Registration Dossier

Administrative data

Endpoint:
monitoring data
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
secondary literature
Remarks:
Relatively well documented literature paper; reliability unassignable because sampling schedule, methods, storage etc. not validated.

Data source

Reference
Reference Type:
review article or handbook
Title:
The Behaviour of Phosphonates in Wastewater Treatment Plants of Switzerland
Author:
Nowack B
Year:
1998
Bibliographic source:
Wat. Res. Vol. 32, No. 4, pp 1271-1279

Materials and methods

Media:
surface water

Test material

Constituent 1
Chemical structure
Reference substance name:
[[(phosphonomethyl)imino]bis[ethane-2,1-diylnitrilobis(methylene)]]tetrakisphosphonic acid
EC Number:
239-931-4
EC Name:
[[(phosphonomethyl)imino]bis[ethane-2,1-diylnitrilobis(methylene)]]tetrakisphosphonic acid
Cas Number:
15827-60-8
Molecular formula:
C9H28N3O15P5
IUPAC Name:
[(bis{2-[bis(phosphonomethyl)amino]ethyl}amino)methyl]phosphonic acid
Test material form:
solid - liquid: aqueous solution

Results and discussion

Concentration
Country:
Switzerland
Location:
Waste water treatment plant
Substance or metabolite:
substance
Conc.:
ca. 0.03 - ca. 0.46 mg/L
Remarks on result:
other: Average of 85% removal is observed based on effluent concentrations, for this plant. For the other plants, the substance could not be detected in effluent

Any other information on results incl. tables

The substance was detected in Swiss waste water treatment plants in a study conducted in 1996.  Concentrations in the influent were between <0.03 mg/l to 0.46 mg/l.  The highest concentration found was associated with a significant input from the textile industry.  An average of 85% removal is observed based on effluent concentrations, for this plant.  For the other plants, the substance could not be detected in effluent.

Applicant's summary and conclusion