Registration Dossier
Registration Dossier
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EC number: 215-204-7 | CAS number: 1313-27-5
Adsorption / desorption
Administrative data
Link to relevant study record(s)
Description of key information
The average of all relevant values for the particulate suspended matter compartment has been put forward as the typical Kd for suspended particulate material. The largest amount of high quality was identified in the FOREGS-database; the typical Kd-sediment of 1,778 L/kg that was derived from this dataset is considered as a reliable value for this compartment.
The derived value of 2,793 L/kg (log Kd of 3.45) for suspended particulate matter is about a factor of 1.6 higher than the Kd that was found for the sediment compartment. This finding is in line with the observations for other metals where the Kd for suspended particulate matter was also somewhat higher compared to the Kd for sediment.
For the terrestrial compartment, it was decided to put forward the typical value of 871 L/kg (Log Kd: 2.94) as reported by Crommentuyn et al (1997). This value has been used by the Dutch authorities (RIVM) for setting environmental quality criteria.
Key value for chemical safety assessment
Other adsorption coefficients
- Type:
- log Kp (solids-water in suspended matter)
- Value in L/kg:
- 3.446
Other adsorption coefficients
- Type:
- log Kp (solids-water in sediment)
- Value in L/kg:
- 3.25
Other adsorption coefficients
- Type:
- log Kp (solids-water in soil)
- Value in L/kg:
- 2.94
Other adsorption coefficients
- Type:
- log Kp (solids-water in raw sewage sludge)
- Value in L/kg:
- 3.446
Other adsorption coefficients
- Type:
- log Kp (solids-water in effluent sewage sludge)
- Value in L/kg:
- 3.446
Other adsorption coefficients
- Type:
- log Kp (solids-water in activated sewage sludge)
- Value in L/kg:
- 3.446
Other adsorption coefficients
- Type:
- log Kp (solids-water in settled sewage sludge)
- Value in L/kg:
- 3.446
Additional information
Additional information on the derivation of Kd-values for the various compartments (suspended matter, sediment, soil) can be found in the Background Document "Environmental fate properties of molybdenum", which is attached in the technical dossier in IUCLID Section 13.
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