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EC number: 421-880-6 | CAS number: 201792-73-6
- 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
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Adsorption / desorption
Administrative data
Link to relevant study record(s)
- Endpoint:
- adsorption / desorption: screening
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- October 10, 2011-October 17, 2011
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.19 (Estimation of the Adsorption Coefficient (KOC) on Soil and Sewage Sludge Using High Performance Liquid Chromatography (HPLC))
- GLP compliance:
- yes
- Type of method:
- HPLC estimation method
- Media:
- soil/sewage sludge
- Specific details on test material used for the study:
- Details on properties of test surrogate or analogue material (migrated information):
-the substance is in its salt form
log Kow= -1.73 - Test temperature:
- 25°C
- Details on study design: HPLC method:
- Column: Eclipse XDB-CN, 150 x 4.6 mm, 5µm
Mobile phase 1: A: 550 mL of MeOH was mixed with 450 mL of citrate buffer solution of pH 4.2
Mobile phase 2: B: 550 mL of MeOH was mixed with 450 mL of citrate buffer solution of pH 6.0
Detection: 210 nm - NaNO3
240 nm - reference compounds
600 nm - test substance
Flow: 1.0 mL / min
Injection volume: 10 uL
Column temp.: 25°C
Autosampler tem.: 25°C - Type:
- log Koc
- Remarks:
- soil, pH=5.6
- Value:
- ca. 2.42
- Temp.:
- 25 °C
- Type:
- log Koc
- Remarks:
- sludge, pH=5.6
- Value:
- ca. 2.39
- Temp.:
- 25 °C
- Type:
- log Koc
- Remarks:
- soil, pH=7.4
- Value:
- ca. -0.07
- Temp.:
- 25 °C
- Type:
- log Koc
- Remarks:
- sludge, pH=7.4
- Value:
- ca. -0.52
- Temp.:
- 25 °C
- Details on results (HPLC method):
- The study gives the following values for the estimation of adsorption coefficient (KOC) on soil and sewage sludge for Acid Black 210
Estimation of the adsorption coefficient (KOC) on soil and sewage sludge at given pH of mobile phase and set temperature:
log Koc, soil= 2.42 +/- 0.31 (pH = 5.6, 25°C)
log Koc, sludge= 2.39 +/- 0.65 (pH = 5.6, 25°C)
log Koc, soil = -0.07 +/- 0.58 (pH = 7.4, 25°C)
log Koc, sludge = -0.52 +/- 1.28 (pH = 7.4, 25°C)
In the case of mobile phase of pH 7.4, the test substance was less retained on the column than any of reference standard. The results were obtained by extrapolation of the given calibration curve. - Validity criteria fulfilled:
- no
- Conclusions:
- The study gives the following values for the estimation of adsorption coefficient (KOC) on soil and sewage sludge for Acid Black 210:
Estimation of the adsorption coefficient (KOC) on soil and sewage sludge at given pH of mobile phase and set temperature:
log = 2.42 +/- 0.31 (pH = 5.6, 25°C)
log = 2.39 +/- 0.65 (pH = 5.6, 25°C)
log = -0.07 +/- 0.58 (pH = 7.4, 25°C)
log = -0.52 +/- 1.28 (pH = 7.4, 25°C)
In the case of mobile phase of pH 7.4, the test substance was less retained on the column than any of reference standard. The results were obtained by extrapolation of the given calibration curve. - Executive summary:
The estimation of the adsorption coefficient Koc of Acid Black 210 on soil and sewage sludge was tested following Method C.19, Estimation of the adsorption coefficient (Koc) on soil and sewage sludge using high performance liquid chromatography (HPLC) at pH 5.6 and 7.4. The mobile phase were citric buffer solutions since the tested substance is ionisable. The temperature was set at 25°C.
Estimation of the adsorption coefficient (KOC) on soil and sewage sludge at given pH of mobile phase and set temperature:
log = 2.42 +/- 0.31 (pH = 5.6, 25°C)
log = 2.39 +/- 0.65 (pH = 5.6, 25°C)
log = -0.07 +/- 0.58 (pH = 7.4, 25°C)
log = -0.52 +/- 1.28 (pH = 7.4, 25°C)
In the case of mobile phase of pH 7.4, the test substance was less retained on the column than any of reference standard. The results were obtained by extrapolation of the given calibration curve.
Reference
Description of key information
log Koc, soil, pH 5.6, 25°C= 2.42
log Koc, sludge, pH 5.6, 25°C=2.39
log Koc, soil, pH 7.4, 25°C = -0.07
log Koc, sludge, pH 7.4, 25°C = -0.52
Key value for chemical safety assessment
- Koc at 20 °C:
- 1.1
Other adsorption coefficients
- Type:
- log Kp (solids-water in raw sewage sludge)
- Value in L/kg:
- 0.059
- at the temperature of:
- 25 °C
Other adsorption coefficients
- Type:
- log Kp (solids-water in settled sewage sludge)
- Value in L/kg:
- 0.059
- at the temperature of:
- 25 °C
Other adsorption coefficients
- Type:
- log Kp (solids-water in activated sewage sludge)
- Value in L/kg:
- 0.072
- at the temperature of:
- 25 °C
Other adsorption coefficients
- Type:
- log Kp (solids-water in effluent sewage sludge)
- Value in L/kg:
- 0.072
- at the temperature of:
- 25 °C
Additional information
A study (Karel Cizek, 2011) was performed to estimate the adsorption coefficient Koc of Acid Black 210 on soil and sludge by means of HPLC method, following EU C.19. Log Koc for both soil and sludge are less than 3 for pH 5.6 at 25°C and negative at pH 7.4, showing very low potential of adsorption of the tested substance. No significant influence of the potassium counterion can be estimated on this result
The value of 1.1 has been set as the minimum Koc value accepted by EUSES to perform the risk assessment.
Partitioning constants in the sewage plant have been set to QSAR "Non hydrophyilic" substances, in order to reproduce what it really happens in the sewage plant, where precipitation of the dye is provoqued by modulation of pH. In this way the dye is removed completely from the aqueous phase and the sludge sent to external special dedicated treatment ( eventually incineration)
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
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