Dipotassium peroxodisulphate

Density

Link to relevant study record(s)

Reference

Endpoint:

relative density

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2009-11-16

Reliability:

1 (reliable without restriction)

Reason / purpose for cross-reference:

reference to same study

Reason / purpose for cross-reference:

reference to other study

Qualifier:

according to guideline

Guideline:

EU Method A.3 (Relative Density)

Version / remarks:

92/69/EEC

Deviations:

no

Principles of method if other than guideline:

NA

GLP compliance:

not specified

Type of method:

pycnometer method

Type:

relative density

Density:

1.39 g/cm³

Temp.:

20 °C

relative density (D 4/20, average) = 1.39 +/- 0.28 (95 % confidence interval)

Sample	Density (g/cm3)
1	1.38
2	1.40
3	1.39
Mean	1.39

Conclusions:

The relative density (D4/20) of dipotassium persulfate was determined to 1.39 +/- 0.28 g/cm3 at 20 °C (95 % confidence interval).

Executive summary:

Following EU method A.3, the relative density ( D4/20) of dipotassium persulfate was determined to 1.39 +/- 0.28 g/cm3 at 20 °C (95 % confidence interval). Three separate tests were carried out:

Sample	Density (g/cm3)
1	1.38
2	1.40
3	1.39
Mean	1.39

Description of key information

Following EU method A.3, the relative density (D4/20) of dipotassium persulfate was determined to 1.39 ± 0.28 g/cm³ at 20 °C (95 % confidence interval).

Key value for chemical safety assessment

Relative density at 20C:

1.39

Additional information

The relative density (D4/20) for the substances of the Persulfate Category was determined according to EU method A.3 applying the pycnometer method. The determined values for diammonium-, -potassium- and -sodium persulfate were 1.26 g/cm³, 1.39 g/cm³ and 1.68 g/cm³ at 20 °C.