Dipotassium disulphite

Density

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

density, other

Remarks:

density and relative density

Type of information:

other: Handbook data

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

data from handbook or collection of data

Remarks:

From a trusted source acc. to "ECHA, Guidance on information requirements and chemical safety assessment – Chapter R.7a: Endpoint specific guidance"

Qualifier:

no guideline followed

Principles of method if other than guideline:

Not applicable - Handbook data

GLP compliance:

not specified

Type of method:

other: no data

Type:

density

Density:

2.3 g/cm³

Temp.:

20 °C

Remarks on result:

other: relative density: 2.3

According to the reference, the density values can be assumed to refer to temperatures near room temperature. For this reason 20 °C was filled in as temperature.

The relative density was calculated from the value of the handbook. The value was divided by the relative density of water at 4 °C (1.000).

Conclusions:

According to the reference, the relative density of dipotassium disulphite is 2.3 at approx. 20 °C.

Reference 2

Endpoint:

density, other

Remarks:

density and relative density

Type of information:

experimental study

Adequacy of study:

supporting study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

secondary literature

Remarks:

authoritative secondary source

Qualifier:

no guideline followed

Principles of method if other than guideline:

Not applicable - authoritative secondary source

GLP compliance:

not specified

Type of method:

other: no data

Type:

density

Density:

2.3

Remarks on result:

other: relative density: 2.3

Value from general accepted authoritative secondary source. No data available for temperature. But the substance is a solid and so the temperature will have negligible influence upon density.

Conclusions:

According to the reference, dipotassium disulfite as a relative density of 2.3.

Reference 3

Endpoint:

density, other

Remarks:

density

Type of information:

experimental study

Adequacy of study:

supporting study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

secondary literature

Remarks:

Peer reviewed data

Qualifier:

no guideline followed

Principles of method if other than guideline:

handbook data - Peer reviewed data

GLP compliance:

not specified

Type of method:

other: no data

Type:

density

Density:

2.34 g/cm³

Value from general accepted authoritative secondary source. No data available for temperature. But the substance is a solid and so the temperature will have negligible influence upon density.

Conclusions:

According to the reference, dipotassium disulfite as a density of 2.34 g/cm³.

Description of key information

Relative density of dipotassium disulfite: 2.3

Key value for chemical safety assessment

Relative density at 20C:

2.3

Additional information

For the evaluation of this endpoint data from the CRC handbook were used as key information. According to ECHA, guidance on information requirements and chemical safety assessment – chapter R.7a, specific handbook data for physic-chemical properties are considered to be a reliable data source. Useful reference books and data compilations containing peer reviewed physico-chemical data include the CRC Handbook of Chemistry and Physics.

Two further secondary sources (Hawley's Condensed Chemical Dictionary and IARC Monographs on the Evaluation of Carcinogenic Risks to Humans) were used to support the key information. All references indicate that dipotassium disulfite has a (relative) density of 2.3.