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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

Short-term toxicity to aquatic invertebrates

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Administrative data

Endpoint:
short-term toxicity to aquatic invertebrates
Type of information:
experimental study
Adequacy of study:
supporting study
Study period:
1988
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
other: Documentation insufficient for assessment

Data source

Reference
Reference Type:
other company data
Title:
Unnamed
Year:
1988

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: DIN 38412 part 11
Deviations:
not specified
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
2,2,4(or 2,4,4)-trimethyladipic acid
EC Number:
258-556-7
EC Name:
2,2,4(or 2,4,4)-trimethyladipic acid
Cas Number:
53445-37-7
Molecular formula:
C9H16O4
IUPAC Name:
2,2,4-trimethylhexanedioic acid; 2,4,4-trimethylhexanedioic acid
Details on test material:
2,2,4(or 2,4,4)-Trimethylhexanedioic acid of Hüls AG, no specific data on purity

Sampling and analysis

Analytical monitoring:
no

Test solutions

Vehicle:
no

Test organisms

Test organisms (species):
Daphnia magna

Study design

Test type:
static
Water media type:
freshwater
Limit test:
no
Total exposure duration:
24 h
Post exposure observation period:
none

Test conditions

Reference substance (positive control):
not specified

Results and discussion

Effect concentrations
Duration:
24 h
Dose descriptor:
EC50
Effect conc.:
88.7 mg/L
Nominal / measured:
nominal

Applicant's summary and conclusion

Conclusions:
The 24 h-EC50 of 2,2,4(or 2,4,4)-trimethylhexanedioic acid for Daphnia magna was determined as 88.7 mg/l.
Executive summary:

The 24 h-EC50 of 2,2,4(or 2,4,4)-trimethylhexanedioic acid for Daphnia magna was determined according to the German standard DIN 38412 part 11 as 88.7 mg/l.