Disodium 1,5-dihydroxypentane-1,5-disulphonate

Water solubility

Administrative data

Endpoint:

water solubility

Type of information:

experimental study

Adequacy of study:

key study

Study period:

From 31 OCTOBER 2018 to 06 DECEMBER 2018

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2018

Report date:

2018

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

OECD Guideline 105 (Water Solubility)

Version / remarks:

according to OECD 105 resp. EU A.6

Deviations:

no

GLP compliance:

no

Type of method:

flask method

Test material

Test material information

Constituent 1

Reference substance name:

Disodium 1,5-dihydroxypentane-1,5-disulphonate

Cas Number:

7420-89-5

Molecular formula:

C5H10Na2O8S2

IUPAC Name:

Disodium 1,5-dihydroxypentane-1,5-disulphonate

impurity 1

Reference substance name:

Sodium sulfate

Cas Number:

7757-82-6

IUPAC Name:

Sodium sulfate

impurity 2

Reference substance name:

Sodium hydrogen sulfite

Cas Number:

7631-90-5

IUPAC Name:

Sodium hydrogen sulfite

Results and discussion

Water solubility

Key result

Water solubility:

>= 277.7 - <= 294.1 g/L

Conc. based on:

test mat.

Loading of aqueous phase:

1 000 g/L

Incubation duration:

72 h

Temp.:

20 °C

pH:

>= 4.32 - <= 4.34

Applicant's summary and conclusion

Conclusions:

The concentration of Glutardialdehyde bis-Sodiumbisulfite in water had reached 285.9 ± 8.2 g/L at 20.0 °C = 285.9 ± 8.2 kg/m³ at 20.0 °C (SI units) (Mean value ± standard deviation of seven individual vessels)

Executive summary:

The solubility of the test substance Glutardialdehyde bis-Sodiumbisulfite in water was determined by measurement of the test substance concentration in the centrifuged test solutions using Ion Chromatography.

Thus, all flasks were initially taken into account for the calculation of the results. As flask 2 was found to be an outlier via Grubbs test, the final calculation was performed with flasks 1A-1C and 3-6. No Tyndall effect (i.e. a laser beam was not scattered when transmitted through the liquid) could be observed indicating that no colloidal dispersed particles or micelles are present. At the plateau, the concentration of Glutardialdehyde bis-Sodiumbisulfite in water had reached 285.9 ± 8.2 g/L at 20.0 °C = 285.9 ± 8.2 kg/m³ at 20.0 °C (SI units) (Mean value ± standard deviation of seven individual vessels)