Sodium [N-[2-[bis(carboxymethyl)amino]ethyl]-N-(2-hydroxyethyl)glycinato(4-)]ferrate(1-)

Other distribution data

Administrative data

Endpoint:

other distribution data

Type of information:

migrated information: read-across from supporting substance (structural analogue or surrogate)

Adequacy of study:

supporting study

Study period:

1997

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: Study well documented, meets generally accepted scientific procedures, acceptable for assessment

Data source

Reference

Reference Type:

publication

Title:

Distribution and Transportation of Ethylenediaminetetraacetic acid and Diethylenetriaminepentaacetic acid in lake water and sediment

Author:

Sillanpaa et al

Year:

1997

Bibliographic source:

Chemosphere, Vol.35, No.12, pp. 2797-2806

Materials and methods

Principles of method if other than guideline:

The concentrations of EDTA and DTPA were measured by gas chromatography in Finnish lake waters and sediments influenced by pulp and paper industry.

GLP compliance:

no

Type of study:

other:

Media:

other:

Test material

Test material information

Constituent 1

Reference substance name:

N-carboxymethyliminobis(ethylenenitrilo)tetra(acetic acid)

EC Number:

200-652-8

EC Name:

N-carboxymethyliminobis(ethylenenitrilo)tetra(acetic acid)

Cas Number:

67-43-6

IUPAC Name:

N,N-bis{2-[bis(carboxymethyl)amino]ethyl}glycine

Details on test material:

- Name of test material (as cited in study report): EDTA and DTPA

Results and discussion

Any other information on results incl. tables

Concentrations of EDTA in lake water ranged from <1.0 to 11.4 µg/1. Elevated concentrations of EDTA were observed downstream of the mills. The decline in the use of EDTA in total-chlorine-free (TCF) processes is clearly shown by decreased waste water and lake water concentrations of EDTA. Sediment concentrations of EDTA varied between 80 and 310 µg/kg.

In contrast to EDTA, DTPA was not found in lake waters and sediments

Applicant's summary and conclusion

Conclusions:

Concentrations of EDTA in lake water ranged from <1.0 to 11.4 µg/1. Elevated concentrations of EDTA were observed downstream of the mills. The decline in the use of EDTA in total-chlorine-free (TCF) processes is clearly shown by decreased waste water and lake water concentrations of EDTA. Sediment concentrations of EDTA varied between 80 and 310 µg/kg.
In contrast to EDTA, DTPA was not found in lake waters and sediments