Registration Dossier
Registration Dossier
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EC number: 266-007-8 | CAS number: 65996-74-9 The oxidized surface of steel produced during reheating, conditioning, hot rolling, and hot forming operations. This substance is usually removed by process waters used for descaling, roll and material cooling, and other purposes. It is subsequently recovered by gravity separation techniques. Composed primarily of high-purity iron oxides. May contain varying amounts of other oxides, elements, and trace compounds.
Adsorption / desorption
Administrative data
- Endpoint:
- adsorption / desorption
- Remarks:
- other: Kd
- Type of information:
- migrated information: read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- weight of evidence
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- other: see 'Remark'
- Remarks:
- The partition coefficient for Iron reported in this study is based on a literature survey. Mill scale is mainly and primarily composed of high-purity iron oxides (on average above 65%, i.e. FeO, Fe2O3, Fe3O4). Besides, other metal oxides and spinels, elements, and trace compounds such as oil residues <1% for all the uses except for batteries and Melting charge for which <3% can be found in the mill scale. More information on the justification of read across can be found in the attached document in the endpoint summaries of section 5 and 6.
Cross-reference
- Reason / purpose for cross-reference:
- reference to other study
Data source
Reference
- Reference Type:
- publication
- Title:
- Can the unit world model concept be applied to hazard assessment of both organic chemicals and metal ions?
- Author:
- Harvey C, Mackay, D, Webster E
- Year:
- 2 007
- Bibliographic source:
- Environmental Toxicology and Chemistry, Vol 26(10), pp 2129-2142
- Report date:
- 2007
Materials and methods
- Principles of method if other than guideline:
- Secondary source. Not sure if guideline is used
- GLP compliance:
- not specified
- Type of method:
- other: no data
- Media:
- soil
Test material
- Reference substance name:
- Iron
- EC Number:
- 231-096-4
- EC Name:
- Iron
- Cas Number:
- 7439-89-6
- IUPAC Name:
- iron(2+)
- Details on test material:
- Iron
Constituent 1
Study design
- Test temperature:
- No data
Batch equilibrium or other method
- Analytical monitoring:
- not specified
Results and discussion
Adsorption coefficient
- Type:
- Kd
- Remarks:
- log for soil
- Value:
- ca. 2.7
- Remarks on result:
- other: Mean log Kd is 2.736
Any other information on results incl. tables
Mean log Kd of 2.736 is derived from AECL report 1990 with log kd of 2.519; 3.079; 2.394; 2.954 for respectively sand; silt; clay and organic soils.
Applicant's summary and conclusion
- Conclusions:
- Mean log Kd for soil is 2.736.
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