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Environmental fate & pathways

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Endpoint:
other distribution 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

GLP compliance:
not specified
Type of study:
other: Adsorption in WWTP
Media:
water - sewage sludge

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

Results and discussion

Any other information on results incl. tables

85% removal in a municipal waste water treatment plant.

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