Calcination products of titanium dioxide, tin monoxide, zinc oxide and dihydrogen wolframate

Toxicity to soil macroorganisms except arthropods

Administrative data

Endpoint:

toxicity to soil macroorganisms except arthropods: short-term

Type of information:

experimental study

Adequacy of study:

supporting 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:

2018

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

OECD Guideline 207 (Earthworm, Acute Toxicity Tests)

GLP compliance:

yes (incl. QA statement)

Test material

Test material information

Constituent 1

Reference substance name:

Calcination product of titanium dioxide, tin monoxide, zinc oxide and dihydrogen wolframate

EC Number:

941-788-4

Molecular formula:

Ti 1 Sn 0,6 Zn 0,5 W 0,15 O 4

IUPAC Name:

Calcination product of titanium dioxide, tin monoxide, zinc oxide and dihydrogen wolframate

Details on test material:

- Physical state: solid, red
- Analytical purity: > 99 %
- Storage condition of test material: room temperature

Sampling and analysis

Analytical monitoring:

no

Test substrate

Vehicle:

no

Details on preparation and application of test substrate:

- Method of mixing into soil (if used): The test substance is insoluble in water. Therefore the weighed portion was mixed with quartz sand and then formulated in artificial soil. Portions of about 750 g moistened substrate were given to the test pots.

Test organisms

Test organisms (species):

Eisenia fetida

Animal group:

annelids

Details on test organisms:

TEST ORGANISM
- Source: Jiang Su province Jurong Stock Farm
- Weight at test initiation (mean and range, SD): 300 - 600 mg

ACCLIMATION
- Acclimation period: 1 day before begin of exposure
- Acclimation conditions (same as test or not): same

Study design

Study type:

laboratory study

Substrate type:

artificial soil

Limit test:

yes

Total exposure duration:

14 d

Test conditions

Test temperature:

19.8 - 20.3 °C

Moisture:

40 - 60 % WHC

Details on test conditions:

TEST SYSTEM
- Test container (material, size): 1 L glass vessels covered with a lid
- Amount of soil or substrate: 750 g wt
- No. of organisms per container (treatment): 10
- No. of replicates per treatment group: 4
- No. of replicates per control: 4


OTHER TEST CONDITIONS
- Photoperiod: continous light
- Light intensity: 660 LUX


EFFECT PARAMETERS MEASURED (with observation intervals if applicable) :
Mortality after 7 days and at the end of exposure

Nominal and measured concentrations:

Nominal test concentrations (mg/kg dry mass): 1000

Reference substance (positive control):

yes

Remarks:

2-chloroacetamide

Results and discussion

Effect concentrations

Duration:

14 d

Dose descriptor:

LC50

Effect conc.:

> 1 000 mg/kg soil dw

Nominal / measured:

nominal

Conc. based on:

test mat.

Basis for effect:

mortality

Results with reference substance (positive control):

LC50= 17.6 mg/kg dry matter