Registration Dossier
Registration Dossier
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EC number: 282-775-7 | CAS number: 84418-63-3
Skin sensitisation
Administrative data
- Endpoint:
- skin sensitisation: in vivo (non-LLNA)
- Type of information:
- migrated information: read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- weight of evidence
- Study period:
- 14 Dec 1998 - 31 Jan 1999
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Guideline study with acceptable restrictions. (Limited documentation of induction and test substance; only 4 control animals due to sacrifice of one animal at day 21, challenge was done open and not occlusive)
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 999
- Report date:
- 1999
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 406 (Skin Sensitisation)
- Version / remarks:
- Magnussen and Kligmann Method
- Deviations:
- yes
- Remarks:
- Limited documentation of induction and test substance; only 4 control animals due to sacrifice of one animal at day 21, challenge was done open and not occlusive
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- EU Method B.6 (Skin Sensitisation)
- Deviations:
- yes
- Remarks:
- Limited documentation of induction and test substance; only 4 control animals due to sacrifice of one animal at day 21, challenge was done open and not occlusive
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- The Department of Health of the Government of the United Kingdom
- Type of study:
- guinea pig maximisation test
- Justification for non-LLNA method:
- test performed before LLNA was adopted
Test material
- Reference substance name:
- 131459-39-7
- Cas Number:
- 131459-39-7
- IUPAC Name:
- 131459-39-7
- Details on test material:
- - Physical state: straw colored liquid
- Analytical purity: no data
- Storage condition of test material: RT in the dark
Constituent 1
In vivo test system
Test animals
- Species:
- guinea pig
- Strain:
- Dunkin-Hartley
- Sex:
- male
- Details on test animals and environmental conditions:
- TEST ANIMALS
- Source: David Hall Limited, Staffordshire, UK
- Age at study initiation: 8-12 weeks
- Weight at study initiation: 340 g-421 g
- Housing: individually housed in solid floor polypropylene cages furnished with woodflakes
- Diet: ad libitum Guinea Pig FD1 Diet, Special Diets Services Limited, Witham, Essex, UK)
- Water: ad libitum
- Acclimation period: at least 5 d
ENVIRONMENTAL CONDITIONS
- Temperature (°C): 19-21
- Humidity (%): 44-57
- Air changes (per hr): 15
- Photoperiod (hrs dark / hrs light): 12 / 12
Study design: in vivo (non-LLNA)
Induction
- Route:
- intradermal and epicutaneous
- Vehicle:
- arachis oil
- Concentration / amount:
- Induction: Intradermal induction 25%, epicutaneous induction 100%
Challenge: 100% and 75% (v/v) in arachis oil
Challenge
- Route:
- epicutaneous, open
- Vehicle:
- arachis oil
- Concentration / amount:
- Induction: Intradermal induction 25%, epicutaneous induction 100%
Challenge: 100% and 75% (v/v) in arachis oil
- No. of animals per dose:
- 10 (test groups)
4 (control group; initially 5, but 1 animal was sacrificed on Day 21) - Details on study design:
- RANGE FINDING TESTS: Yes
Intradermal: Four concentrations of the test substance were investigated (1%, 5%, 10% and 25%) in a total of 4 guinea pigs. Each animal received four injections of 0.1 ml (only one concentration) and the skin reaction was assessed 24 h, 48 h, 72 h and 7 d afterwards according to Draize.
Topical: Two animals were pre-treated with an intradermal injection of FCA 17 days prior to test material administration.
Animals were administered four different concentrations (25%, 50%, 75% and 100%) of the test substance. Treatment was for 24 h under occlusive conditions and skin reaction was observed for dermal irritation 24 and 48 h afterwards.
MAIN STUDY
A. INDUCTION EXPOSURE
No further data available due to a loss of one page of the study report
- Concentrations: Intradermal induction: 25%, Topical induction: 100%
B. CHALLENGE EXPOSURE
- No. of exposures: 1
- Day(s) of challenge: 14 after topical induction
- Exposure period: 24 h
- Test groups: 1
- Control group: 1
- Site: Left (75%) and right (100%) flank
- Concentrations: 75% and 100%
- Evaluation (hr after challenge): 24 and 48 h after removal of the patches - Positive control substance(s):
- yes
- Remarks:
- PEG 400 70:30 in Acetone
Results and discussion
- Positive control results:
- In the range of the historical controls
In vivo (non-LLNA)
Resultsopen allclose all
- Reading:
- 1st reading
- Hours after challenge:
- 24
- Group:
- negative control
- Dose level:
- 0%
- No. with + reactions:
- 0
- Total no. in group:
- 4
- Remarks on result:
- other: Reading: 1st reading. . Hours after challenge: 24.0. Group: negative control. Dose level: 0%. No with. + reactions: 0.0. Total no. in groups: 4.0.
- Reading:
- 1st reading
- Hours after challenge:
- 24
- Group:
- test chemical
- Dose level:
- 100%
- No. with + reactions:
- 0
- Total no. in group:
- 10
- Remarks on result:
- other: Reading: 1st reading. . Hours after challenge: 24.0. Group: test group. Dose level: 100%. No with. + reactions: 0.0. Total no. in groups: 10.0.
- Reading:
- 1st reading
- Hours after challenge:
- 24
- Group:
- test chemical
- Dose level:
- 75%
- No. with + reactions:
- 0
- Total no. in group:
- 10
- Remarks on result:
- other: Reading: 1st reading. . Hours after challenge: 24.0. Group: test group. Dose level: 75%. No with. + reactions: 0.0. Total no. in groups: 10.0.
- Reading:
- 2nd reading
- Hours after challenge:
- 48
- Group:
- negative control
- Dose level:
- 0%
- No. with + reactions:
- 0
- Total no. in group:
- 4
- Remarks on result:
- other: Reading: 2nd reading. . Hours after challenge: 48.0. Group: negative control. Dose level: 0%. No with. + reactions: 0.0. Total no. in groups: 4.0.
- Reading:
- 2nd reading
- Hours after challenge:
- 48
- Group:
- test chemical
- Dose level:
- 100%
- No. with + reactions:
- 0
- Total no. in group:
- 10
- Remarks on result:
- other: Reading: 2nd reading. . Hours after challenge: 48.0. Group: test group. Dose level: 100%. No with. + reactions: 0.0. Total no. in groups: 10.0.
- Reading:
- 2nd reading
- Hours after challenge:
- 48
- Group:
- test chemical
- Dose level:
- 75%
- No. with + reactions:
- 0
- Total no. in group:
- 10
- Remarks on result:
- other: Reading: 2nd reading. . Hours after challenge: 48.0. Group: test group. Dose level: 75%. No with. + reactions: 0.0. Total no. in groups: 10.0.
Any other information on results incl. tables
One control animal was sacrificed on Day 21 due to respiratory problems. The absence of this animal was considered not to affect the purpose or integrity of the study.
No skin reactions were noted at the challenge sites of the test or control animals at 24 h or 48 h observations.
Body weight gain of the test group was comparable to those observed in the control group animals.
Applicant's summary and conclusion
- Interpretation of results:
- not sensitising
- Remarks:
- Migrated information Criteria used for interpretation of results: EU
- Conclusions:
- CLP: not classified
DSD: not classified
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