Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Appearance / physical state / colour

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
appearance / physical state / colour
Type of information:
other: handbook data
Adequacy of study:
key study
Study period:
not specified
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Remarks:
Data from peer reviewed handbook
Qualifier:
no guideline followed
Principles of method if other than guideline:
not applicable - handbook data
GLP compliance:
not specified
Physical state at 20°C and 1013 hPa:
solid
Key result
Form:
solid: granular
Colour:
Grey
Odour:
odourless
Substance type:
inorganic

Colour can vary depending on the prevalence of the iron oxides and further reaction with oxygen: grey-blue, when prevalence of Fe2O3; light grey, when prevalence of Fe3O4; mill scale may even turn to red colour.

Conclusions:
Mill scale is a grey, odorless, inorganic, solid substance in granular shape.

Description of key information

Mill scale is a grey, odourless, inorganic, solid substance in granular shape.

Key value for chemical safety assessment

Physical state at 20°C and 1013 hPa:
solid
Form:
solid: granular
Colour:
grey

Additional information