Potassium sulphite

Density

Link to relevant study record(s)

Reference

Endpoint:

density, other

Remarks:

density

Type of information:

experimental study

Adequacy of study:

key study

Study period:

from 2008-06-03 to 2008-07-02

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 109 (Density of Liquids and Solids)

Version / remarks:

with petroleum as displacement liquid

Deviations:

no

GLP compliance:

yes

Type of method:

pycnometer method

Remarks:

with petroleum as displacement liquid

Type:

density

Density:

2.35 g/cm³

Temp.:

20 °C

The density of the displacement liquid was determined at 20 °C using an oscillating densitometer:

1^st determination: 0.7939 g/cm³

2^nd determination: 0.7939 g/cm³

Density determination of the test item:

		1^stdetermination	2^nddetermination
A	mass of pycnometer empty [corrected for air]	38.7574	37.4298
B	mass of pycnometer with test item [corrected for air]	42.6970	41.7175
C	mass of pycnometer with test item and displacement liquid	61.1598	59.8571
D	mass of displacement liquid calculated for the total pycnometer volume	19.7935	19.5847
E	mass of test item (B - A)	3.9396	4.2877
F	mass of displacement liquid (C - B)	18.4628	18.1396
G	mass of displacement liquid calculated for the volume taken by the test item (D-F)	1.3307	1.4451
H	density of the test item (E/G*density of displacement liquid)	2.3504 g/cm³	2.3555 g/cm³
I	density of the test item (mean)	2.353 g/cm³

Volume of 1^st pycnometer: 24.932 cm³; volume of 2^nd pycnometer: 24.669 cm³. Masses are listed in grams.

Conclusions:

The density of Potassium sulfite was determined to be 2.353 g/cm³ at 20 °C.

Executive summary:

For determination of the density of Potassium sulfite, the pycnometer method with petroleum as displacement liquid was carried out in accordance with the OECD-Guideline for the testing of chemicals (1995), 109 "Density of Liquids and Solids".

The density of Potassium sulfite was determined to be 2.353 g/cm³ at 20 °C.

Description of key information

The density of potassium sulfite is 2.353 g/cm³ at 20 °C, the relative density 2.353 (based on the density of water at 3.98 °C).

Key value for chemical safety assessment

Relative density at 20C:

2.353

Additional information

For determination of the density of Potassium sulfite, the pycnometer method with petroleum as displacement liquid was carried out in accordance with the OECD-Guideline for the testing of chemicals (1995), 109 "Density of Liquids and Solids": The density of Potassium sulfite was determined to be 2.353 g/cm³ at 20 °C.

The available value for Potassium sulfite is for the density. 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.