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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Endpoint:
skin irritation: in vivo
Type of information:
experimental study
Adequacy of study:
key study
Study period:
1986-04-22 to 1986-04-25
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: well performed OECD and GLP guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1986
Report date:
1986

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 404 (Acute Dermal Irritation / Corrosion)
Deviations:
no
GLP compliance:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
2-hydroxybenzimidazole
EC Number:
210-412-4
EC Name:
2-hydroxybenzimidazole
Cas Number:
615-16-7
Molecular formula:
C7H6N2O
IUPAC Name:
2-hydroxybenzimidazole

Test animals

Species:
rabbit
Strain:
New Zealand White

Test system

Type of coverage:
semiocclusive
Preparation of test site:
shaved
Vehicle:
other: Polyethylenglycol 400
Controls:
no
Amount / concentration applied:
500 mg Benzimidazolon in 0.35 ml Polyethylenglycol
Duration of treatment / exposure:
4 hrs
Observation period:
total of 72 hrs
Number of animals:
3

Results and discussion

In vivo

Resultsopen allclose all
Irritation parameter:
erythema score
Basis:
animal #1
Time point:
other: 30-60 min
Score:
1
Reversibility:
fully reversible within: 24 h
Irritation parameter:
erythema score
Basis:
animal #2
Time point:
other: 30 - 60 min
Score:
1
Reversibility:
fully reversible within: 24 h
Irritation parameter:
erythema score
Basis:
animal #3
Time point:
other: 30 - 60 min
Score:
1
Reversibility:
fully reversible within: 24 h
Irritation parameter:
erythema score
Basis:
animal: each #1, 2 and 3
Time point:
other: 24 hrs, 48 hrs, 72 hrs
Score:
0
Irritation parameter:
edema score
Basis:
animal: each #1, 2 and 3
Time point:
other: 30- 60 min, 24 hrs, 48 hrs, 72 hrs
Score:
0

Applicant's summary and conclusion

Interpretation of results:
not irritating
Remarks:
Migrated information Criteria used for interpretation of results: expert judgment
Conclusions:
With reference to the present study the test item is neither a skin irritant nor corrosive to skin.
Executive summary:

With reference to the present study the test item is neither a skin irritant nor corrosive to skin.

The judgement is based on the mean (of 24, 48 and 72 h) dermal irritation scores tabulated below:

Erythema (animal # 1/2/3): 0.0/0.0/0.0

Oedema (animal # 1/2/3): 0.0/0.0/0.0