Magnesium hydrogenorthophosphate

Appearance / physical state / colour

Link to relevant study record(s)

Reference

Endpoint:

appearance / physical state / colour

Type of information:

migrated information: read-across from supporting substance (structural analogue or surrogate)

Adequacy of study:

key study

Study period:

30/09/2009 -17/11/2009

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: see 'Remark'

Remarks:

This study is conducted according to an appropriate method and under the conditions of GLP and therefore the study is considered to be acceptable and to adequately satisfy the regulatory requirement as a key study for this endpoint. The rationale for reliability has not been amended despite the use as read across data. This approach is justified on the basis that although the test material is a hydrated form of the substance to be registered, the relevant study observations / measurements have been made with a view to determining the properties on the anhydrous magnesium hydrogenorthophosphate.

Principles of method if other than guideline:

Visual observation

GLP compliance:

yes (incl. QA statement)

Physical state at 20°C and 1013 hPa:

solid

Form:

powder

Colour:

white

Odour:

other: no data

Substance type:

inorganic

Conclusions:

The test material was reported to be a white powder at 20ºC and 1013hPa.

Description of key information

Appearance and physical state: solid white powder (visual analysis, GLP) 

Key value for chemical safety assessment

Physical state at 20°C and 1013 hPa:

solid

Additional information

The appearance and physical state of magnesium hydrogenorthophosphate were determined by visual inspection in the context of a melting/freezing point and water solubility study conducted under GLP conditions (Fox 2013). The test material was reported to be a solid white powder.