Disodium disulphite

Density

Link to relevant study record(s)

Reference

Endpoint:

density

Remarks:

density

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

guideline study without detailed documentation

Qualifier:

according to guideline

Guideline:

other: DIN EN ISO 1183-1 procedure B

Deviations:

no

GLP compliance:

no

Type of method:

pycnometer method

Remarks:

with Petroleum as replacement liquid

Type:

density

Density:

2.36 g/cm³

Temp.:

20 °C

Conclusions:

The density of the test item, Natriumdisulfit, was determined to be 2.358 g/cm³ at 20 °C.

Executive summary:

The determination of the density was carried out by means of a pycnometer with petroleum as displacement fluid in accordance with DIN EN ISO 1183 -1B. The density of the test item, Natriumdisulfit, was determined to be 2.358 g/cm³ at 20 °C.

Description of key information

Density of disodium disulfite = 2.36 g/cm³ at 20 °C

Key value for chemical safety assessment

Relative density at 20C:

2.358

Additional information

For evaluation of this endpoint one analytical report from BASF was used as key information. The determination of the density was carried out by means of a pycnometer with petroleum as displacement fluid. Results available from this report describe a density for Disodium disulfite of 2.358 g/cm³ measured at 20 °C.

The key value should be entered as the relative (specific) density of the substance. Since no reference for this calculation is explicitly stated, it can be assumed that water at 4 °C (or, more precisely, 3.98 °C, which is the temperature at which water reaches its maximum density) is the reference. The density of water is (approximately) 1 g/cm³, which makes relative density calculations particularly convenient: the density of the object only needs to be divided by 1, which results in a relative density of approximately 2.358 measured at 20 °C.