Magnesium nitrate

Density

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

density, other

Remarks:

density

Type of information:

other: handbook

Adequacy of study:

weight of evidence

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

data from handbook or collection of data

Remarks:

Handbook data are considered from a trusted source. Data have been taken from many sources, including both compilations and the primary literature - where conflicts were found, the value deemed most reliable was chosen. The reference was peer-reviewed. In addition, the reference sources are indicated although not leading to sufficient information on the material & method used.

Guideline:

other: not mentioned

Principles of method if other than guideline:

Method followed unknown; data from handbook

GLP compliance:

not specified

Key result

Type:

density

Density:

ca. 2.3 g/cm³

Remarks on result:

other: Anhydrous form. Near room temperature.

Key result

Type:

density

Density:

1.45 g/cm³

Remarks on result:

other: Dihydrate. Near room temperature.

Key result

Type:

density

Density:

1.46 g/cm³

Remarks on result:

other: Hexahydrate. Near room temperature.

Conclusions:

The following densities at approx. room temperature were taken from the CRC Handbook of Chemistry and Physics (80th ed.):
Magnesium nitrate anhydrous: ~2.3 g/cm3
Magnesium nitrate dihydrate: 1.45 g/cm3
Magnesium nitrate hexahydrate: 1.46 g/cm3

Reference 2

Endpoint:

relative density

Type of information:

other: handbook

Adequacy of study:

weight of evidence

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

data from handbook or collection of data

Remarks:

Handbook data are considered from a trusted source. Data have been taken from many sources, including both compilations and the primary literature - where conflicts were found, the value deemed most reliable was chosen. The reference was peer-reviewed. In addition, the reference sources are indicated although not leading to sufficient information on the material & method used.

Guideline:

other: not mentioned

Principles of method if other than guideline:

Method followed unknown; data from handbook.

GLP compliance:

not specified

Key result

Type:

relative density

Density:

1.464 g/cm³

Remarks on result:

other: Hexahydrate

Conclusions:

The Merck Index (12th ed.) mentions a relative density of 1.46 for magnesium nitrate hexahydrate.

Reference 3

Endpoint:

relative density

Type of information:

other: handbook

Adequacy of study:

weight of evidence

Reliability:

4 (not assignable)

Rationale for reliability incl. deficiencies:

documentation insufficient for assessment

Guideline:

other: not mentioned

Principles of method if other than guideline:

Method followed unknown; data from handbook.

GLP compliance:

not specified

Key result

Type:

relative density

Density:

2.03 g/cm³

Temp.:

25 °C

Remarks on result:

other: Dihydrate

Key result

Type:

relative density

Density:

1.46 g/cm³

Remarks on result:

other: Hexahydrate

No temperature of measurement for the hexahydrate was given.

Conclusions:

The following densities were taken from Sax's Dangerous Properties of Industrial Materials (9th. ed.):
Density of magnesium dihydrate at 25°C: 2.03 g/cm3
Density of magnesium hexahydrate: 1.46 g/cm3

Description of key information

Combining three handbook results, the relative density of magnesium nitrate (anhydrous) is 2.3.

Key value for chemical safety assessment

Relative density at 20C:

2.3

Additional information

Three different handbooks gave the following results for the (relative) densities of the different form of magnesium nitrate:

-CRC Handbook of Chemistry and Physics (80th ed.): ~2.3 g/cm3 (anhydrous), 1.45 g/cm3 (dihydrate) and 1.46 g/cm3 (hexahydrate)

at approx. room temperature

-The Merck Index (12th ed.): 1.46 (hexahydrate)

-Sax's Dangerous Properties of Industrial Materials (9th. ed.): 2.03 g/cm at 25°C dihydrate and 1.46 g/cm3 for hexahydrate