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EC number: 244-073-9 | CAS number: 20837-86-9
- 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
Water solubility
Administrative data
- Endpoint:
- water solubility
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: guideline study according to GLP standard
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 011
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 105 (Water Solubility)
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- flask method
Test material
- Reference substance name:
- Lead cyanamidate
- EC Number:
- 244-073-9
- EC Name:
- Lead cyanamidate
- Cas Number:
- 20837-86-9
- Molecular formula:
- CN2.Pb
- IUPAC Name:
- λ²-lead(2+) (azanidylenemethylidene)azanide
Constituent 1
Results and discussion
- Details on results:
- The measured concentration in the flasks 2 - 7 onday 7 at the end of the test lay in the range of 0.06 -3.42 mg/L.
Due to the oxidation of the test item during the test in all flasks and high deviation from the measuerment in all flasks, a defined solubility of Cyanamide, lead(2+) salt (1:1) can not be stated.
IR spectroscopy
No N=C=N valence vibration was found in the chromatogram of hydrolysis product of Cyanamide, lead(2+) salt (1:1) at 1940 -1981 cm-1, but new valence vibration at 1413 cm-1 was observed, as a possible band for C=O (CO3)2-.
Element analysis
After the hydrolysis of the test item no nitrogen was found. Before the hydrolysis the content of nitrogen in the test item was 10.3 %.
The oxygen content after the hydrolsis was greater (16.7 %) than before hydrolysis (2.08 %).
Any other information on results incl. tables
Results
Due to the oxidation of the test item during the test in all flasks and high deviation from the measuerment in all flasks, a defined solubility of Cyanamide, lead(2+) salt (1:1) can not be stated.
After analysis of the hydrolysis product, it is presumed, that the hydrolysis product of the test item Cyanamide, lead(2+) salt (1:1) consists of lead carbonate ((PbCO3).
Applicant's summary and conclusion
- Conclusions:
- Interpretation of results (migrated information): decomposes
The presented data are reliable and adequate. - Executive summary:
The flasks method was used for the determination of the solubility of the test item in water as according to guidance for the implementation of REACH (R.7.1.7) column elution method should be used for organic substances only. In the main study, 51 - 107 mg/L Cyanamide, lead(2+) salt (1:1) in water were used in seven different vessels and the vessels were shaken at 20 + 0.5 °C. On day 1, 2, 3, 5, 6 and 7, vessels 1 was taken from the shaking apparatus and stored at 20 + 0.1 °C for equilibration. Samples were taken, filtrated and analysed using AAS for Pb as shaking of the test vessels was continued.
Due to the changes of colour in the flasks, the test was aborted on day 7. In flasks 2, 4 and 7 the colour of the test item had changed from yellow to white already on day 2. On day 6, the colour of the test item in flasks 1 and 3 was changed, too. At the end of the test (day 7), the test item in flasks 5 and 6 was still slightly yellowish, but lessthan on day 6.
On day 7 the the concentrationof Cyanamide, lead(2+) salt (1:1) lay in the range of 0.06 -3.42 mg/L.
Due to the oxidation of the test item during the flasks and high deviation within the single measurements in all flasks, no defined water solubility of Cyanamide, lead(2+) salt (1:1) can be stated.
After analysis of the hydrolysis product, it is presumed, that the hydrolysis product of the test item Cyanamide, lead(2+) salt (1:1) consits of lead carbonate (PbCO3).
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