Registration Dossier

Environmental fate & pathways

Additional information on environmental fate and behaviour

Administrative data

Endpoint:
additional information on environmental fate and behaviour
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2016
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP and OECD guideline compliant study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2016

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
other: OECD 29
Deviations:
no
Principles of method if other than guideline:
The transformation/dilution of the individual inorganic building blocks of this substance (i.e., the elements Sn and Zn) were estimated according to OECD 29.
GLP compliance:
yes (incl. certificate)

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
- Physical state: solid, red
- Analytical purity: > 99 %
- Storage condition of test material: room temperature

Results and discussion

Any other information on results incl. tables

The 24 h screening measurements were performed with a concentration of the test item of 100 mg/l. At pH = 6, approx. 0.23 mg/L Zn and less than 0.001 mg/L Sn were found in the solution, after 24 hours of leaching time. The same procedure was performed at pH = 8.5 and the concentration of both metals were found to be less than 0.03 mg/l. Therefore, the full test was conducted at the most relevant pH with respect to ecotoxicology, i.e. at pH 6. The results are presented in the following tables:

Sampel time [h]

Metal concentration at ca. 1 mg/L loading

Zn [mg/L]

Sn [mg/L]

24

< 0.005

0.006

< 0.005

< 0.001

< 0.001

< 0.001

48

< 0.005

0.011

< 0.005

< 0.001

< 0.001

< 0.001

72

< 0.005

0.010

< 0.005

< 0.001

< 0.001

< 0.001

96

0.005

0.009

< 0.005

< 0.001

< 0.001

< 0.001

168

0.007

0.010

0.005

< 0.001

< 0.001

< 0.001

 

Sampel time [h]

Metal concentration at ca. 10 mg/L

Zn [mg/L]

Sn [mg/L]

24

0.025

0.024

0.026

< 0.001

< 0.001

< 0.001

48

0.026

0.025

0.027

< 0.001

< 0.001

< 0.001

72

0.025

0.025

0.028

< 0.001

< 0.001

< 0.001

96

0.021

0.021

0.025

< 0.001

< 0.001

< 0.001

168

0.023

0.023

0.026

< 0.001

< 0.001

< 0.001

 

Sampel time [h]

Metal concentration at ca. 100 mg/L

Zn [mg/L]

Sn [mg/L]

24

0.22

0.22

0.22

0.001

0.001

0.002

48

0.22

0.22

0.22

0.001

< 0.001

0.001

72

0.22

0.22

0.22

< 0.001

< 0.001

0.001

96

0.19

0.19

0.21

< 0.001

< 0.001

0.001

168

0.19

0.19

0.20

< 0.001

< 0.001

< 0.001

Applicant's summary and conclusion