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Physical & Chemical properties

Additional physico-chemical information

Administrative data

Endpoint:
other: transformation dissolution test
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: OECD guidelines are followed.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2010
Report date:
2010

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: OECD Environment, Health and Safety Publications-Series on Testing and Assessment, 29)
Deviations:
yes
Remarks:
pH 8 medium only (buffer prepared according to ISO 6341)
GLP compliance:
not specified

Test material

Constituent 1
Reference substance name:
Mill scale (ferrous metal)
EC Number:
266-007-8
EC Name:
Mill scale (ferrous metal)
Cas Number:
65996-74-9
Molecular formula:
Not available (see remarks field below)
IUPAC Name:
Mill scale (ferrous metal)

Results and discussion

Results:
After 7 days test, at pH 8.09,measurments show that the mill scale does not undergo dangerous transformation.

Any other information on results incl. tables

Results of the transformation/dissolution test are provided in the following table:

Duration test

7 days

pH

8.09

Element

Content in (mg/L)

Al

0.005

Cr

<0.001

Cu

<0.001

Si

1.462

Ti

0.002

Fe

0.01

Mn

0.046

Ni

0.005

Zn

<0.01

Applicant's summary and conclusion

Conclusions:
The results on the short term (7 days) transformation/dissolution test demonstrate that in the range of the measured pH-values the metals are only partly dissolved in the buffered aqueous medium (exception for Si)