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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Endpoint:
short-term toxicity to fish
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1995
Report date:
1995

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 203 (Fish, Acute Toxicity Test)
GLP compliance:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
3-cyano-3,5,5-trimethylcyclohexanone
EC Number:
411-490-4
EC Name:
3-cyano-3,5,5-trimethylcyclohexanone
Cas Number:
7027-11-4
Molecular formula:
C10 H15 N O
IUPAC Name:
3-cyano-3,5,5-trimethylcyclohexanone
Details on test material:
Isophoronnitril, purity 99.02 %

Sampling and analysis

Analytical monitoring:
yes

Test organisms

Test organisms (species):
Danio rerio (previous name: Brachydanio rerio)

Study design

Test type:
static
Water media type:
freshwater
Limit test:
no
Total exposure duration:
96 h

Test conditions

Nominal and measured concentrations:
The analytically detected concentrations were initially in the range of 98.8 % - 104.4 % and after 96 h between 86.6 % - 96.3 % of the nominal concentration.

Results and discussion

Effect concentrations
Duration:
96 h
Dose descriptor:
LC50
Effect conc.:
> 10 - 22 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
mortality (fish)

Any other information on results incl. tables

Sublethal observations / clinical signs:
                                  nominal       measured
             (mg/L) (mg/L)
- LC50 (96 h)
        >10 - < 22 >9.3 - <21
- maximum concentration
tested causing no mortality:
       4.64 4.02
- minimum concentration tested
causing 100 % mortality:
      21.5 20.7
- no observed effect
concentration (NOEC):
       4.64 4.02

Symptoms: tumbling at 20.7 mg/L (measured concentration)

Applicant's summary and conclusion