2-Propenal, 3-(5,5-dimethyl-1,3-dioxan-2-yl)-2-methyl-, (2E)-

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: Guideline study, non-GLP, limitations in reporting but otherwise adequate for assessment.

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

1990

Report date:

1990

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

EU Method C.2 (Acute Toxicity for Daphnia)

GLP compliance:

not specified

Test material

Test material information

Constituent 1

Reference substance name:

(2E)-3-(5,5-dimethyl-1,3-dioxan-2-yl)-2-methylprop-2-enal

EC Number:

610-698-4

Cas Number:

51575-61-2

Molecular formula:

C10 H16 O3

IUPAC Name:

(2E)-3-(5,5-dimethyl-1,3-dioxan-2-yl)-2-methylprop-2-enal

Details on test material:

- Name of test material (as cited in study report): MBDA

Sampling and analysis

Analytical monitoring:

no

Test solutions

Vehicle:

no

Details on test solutions:

A stock solution of 500 mg/L was prepared after that it was diluted to the appropriate test concentrations

Test organisms

Test organisms (species):

Daphnia magna

Details on test organisms:

Source: Institute national de recherche chimique appliquee, France. The stem culture has been in the BASF ecology lab since 1978

Study design

Test type:

static

Water media type:

freshwater

Limit test:

no

Total exposure duration:

48 h

Test conditions

Hardness:

total: 2.7 ± 0.5 mmol/L

Test temperature:

20.3 °C

pH:

8.04-8.38

Dissolved oxygen:

8.51-9.05 mg/L

Nominal and measured concentrations:

Nominal concentrations: 0 (control), 3.9, 7.8, 15.6, 31.3, 62.5, 125, 250 and 500 mg/L

Details on test conditions:

- Photoperiod: 16h:8h day:night

Reference substance (positive control):

not specified

Results and discussion

Effect concentrations

Duration:

48 h

Dose descriptor:

EC50

Effect conc.:

85.44 mg/L

Nominal / measured:

nominal

Conc. based on:

test mat.

Basis for effect:

mobility

Remarks on result:

other: 95% C.L.: 72.3-101.0 mg/L

Any other information on results incl. tables

Concentration (mg/L)	Mobile animals after:
	0h	3h	6h	24h	48h
3.906	20	20	20	20	20
7.81	20	20	20	20	20
15.6	20	20	20	20	20
31.3	20	20	20	20	20
62.5	20	20	19	19	16
125	20	19	19	17	3
250	20	12	1	0	0
500	20	0	0	0	0
0	20	20	20	20	20