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EC number: 273-744-9 | CAS number: 69012-45-9 By-product produced in the rolling of copper wire either in a conventional rod mill or a continuous cast rod mill. Consists of metallic copper, cuprous oxide and cupric oxide.
- 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:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: No GLP study but other quality assurance
Cross-reference
- Reason / purpose for cross-reference:
- reference to other study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 010
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 105 (Water Solubility)
- GLP compliance:
- no
- Remarks:
- other quality assurance
- Type of method:
- flask method
Test material
- Reference substance name:
- Scale (coating), copper
- EC Number:
- 273-744-9
- EC Name:
- Scale (coating), copper
- Cas Number:
- 69012-45-9
- IUPAC Name:
- scale (coating), copper
- Details on test material:
- B10, Scale, slag-type material from Cu melting furnace, primary smelter (representative, homogenized), sample code: slag from melting furnace, lab code: 09TT03840
B10, Scale, slag-type material from Cu rolling mill (representative, homogenized), sample code: scale coating from rolling mill, lab code: 09TT03897
B10, scale, dross-type (site 2, fines, homogenized), lab code: 10TT01448
B10, scale, dross-type (site 2, particles, homogenized), lab code: 10TT01449
B10, scale, dross-type (site 3) , lab code: 10TT01635
B10, scale, dross-type (site 3), lab code: 10TT01565
Constituent 1
Results and discussion
Any other information on results incl. tables
Water solubility tests were done for samples 09TT03840 and 09TT03897. In the preliminary test,0.1277 g sample 09TT03840 was found to be soluble in 1 mL volume of water (48 h time).The preliminary test did not indicate any solubility for the sample 09TT03897.Approximately 6 g sample 09TT03840 and 21 ml water, and 5 g sample 09TT03897 and 100 ml water were taken to the test. Specific weighed amounts are given in Appendices A-B.
The shaking timewas for 14-16 days.After that each sample was equilibrated for 24 h time.Table5 presents measured pH range and average metal concentrations for the samples.Substances with solubility <10 mg/l are considered low-soluble and those with solubility <1 mg/l are considered poorly soluble /38,43/.
11 and 21 mg/l Na was dissolved from the samples 09TT03840 and 09TT03897, respectively. 17 mg/l Si was dissolved from the sample 09TT03840. Otherwise the samples were low-soluble. The standard method involves three tests, which is not enough for a statistical analysis.
Water solubility test
Sample code 09TT03840 (fraction0.85-5.0mm)
Lab. work code 10004702/69
Preliminary test:
0.1277 g sample was found to be soluble in 1 mL volume of water (48 h time).
Flask test:
Shaking time Sample mass Volume of water
14 days 6.3074 g 21 mL
15 days 6.3249 g 21 mL
16 days 6.3138 g 21 mL
Shaking at 30°C, 24 h equilibration at 20±0.5°C.
Water solubility test
Sample code 09TT03897
Lab. work code 10004702/63
Preliminary test:
0.1 g sample was not found to be soluble in the following volumes of water: 0.1 mL, 0.5 mL, 1 mL, 2 mL, 10 mL, 100 mL, 200 mL
Flask test:
Shaking time Sample mass Volume of water
14 days 5.084 g 100 mL
15 days 5.013 g 100 mL
16 days 5.028 g 100 mL
Shaking at 30°C, 24 h equilibration at 20±0.5°C.
Table5:Average water solubility calculated from the 14-16 days shaking tests.
|
Sample code |
09TT03840 |
09TT03897 |
|
|
Average or range |
Average or range |
pH |
|
9.22-9.37 |
6.88-7.20 |
ICP Ag |
mg/l |
- |
<1 |
ICP Al |
mg/l |
<0.2 |
<0.2 |
ICP As |
mg/l |
<0.2 |
<0.2 |
ICP Ba |
mg/l |
4 |
<0.2 |
ICP Ca |
mg/l |
10 |
5.6 |
ICP Cd |
mg/l |
- |
<0.1 |
ICP Co |
mg/l |
<0.1 |
<0.2 |
ICP Cr |
mg/l |
<0.1 |
<0.2 |
ICP Cu |
mg/l |
<8 |
0.8 |
ICP Fe |
mg/l |
<0.1 |
<0.2 |
ICP K |
mg/l |
<5 |
<5 |
ICP Mg |
mg/l |
0.4 |
0.6 |
ICP Mn |
mg/l |
<0.1 |
<0.2 |
ICP Na |
mg/l |
11 |
20.8 |
ICP Ni |
mg/l |
<0.2 |
<0.2 |
ICP P |
mg/l |
<0.5 |
- |
ICP Pb |
mg/l |
<0.2 |
<0.2 |
ICP S |
mg/l |
0.8 |
0.7 |
ICP Sb |
mg/l |
- |
<0.2 |
ICP Se |
mg/l |
- |
<0.2 |
ICP Si |
mg/l |
17 |
2.6 |
ICP Sn |
mg/l |
<0.2 |
<0.2 |
ICP Te |
mg/l |
- |
<0.2 |
ICP Ti |
mg/l |
<0.2 |
- |
ICP Zn |
mg/l |
<0.2 |
<0.2 |
Applicant's summary and conclusion
- Conclusions:
- Interpretation of results (migrated information): other: insoluble to poorly soluble in preliminary test
Preliminary test did not indicate poor to low solubility of the substance. Flask method test was performed on representative sample of the UVCB, a complex metal containing substance. Validity of the reported results confirmed by Harlan Lab (V. Gretton, 2010) - Executive summary:
Classic definition of solubility do not apply to the UVCB, who is a complex metal containing substance. The usually accepted meaning in that case is (according to ECHA Guidance on information requirements and chemical safety assessment Chapter R.7a) " the composition of the aqueous solution formed at equilibrium under a defined set of conditions". Temperature and the amount of substance added per unit volume of water (i.e. the loading) are the main factors to consider. It was not always possible to establish equilibrium of all components; therefore, time and type of agitation of the vessels have been described. Aqueous solubilities were reported in mg/l.
For this UVCB, preliminary result demonstrated that substance is poorly soluble in water. The preliminary result showing solubility of the sample from melting furnace was not confirmed in the additional tests. Major results from the additional flask test were: with a loading of 5 or 6g/100ml, and shaking over 14 -16 days, main constituents showed poor solubilities, with the exception of Na, K, Ca and Si (low), and Cu (poor to low). The pH ranged from 9.22 to 9.37, and 6.88 to 7.20.
Under these conditions, the report aknwoledges that stated solubilities may be higher than reality for some samples (e.g. due to abrasion, difficult to remove tiny undissolved particules, etc)
The reported results from OECD 105 are therefore indicative for the behavior of the UVCB in water. For the purpose of assessing environmental fate and behavior of this difficult to test complex metal containing substance, Transformation/dissolution test would however be more appropriate.
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