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EC number: 287-370-9 | CAS number: 85480-89-3
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data

Phototransformation in water
Administrative data
- Endpoint:
- phototransformation in water
- Type of information:
- migrated information: read-across based on grouping of substances (category approach)
- Adequacy of study:
- weight of evidence
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Test procedure in accordance with national (draft) standard methods with acceptable restrictions.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
Materials and methods
- Study type:
- direct photolysis
- Principles of method if other than guideline:
- Method: other (measured)
- GLP compliance:
- no
Test material
- Reference substance name:
- [ethane-1,2-diylbis[nitrilobis(methylene)]]tetrakisphosphonic acid
- EC Number:
- 215-851-5
- EC Name:
- [ethane-1,2-diylbis[nitrilobis(methylene)]]tetrakisphosphonic acid
- Cas Number:
- 1429-50-1
- Molecular formula:
- C6H20N2O12P4
- IUPAC Name:
- {ethane-1,2-diylbis[nitrilobis(methylene)]}tetrakis(phosphonic acid)
Constituent 1
Study design
- Light source:
- sunlight
Sensitiser (for indirect photolysis)
- Type of sensitiser:
- water with additives
Results and discussion
- Transformation products:
- yes
- Details on results:
- 12% transformation (phosphonate to orthophosphate) was measured after 17 days at pH 7 (9% at pH 4 and 4% at pH10). Levels of degradation in the presence of ferric (Fe III) nitrate were higher, with 82% transformation after 17 days at pH 7 (64% at pH 4 and 19% at pH10). The effect of other metals (chromic, zinc and cupric ions) was insignificant.
Any other information on results incl. tables
Table 1 presents the results seen for Dequest 2041 under the various conditions of this study.
Table 1: Degradation results for Dequest 2041
Test condition |
pH |
% transformation to orthophosphate |
||
Day 3 |
Day 9 |
Day 17 |
||
Light conditions |
4 |
0 |
1 |
4 |
7 |
1 |
6 |
11 |
|
10 |
1 |
3 |
4 |
|
Dark conditions |
4 |
|
|
1 |
7 |
|
|
0 |
|
10 |
|
|
0 |
|
With Ferric nitrate (light) |
4 |
8 |
11 |
64 |
7 |
7 |
45 |
56 |
|
10 |
8 |
18 |
25 |
|
With Ferric nitrate (dark) |
4 |
|
|
0 |
7 |
|
|
0 |
|
10 |
|
|
0 |
|
With Chromic nitrate (light) |
4 |
|
|
4 |
7 |
|
|
3 |
|
10 |
|
|
6 |
|
With Chromic nitrate (dark) |
4 |
|
|
1 |
7 |
|
|
0 |
|
10 |
|
|
1 |
|
With Zinc nitrate (light) |
4 |
|
|
2 |
7 |
|
|
5 |
|
10 |
|
|
4 |
|
With Zinc nitrate (dark) |
4 |
|
|
0 |
7 |
|
|
0 |
|
10 |
|
|
1 |
|
With Cupric nitrate (light) |
4 |
|
|
1 |
7 |
|
|
1 |
|
10 |
|
|
4 |
|
With Cupric nitrate (dark) |
4 |
|
|
0 |
7 |
|
|
0 |
|
10 |
|
|
1 |
Applicant's summary and conclusion
- Validity criteria fulfilled:
- not applicable
- Conclusions:
- Direct photolysis of EDTMP is not significant in the absence of sensitisers. Sensitised photolysis was observed in the presence of ferric nitrate.
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