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Ecotoxicological information

Toxicity to microorganisms

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Endpoint:
toxicity to microorganisms
Type of information:
experimental study
Adequacy of study:
weight of evidence
Study period:
August 08, 1989
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
abstract
Principles of method if other than guideline:
Only short abstract available. No information about the method used.
GLP compliance:
not specified
Details on sampling:
- Concentrations: 19.5, 39, 78, 156, 312 mg/l
Test organisms (species):
other: No information available
Total exposure duration:
3 h
Test temperature:
25 °C
pH:
7.1 - 7.2
Dose descriptor:
EC10
Effect conc.:
ca. 40 mg/L
Remarks on result:
other: No further information available
Dose descriptor:
EC50
Effect conc.:
ca. 77 mg/L
Remarks on result:
other: No further information available
Dose descriptor:
other: EC90
Effect conc.:
ca. 213 mg/L
Remarks on result:
other: No further information available

Only short abstract available. No further information available.

Validity criteria fulfilled:
not specified
Conclusions:
EC10 = 40 mg/l
EC50 = 77 mg/l
EC90 = 213 mg/l
Executive summary:

Method

The test was conducted with an unspecified method as only short abstract is available for this study. No information on the composition is available.

Conclusion

EC10 = 40 mg/l

EC50 = 77 mg/l

EC90 = 213 mg/l

Endpoint:
toxicity to microorganisms
Type of information:
experimental study
Adequacy of study:
weight of evidence
Study period:
March 25, 1976
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
abstract
Principles of method if other than guideline:
Internal method 58
GLP compliance:
not specified
Total exposure duration:
3 h
Duration:
3 h
Dose descriptor:
EC50
Effect conc.:
ca. 50 mg/L
Nominal / measured:
not specified
Conc. based on:
not specified
Basis for effect:
not specified
Validity criteria fulfilled:
not specified
Conclusions:
EC50 = 50 mg/l
Executive summary:

Only short abstract available.

EC50 = 50 mg/l

Description of key information

EC50 = 50 mg/l

Key value for chemical safety assessment

Additional information

Only two short abstract are available on toxicity to microorganisms. No details about the method used.

The EC50 value calculated in the first study was 77 mg/l and in the second study 50 mg/l.