Registration Dossier

Environmental fate & pathways

Biodegradation in water: screening tests

Administrative data

Endpoint:
biodegradation in water: ready biodegradability
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)

Data source

Reference
Reference Type:
review article or handbook
Title:
biodegradation and fish toxicity of nonionic surfactants
Author:
Yoshimura K et al
Year:
1986
Bibliographic source:
J Amer Oil Chem Soc 63

Materials and methods

Test guideline
Qualifier:
no guideline available
Principles of method if other than guideline:
the guideline is unknown
GLP compliance:
not specified

Test material

Reference
Name:
Unnamed
Type:
Constituent

Results and discussion

% Degradationopen allclose all
Parameter:
other: mixture of polyethylene glycol linear nonylphenyl ethers utilizing sediment inocula
Value:
97
Sampling time:
30 d
Remarks on result:
other: standing sample
Parameter:
other: on a mixture of polyethylene glycol linear nonylphenyl ethers utilizing sediment inocula
Value:
98
Sampling time:
30 d
Remarks on result:
other: stirred sample
Parameter:
other: die-away test conducted on a mixture of polyethylene glycol linear nonylphenyl ethers with an inoculum obtained from the Arakawa River, Horikiri, Japan
Value:
98
Sampling time:
30 d
Remarks on result:
other: standing samples
Parameter:
other: die-away test conducted on a mixture of polyethylene glycol linear nonylphenyl ethers with an inoculum obtained from the Arakawa River, Horikiri, Japan
Value:
99
Sampling time:
30 d
Remarks on result:
other: stirred samples

Applicant's summary and conclusion

Interpretation of results:
readily biodegradable