive
039/525	07/03/02	13/03/02	Cobalt Chloride Hexahydrate	0.005, 0.05, 0.5	Dimethyl Formamide	0.7, 1.4, 6.2	Positive
039/586	13/08/02	19/08/02	Alpha-hexylcinnamaldehyde	5, 10, 50	4:1 acetone/olive oil	5.7, 5.5, 33.5	Positive

Applicant's summary and conclusion

Interpretation of results:

sensitising

Remarks:

Migrated information

Conclusions:

The test material was considered to be a sensitiser under the conditions of the test.

Executive summary:

This is a Local Lymph Node Assay conducted following the OECD guideline. Rosin fumarated was administered topically to mice at 0.5, 5, and 50% w/v in acetone/olive oil 4:1 and the pooled Stimulation Index was 1.2, 7.0, and 12.8, respectively. The test substance is considered to be a sensitiser under the conditions of this study.