3,5-Heptanedione-1-(4-hydroxy-3-methoxyphenyl)-7-(4-hydroxyphenyl) and 3,5-Heptanedione-1,7-bis(4-hydroxyphenyl) and 3,5-Heptanedione-1,7-bis(4-hydroxy-3-methoxyphenyl)

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

Study period:

25 Days

Reliability:

1 (reliable without restriction)

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2012

Report date:

2012

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

OECD Guideline 202 (Daphnia sp. Acute Immobilisation Test)

Deviations:

no

GLP compliance:

yes

Test material

Test material information

Constituent 1

Reference substance name:

1,7-bis(4-hydroxy-3-methoxyphenyl)heptane-3,5-dione

EC Number:

900-021-3

Molecular formula:

3,5-Heptanedione-1-(4-hydroxy-3-methoxyphenyl)-7-(4-hydroxyphenyl) :C20 H22O5, 3,5-Heptanedione-1,7 -bis(4-hydroxyphenyl) : C19H20O4, 3,5-Heptanedione-1,7-bis(4-hydroxy-3-methoxyphenyl) : C21H24O6

IUPAC Name:

1,7-bis(4-hydroxy-3-methoxyphenyl)heptane-3,5-dione

Test material form:

solid: crystalline

Test solutions

Vehicle:

yes

Test organisms

Test organisms (species):

Daphnia magna

Study design

Test type:

static

Water media type:

freshwater

Limit test:

yes

Total exposure duration:

48 h

Test conditions

Reference substance (positive control):

yes

Results and discussion

Effect concentrations

Key result

Duration:

48 h

Dose descriptor:

EC50

Effect conc.:

>= 100 mg/L

Nominal / measured:

nominal

Conc. based on:

test mat.

Basis for effect:

mobility

Remarks on result:

other: Not significant

Applicant's summary and conclusion

Validity criteria fulfilled:

yes

Conclusions:

The substance did not cause any or significant immobilization or toxic effects in any of the Daphnia groups during the test period.
The EC50 was found to be greater than 100mg per litre.