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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
acute toxicity: inhalation
Type of information:
migrated information: read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
other information
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
other: secondary literature - U.S. Environmental Protection Agency, Hazard characterisation document sponsored Chemical: 2H-Benzimidazole-2-thione, 1,3-dihydro-, 4(or 5)-methyl-,zinc salt

Data source

Reference
Title:
Unnamed

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 403 (Acute Inhalation Toxicity)
Principles of method if other than guideline:
Sprague-Dawley rats (5 per dose) were exposed nose-only to 0 or 2.12 mg/l of an aerosol of methyl-2-mercaptobenzimidazole, zinc salt for 4 hours
GLP compliance:
yes
Test type:
standard acute method

Test material

Constituent 1
Chemical structure
Reference substance name:
1,3-dihydro-4(or 5)-methyl-2H-benzimidazole-2-thione, zinc salt
EC Number:
262-872-0
EC Name:
1,3-dihydro-4(or 5)-methyl-2H-benzimidazole-2-thione, zinc salt
Cas Number:
61617-00-3
Molecular formula:
C8H8N2S.1/2Zn
IUPAC Name:
Zinc bis[4(or 5)-methyl-2-thioxo-2,3-dihydrobenzimidazol-1-ide]
Details on test material:
methyl-2-mercaptobenzimidazole, zinc salt, purity ~ 95%

Test animals

Species:
rat
Strain:
Sprague-Dawley
Sex:
male/female

Administration / exposure

Route of administration:
inhalation: aerosol
Type of inhalation exposure:
nose only
Vehicle:
not specified
Duration of exposure:
4 h
Concentrations:
0 or 2.12 mg/l
No. of animals per sex per dose:
10 male/female animals
Control animals:
yes

Results and discussion

Effect levels
Sex:
male/female
Dose descriptor:
discriminating conc.
Effect level:
2.12 mg/L air
Based on:
test mat.
Exp. duration:
4 h

Any other information on results incl. tables

There was no fatalities

Applicant's summary and conclusion