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Ecotoxicological information

Toxicity to microorganisms

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Administrative data

Endpoint:
toxicity to microorganisms
Type of information:
experimental study
Adequacy of study:
supporting study
Study period:
1987-11-25
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
other: Basic data given: comparable to standards. No GLP. Very limited documentation.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1988
Report Date:
1988

Materials and methods

Test guideline
Qualifier:
no guideline available
Guideline:
other: Bringmann-Kühn test similar to later implemented DIN 38412 part 8
Principles of method if other than guideline:
Bringmann-Kühn test
GLP compliance:
no

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
other: liquid
Details on test material:
- Name of test material (as cited in study report): MAPTAC

Sampling and analysis

Analytical monitoring:
not specified
Details on sampling:
no data

Test solutions

Vehicle:
no
Details on test solutions:
no data

Test organisms

Test organisms (species):
Pseudomonas putida
Details on inoculum:
no data

Study design

Test type:
not specified
Water media type:
not specified
Limit test:
yes
Total exposure duration:
16 h
Remarks on exposure duration:
not given in test report, but standard exposure time in the Bringmann-Kühn test is 16 h
Post exposure observation period:
no

Test conditions

Hardness:
no data
Test temperature:
no data
pH:
no data
Dissolved oxygen:
no data
Salinity:
no data
Nominal and measured concentrations:
not given in the report
Details on test conditions:
TEST CONCENTRATIONS
not given in the report
Reference substance (positive control):
not specified

Results and discussion

Effect concentrations
Duration:
16 h
Dose descriptor:
EC10
Effect conc.:
18 000 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
growth inhibition
Details on results:
- sample insoluble in water
Results with reference substance (positive control):
no data

Applicant's summary and conclusion

Validity criteria fulfilled:
not specified
Conclusions:
In this study (Bringmann-Kühn test), the EC10 of MAPTAC in Pseudomonas putida was 18000 mg/L (9000 mg a.i./L).
Executive summary:

In a 16-h toxicity study conducted according to the Bringmann-Kühn test, cultures of Pseudomonas putida were exposed to MAPTAC (tested concentrations not given in the report).

The EC10 was 18000 mg/L (corresponding to 9000 mg a.i./L).

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