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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Ecotoxicological information

Toxicity to microorganisms

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
activated sludge respiration inhibition testing
Type of information:
experimental study
Adequacy of study:
key study
Study period:
1992
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study without detailed documentation
Qualifier:
according to guideline
Guideline:
OECD Guideline 209 (Activated Sludge, Respiration Inhibition Test
Version / remarks:
1984
Principles of method if other than guideline:
N/A
GLP compliance:
not specified
Test organisms (species):
activated sludge
Limit test:
no
Total exposure duration:
30 min
pH:
7.0
Key result
Duration:
30 min
Dose descriptor:
EC50
Effect conc.:
2.3 mg/L
Conc. based on:
other: CN-
Validity criteria fulfilled:
not specified
Conclusions:
Based on an experimental ASRIT study performed according to the OECD 209 guideline, the substance exhibits an EC50 of 2.3 mg/L
Executive summary:

Based on an experimental ASRIT study performed according to the OECD 209 guideline, the substance exhibits an EC50 of 2.3 mg/L

Description of key information

Following a read-across approach based on an experimental study from an activated sludge respiration inhibition assay, conducted in accordance with the guideline OECD 209 on the source substance potassium cyanide (Strotmann, 1992), a 30-minutes EC50 of 2.3 mg CN-/L is considered for the registered substance.

Key value for chemical safety assessment

EC50 for microorganisms:
2.3 mg/L

Additional information