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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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 (non-LLNA)
Type of information:
migrated information: read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
key study
Study period:
April 1998
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Full study but only available as a letter report.

Data source

Reference
Reference Type:
other company data
Title:
Unnamed
Year:
1998

Materials and methods

Test guideline
Qualifier:
equivalent or similar to guideline
Guideline:
OECD Guideline 406 (Skin Sensitisation)
Deviations:
not specified
GLP compliance:
not specified
Type of study:
guinea pig maximisation test
Justification for non-LLNA method:
GMPT was run before the requirement for LLNA testing so LLNA testing was not conducted for animal welfare reasons.

Test material

Constituent 1
Reference substance name:
Liquid boron 135 g/L
IUPAC Name:
Liquid boron 135 g/L
Details on test material:
- Name of test material (as cited in study report): Liquid boron 135 g/L

In vivo test system

Test animals

Species:
guinea pig
Strain:
Dunkin-Hartley
Sex:
female
Details on test animals and environmental conditions:
No data

Study design: in vivo (non-LLNA)

Induction
Route:
intradermal
Vehicle:
water
Concentration / amount:
0.1% and 0.3% liquid boron in water
Challengeopen allclose all
Route:
epicutaneous, occlusive
Vehicle:
water
Concentration / amount:
0.1 and 0.3% liquid boron in water
No. of animals per dose:
10
Details on study design:
MAIN STUDY
A. INDUCTION EXPOSURE
- No. of exposures: 1
- Exposure period: 48 hours
- Site: Dorsum overlying the scapulae
- Frequency of applications: Once
- Concentrations: 0.1 ml persite

B. CHALLENGE EXPOSURE
- No. of exposures: 1
- Exposure period: 24 and 48 hours
- Site: Right flank
- Concentrations: 0.3. 0.1% liquid boron in water
- Evaluation (hr after challenge): 24 and 48 hours
Positive control substance(s):
not specified

Results and discussion

In vivo (non-LLNA)

Resultsopen allclose all
Reading:
1st reading
Hours after challenge:
24
Group:
test chemical
Dose level:
0.3%
No. with + reactions:
3
Total no. in group:
10
Remarks on result:
other: Reading: 1st reading. . Hours after challenge: 24.0. Group: test group. Dose level: 0.3%. No with. + reactions: 3.0. Total no. in groups: 10.0.
Reading:
1st reading
Hours after challenge:
24
Group:
test chemical
Dose level:
0.1%
No. with + reactions:
1
Total no. in group:
10
Remarks on result:
other: Reading: 1st reading. . Hours after challenge: 24.0. Group: test group. Dose level: 0.1%. No with. + reactions: 1.0. Total no. in groups: 10.0.
Reading:
2nd reading
Hours after challenge:
48
Group:
test chemical
Dose level:
0.3%
No. with + reactions:
2
Total no. in group:
10
Remarks on result:
other: Reading: 2nd reading. . Hours after challenge: 48.0. Group: test group. Dose level: 0.3%. No with. + reactions: 2.0. Total no. in groups: 10.0.
Reading:
2nd reading
Hours after challenge:
48
Group:
test chemical
Dose level:
0.1%
No. with + reactions:
1
Total no. in group:
10
Remarks on result:
other: Reading: 2nd reading. . Hours after challenge: 48.0. Group: test group. Dose level: 0.1%. No with. + reactions: 1.0. Total no. in groups: 10.0.

Applicant's summary and conclusion

Interpretation of results:
not sensitising
Remarks:
Migrated information
Conclusions:
It was concluded that liquid boron 135 g/L was practically devoid of potential to cause sensitisation.
Executive summary:

Not available.