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EC number: 240-383-3 | CAS number: 16291-96-6 An amorphous form of carbon produced by partially burning or oxidizing wood or other organic matter.
- 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
- Study period:
- 2010-6-28 to 2010-10-29
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: The study was conducted in accordance with EC directive 440/2008, method A.6 "water solubility", dated 31. May 2008
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 010
- Report date:
- 2010
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.6 (Water Solubility)
- Deviations:
- yes
- Remarks:
- Deionised water with TOC <1 ppm and conductivity below 0.1 µS/cm was used.
- Principles of method if other than guideline:
- The column elution method is based on the elution of a test substance with water from a micro-column which is filled with the test material. The water solubility is given by the mass concentration of the eluate when this has reached a plateau as a function of time. For the determination of charcoal, a HPLC column was filled with 700 mg of the test item and eluted with a continuous flow of 25 mL/h. The first column volumes were discarded and then seven fractions were collected and determined by the analysis of total carbon (TC) using a carbon analyser.
In a second experiment, the flow rate was reduced to 13 mL/h and 2 mL fractions were collected and analysed accordingly. - GLP compliance:
- no
- Type of method:
- column elution method
Test material
- Reference substance name:
- Charcoal
- EC Number:
- 240-383-3
- EC Name:
- Charcoal
- Cas Number:
- 16291-96-6
- IUPAC Name:
- Carbón vegetal
- Details on test material:
- Name: Charcoal (Probe 1: C-Fix = 73.3%)
Batch no.: 19062009 1PP
Appearance: Charcoal typic
Composition: Charcoal, carbon content in the test item 85.6% (elementary analysis)
CAS-no.: 16291-96-6
EINECS-no.: 240-383-3
Purity: C-Fix: 73.3%
Expiry date: Dec. 2030
Storage: Room temperature 20±5 °C, keep away from humidity
Preparation:
20 g of the test item charcoal was finely ground and the fraction 100-500 µm was used fort the test.
Constituent 1
Results and discussion
Water solubility
- Water solubility:
- < 1 mg/L
- Temp.:
- 21.3 °C
- Details on results:
- All measurements lay below the limit of quantification (LOQ) of total carbon (TC) (1.87 mg/L).
Deviation from study plan:
A temperature of 21.3±0.2 °C instead of 20.0±0.5 °C was considered as uncritical due to the low solubility measured.
Any other information on results incl. tables
Determination of test item concentration in water
The analytical results are presented in the following tables:
Measurements at flow rate 24.68 mL/h
Sample # |
TC [mg/L] |
TC*of the test item [%] |
Concentration of the test item [mg/L] |
pH |
1 |
2.88 |
85.6 |
3.36 |
6 |
2 |
1.77 (< LOQ) |
85.6 |
< LOQ |
6 |
3 |
1.41 (< LOQ) |
85.6 |
< LOQ |
6 |
4 |
0.91 (< LOQ) |
85.6 |
< LOQ |
6 |
5 |
0.82 (< LOQ) |
85.6 |
< LOQ |
6 |
6 |
1.11 (< LOQ) |
85.6 |
< LOQ |
6 |
7 |
0.63 (< LOQ) |
85.6 |
< LOQ |
6 |
Measurements at flow rate 12.64 mL/h
Sample # |
TC [mg/L] |
TC*of the test item [%] |
Concentration of the test item [mg/L] |
pH |
8 |
0.74 (< LOQ) |
85.6 |
< LOQ |
6 |
9 |
0.87(< LOQ) |
85.6 |
< LOQ |
6 |
10 |
0.96 (< LOQ) |
85.6 |
< LOQ |
6 |
11 |
0.96 (< LOQ) |
85.6 |
< LOQ |
6 |
12 |
1.06 (< LOQ) |
85.6 |
< LOQ |
6 |
13 |
1.13 (< LOQ) |
85.6 |
< LOQ |
6 |
14 |
0.88 (< LOQ) |
85.6 |
< LOQ |
6 |
* The TC (total carbon) of the test item was measured by elementary analysis (not within this study; value was provided by the monitor.)
The value of sample 1 was considered as outlier. The experiment was finished after 14 consecutive fractions.
Solubility results:
13 of the 14 measured values lay below the limit of quantification (LOQ) of total carbon (TC)(1.87 mg/L). The single value lying above the LOQ was considered as outlier.
The concentration of the test item was therefore calculated from the LOQ of TC and the carbon content of the test item as < 2.18 mg/L.
The values of the TC content lay above the limit of detection of 0.5 mg/L. The mean of these values lay below 1 mg/L,calculated with value 4 -14. Value 1 -3 are not chosen for mean calculation because they lay out of the equilibrium according to the guideline (>30% difference). Therefore the water solubility of charcoal (Probe 1: C-Fix = 73.3%) is <1 mg/L.
Applicant's summary and conclusion
- Conclusions:
- Interpretation of results (migrated information): slightly soluble (0.1-100 mg/L)
The water solubility of charcoal was <1.0 mg/L at 21.3±0.2°C.
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