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Ecotoxicological information

Toxicity to soil microorganisms

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Administrative data

Endpoint:
toxicity to soil microorganisms
Type of information:
experimental study
Adequacy of study:
other information
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
other: Documentation insufficient for assessment

Data source

Reference
Reference Type:
publication
Title:
The Effect of Both Powdered and Liquid Rubber Additives on the Growth of Soil Microorganisms
Author:
Williams GR
Year:
1984
Bibliographic source:
International Biodetoriation 1984 Vol. 20 No. 3

Materials and methods

Principles of method if other than guideline:
The substance was incorporated into nutrient agar, at varying concentrations, approximating the levels of incorporation in rubber formulations, and inoculated with soil extract (3.0 E+07 organisms per ml).
GLP compliance:
not specified

Test material

Constituent 1
Chemical structure
Reference substance name:
Benzothiazole-2-thiol
EC Number:
205-736-8
EC Name:
Benzothiazole-2-thiol
Cas Number:
149-30-4
Molecular formula:
C7H5NS2
IUPAC Name:
1,3-benzothiazole-2-thiol
Details on test material:
purity not specified

Sampling and analysis

Analytical monitoring:
not specified

Test organisms

Test organisms (inoculum):
soil

Study design

Total exposure duration:
14 d

Test conditions

Test temperature:
25 °C

Results and discussion

Effect concentrationsopen allclose all
Duration:
14 d
Dose descriptor:
other: LD50
Effect conc.:
0.1 other: %
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
other: growth inhibition
Duration:
4 d
Dose descriptor:
other: LD50
Effect conc.:
0.1 other: %
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
other: growth inhibition
Details on results:
the effect concentrations were reported as <= 0.1 %

Any other information on results incl. tables

It is not clear how the LD50 was determined.

The substance was classified as highly toxic.

Applicant's summary and conclusion