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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

Administrative data

Endpoint:
short-term toxicity to aquatic invertebrates
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: The data are available from ECHA as data older than 12 years of age and no longer protected. The registrant has been unable to varify the quality of the original data

Data source

Reference
Reference Type:
other company data
Title:
Unnamed
Year:
1993

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
EU Method C.2 (Acute Toxicity for Daphnia)
GLP compliance:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
1,6-hexanediyl-bis(2-(2-(1-ethylpentyl)-3-oxazolidinyl)ethyl)carbamate
EC Number:
411-700-4
EC Name:
1,6-hexanediyl-bis(2-(2-(1-ethylpentyl)-3-oxazolidinyl)ethyl)carbamate
Cas Number:
140921-24-0
Molecular formula:
C32H62N4O6
IUPAC Name:
2-[3-(heptan-3-yl)-1,2-oxazolidin-2-yl]ethyl N-{6-[({2-[3-(heptan-3-yl)-1,2-oxazolidin-2-yl]ethoxy}carbonyl)amino]hexyl}carbamate

Sampling and analysis

Analytical monitoring:
no

Test solutions

Vehicle:
no
Details on test solutions:
Agitation using ultra turrax

Test organisms

Test organisms (species):
Daphnia magna

Study design

Test type:
static
Water media type:
not specified
Limit test:
no
Total exposure duration:
48 h

Test conditions

Hardness:
264.3 mg CaCO3/l

Results and discussion

Effect concentrationsopen allclose all
Duration:
24 h
Dose descriptor:
EC50
Effect conc.:
253 mg/L
Duration:
48 h
Dose descriptor:
EC50
Effect conc.:
193 mg/L
Duration:
48 h
Dose descriptor:
NOEC
Effect conc.:
62.5 mg/L

Any other information on results incl. tables

EC50 was determined by probit-analysis

The products reacts with water generating water and solid products. Therefore exposure was monitored by nominal exposure only.

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Conclusions:
The EC50 of the substance is 193 mg/l with Daphnia magna, with a NOEC of 62.5 mg/l
Executive summary:

Exposure of the substance to Daphnia magna has been undertaken over a 48 hour period. The EC50 of the substance to the Daphnia magna is 193 mg/l with Daphnia magna, with a NOEC of 62.5 mg/l.