Registration Dossier
Registration Dossier
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EC number: 916-632-3 | CAS number: -
Water solubility
Administrative data
- Endpoint:
- water solubility
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study with acceptable restrictions
- Remarks:
- OECD 105
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 018
- Report date:
- 2018
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 105 (Water Solubility)
- Type of method:
- flask method
Test material
- Reference substance name:
- Disodium 4-amino-3-[[4-[(2-amino-4-hydroxyphenyl)azo]phenyl]azo]-5-hydroxy-6-(phenylazo)naphthalene-2,7-disulphonate
- EC Number:
- 270-629-5
- EC Name:
- Disodium 4-amino-3-[[4-[(2-amino-4-hydroxyphenyl)azo]phenyl]azo]-5-hydroxy-6-(phenylazo)naphthalene-2,7-disulphonate
- Cas Number:
- 68460-07-1
- Molecular formula:
- C28H22N8O8S2.2Na
- IUPAC Name:
- disodium 4-amino-3-({4-[(2-amino-4-hydroxyphenyl)diazenyl]phenyl}diazenyl)-5-hydroxy-6-(phenyldiazenyl)naphthalene-2,7-disulfonate
- Reference substance name:
- Disodium 4-amino-3-[[4-[(2,4-diaminophenyl)azo]phenyl]azo]-5-hydroxy-6-(phenylazo)naphthalene-2,7-disulphonate
- EC Number:
- 272-559-0
- EC Name:
- Disodium 4-amino-3-[[4-[(2,4-diaminophenyl)azo]phenyl]azo]-5-hydroxy-6-(phenylazo)naphthalene-2,7-disulphonate
- Cas Number:
- 68877-33-8
- Molecular formula:
- C28H23N9O7S2.2Na
- IUPAC Name:
- disodium 4-amino-3-({4-[(2,4-diaminophenyl)diazenyl]phenyl}diazenyl)-5-hydroxy-6-(phenyldiazenyl)naphthalene-2,7-disulfonate
Constituent 1
Constituent 2
Results and discussion
Water solubility
- Key result
- Water solubility:
- ca. 25 - <= 32 g/L
- Conc. based on:
- test mat.
- Temp.:
- 20 °C
- pH:
- ca. 6.2
Any other information on results incl. tables
Table 1: results of preliminary test
due to the intensive dark colour of the solutions visual evaluation was restricted. Therefore, a filter test was carried out to determine the approx. solubilty of the test substance:
the solutions cannot be filtered through a 0.2 µm RC syringe filter: not soluble
the solutions can be filtered through a 0.2 µm RC syringe filter: soluble
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 |
concentration theor. |
concentration found |
Recovery |
1 |
24.8 g/L |
22.3 g/L |
90 % |
2 |
31.9 g/L |
28.1 g/L |
88 % |
Applicant's summary and conclusion
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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