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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

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:
2017
Report date:
2017

Materials and methods

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

Test material

1
Chemical structure
Reference substance name:
disodium 2,4-dihydroxy-5-[(2-hydroxy-3-nitro-5-sulphonato-phenyl)azo]benzoate, reaction products with chromium triacetate
Molecular formula:
not applicable
IUPAC Name:
disodium 2,4-dihydroxy-5-[(2-hydroxy-3-nitro-5-sulphonato-phenyl)azo]benzoate, reaction products with chromium triacetate

Results and discussion

Water solubility
Key result
Water solubility:
114 g/L
Temp.:
20 °C
pH:
5.6
Remarks on result:
other: mean of 3 measurements

Any other information on results incl. tables

Table 1: results of preliminary test

mL of water for 1 g soluble

1

2

3

4

5

100

approx.. solubility in g/L

> 1000

1000 to 500

500 to 330

330 to 250

250 to 200

50 to 10

visual inspection

dry powder residue

water completely absorbed, solid

water completely absorbed, solid

not stirrable

stirrable solution

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

5.6

117

2

48

5.6

113

3

72

5.6

112

mean

 

 

114

Applicant's summary and conclusion

Conclusions:
the water solubility of the test item at 20°C is 114 g/L