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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Currently viewing:

Administrative data

Endpoint:
skin irritation: in vivo
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment
Justification for type of information:
Sodium Benzotriazolate is expected to be skin corrosive because the analogue Sodium Tolyltriazolate has shown skin corrosive properties in a well performed study (Klimisch score 1). The source chemical Sodium Tolyltriazolate is sufficiently similar to read-across towards Sodium Benzotriazolate.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1984

Materials and methods

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

Test material

Constituent 1
Chemical structure
Reference substance name:
Sodium 4(or 5)-methyl-1H-benzotriazolide
EC Number:
265-004-9
EC Name:
Sodium 4(or 5)-methyl-1H-benzotriazolide
Cas Number:
64665-57-2
Molecular formula:
C7H7N3.Na
IUPAC Name:
sodium 4-methylbenzotriazol-1-ide
Test material form:
other: solution
Details on test material:
- Name of test material (as cited in study report): Preventol CI 7-50
- Molecular formula (if other than submission substance): C7H6N3Na
- Molecular weight (if other than submission substance): 155.13 g/mol
- Smiles notation (if other than submission substance): [Na+].CC1=C2N=N[N-]C2=CC=C1; [Na+].CC1=CC=C2[N-]N=NC2=C1
- InChl (if other than submission substance): InChI=1S/C7H6N3.Na/c1-5-2-3-6-7(4-5)9-10-8-6;/h2-4H,1H3;/q-1;+1; InChI=1S/C7H6N3.Na/c1-5-3-2-4-6-7(5)9-10-8-6;/h2-4H,1H3;/q-1;+1
- Structural formula attached as image file (if other than submission substance):
- Substance type: organic
- Physical state: solved

Test animals

Species:
rabbit
Strain:
New Zealand White
Details on test animals or test system and environmental conditions:
TEST ANIMALS
- Source: Hacking & Churchill Ltd. Huntingdon, UK
- Age at study initiation: no data
- Weight at study initiation: no data
- Housing: individual cages
- Diet: Ssniff K 4 ad libitum
- Water: ad libitum

ENVIRONMENTAL CONDITIONS
- Temperature (°C): 19 - 25
- Humidity (%): 40 - 60
- Air changes (per hr): no data
- Photoperiod (hrs dark / hrs light): 12

Test system

Type of coverage:
semiocclusive
Preparation of test site:
clipped
Vehicle:
unchanged (no vehicle)
Controls:
no
Amount / concentration applied:
0.5 ml
Duration of treatment / exposure:
4 h
Observation period:
14 d
Number of animals:
3
Details on study design:
TEST SITE
- Area of exposure: 2.5 * 2.5 cm2
- Type of wrap if used: elastic tape

REMOVAL OF TEST SUBSTANCE
- Washing: with water
- Time after start of exposure: 4 h

SCORING SYSTEM: Draize

Results and discussion

In vivo

Resultsopen allclose all
Irritation parameter:
erythema score
Basis:
animal #1
Time point:
24 h
Score:
2
Max. score:
4
Irritation parameter:
edema score
Basis:
animal #1
Time point:
24 h
Score:
3
Max. score:
4
Irritation parameter:
erythema score
Basis:
animal #2
Time point:
24 h
Score:
4
Max. score:
4
Irritation parameter:
edema score
Basis:
animal #2
Time point:
24 h
Score:
3
Max. score:
4
Irritation parameter:
erythema score
Basis:
animal #3
Time point:
24 h
Score:
4
Max. score:
4
Irritation parameter:
edema score
Basis:
animal #3
Time point:
24 h
Score:
3
Max. score:
4
Irritation parameter:
erythema score
Basis:
animal #1
Time point:
48 h
Score:
2
Max. score:
4
Irritation parameter:
edema score
Basis:
animal #1
Time point:
48 h
Score:
2
Max. score:
4
Irritation parameter:
erythema score
Basis:
animal #2
Time point:
48 h
Score:
4
Max. score:
4
Irritation parameter:
edema score
Basis:
animal #2
Time point:
48 h
Score:
2
Max. score:
4
Irritation parameter:
erythema score
Basis:
animal #3
Time point:
48 h
Score:
4
Max. score:
4
Irritation parameter:
edema score
Basis:
animal #3
Time point:
48 h
Score:
2
Max. score:
4
Irritation parameter:
erythema score
Basis:
animal #1
Time point:
72 h
Score:
1
Max. score:
4
Irritation parameter:
edema score
Basis:
animal #1
Time point:
72 h
Score:
1
Max. score:
4
Irritation parameter:
erythema score
Basis:
animal #2
Time point:
72 h
Score:
4
Max. score:
4
Remarks on result:
other: The animal was killed after 96 h
Irritation parameter:
edema score
Basis:
animal #2
Time point:
72 h
Score:
2
Max. score:
4
Remarks on result:
other: The animal was killed after 96 h
Irritation parameter:
erythema score
Basis:
animal #3
Time point:
72 h
Score:
4
Max. score:
4
Remarks on result:
other: The animal was killed after 96 h
Irritation parameter:
edema score
Basis:
animal #3
Time point:
72 h
Score:
2
Max. score:
4
Remarks on result:
other: The animal was killed after 96 h
Irritation parameter:
erythema score
Basis:
animal #1
Time point:
7 d
Score:
4
Max. score:
4
Irritation parameter:
edema score
Basis:
animal #1
Time point:
7 d
Score:
0
Max. score:
4
Irritant / corrosive response data:
see irritation / corrosion parameter
see irritation / corrosion parameter
Animals 2 and 3 showed a gray black skin discolouration after 1 h observation time.
Animals 2 and 3 showed bloody eschar at the site of application after 24 h observation time.

Applicant's summary and conclusion

Interpretation of results:
Category 1B (corrosive) based on GHS criteria
Conclusions:
The study is well performed and gives following results for the Endpoint:
The substance is corrosive
Executive summary:

For Sodium tolyltriazolate a well-conducted in vivo study is available showing skin corrosion. This means that a similar result for Sodium Benzotriazolate can be anticipated.

 

Sodium Benzotriazolate is skin corrosive.

A DNEL for oral, dermal and/or inhalation route can be based on this information.

Classification and labeling are needed for this endpoint.

A risk characterization will be performed because the substance is classified.