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Diss Factsheets

Administrative data

Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
OECD 105

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2016
Report date:
2016

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 105 (Water Solubility)
Type of method:
flask method

Test material

Constituent 1
Chemical structure
Reference substance name:
Disodium 4,8-diamino-1,5-dihydroxy-9,10-dioxoanthracene-2,6-disulphonate
EC Number:
220-678-3
EC Name:
Disodium 4,8-diamino-1,5-dihydroxy-9,10-dioxoanthracene-2,6-disulphonate
Cas Number:
2861-02-1
Molecular formula:
C14H10N2O10S2.2Na
IUPAC Name:
disodium 4,8-diamino-1,5-dihydroxy-9,10-dioxo-9,10-dihydroanthracene-2,6-disulfonate

Results and discussion

Water solubility
Key result
Water solubility:
7.2 g/L
Temp.:
20 °C
pH:
ca. 10.7
Remarks on result:
other: mean of 3 measurements

Any other information on results incl. tables

Table 1: results of preliminary test

water for 0.1 g test item [mL]

0.1

0.5

1

2

10

100

150

approximate solubility [g/L]

> 1000

200 -1000

100 - 200

50 - 100

10 - 50

1 – 10

< 1

visual evaluation

not soluble

not soluble

not soluble

not soluble

soluble

soluble

soluble

Table 2: results of flask method

Flask no

Equilibration time at 20 °C [h]

pH of aqueous solution

Test substance content [g/L]

1

24

10.8

7.0

2

48

10.8

7.4

3

72

10.4

7.2

mean

 

 

7.2

Applicant's summary and conclusion

Conclusions:
the water solubility of the test item at 20°C is 7.2 g/L