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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
pH
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data

Data source

Reference
Reference Type:
review article or handbook
Title:
water solubility
Author:
Institut für Arbeitsschutz der Deutschen Gesetzlichen Unfallversicherung (IFA)
Year:
2017
Bibliographic source:
GESTIS

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: As mention below
Principles of method if other than guideline:
To determine the pH of the 2-[(4-aminophenyl) amino]-5-nitrobenzenesulfonic acid
GLP compliance:
not specified

Test material

Constituent 1
Chemical structure
Reference substance name:
2-(4-aminoanilino)-5-nitrobenzenesulphonic acid
EC Number:
202-057-9
EC Name:
2-(4-aminoanilino)-5-nitrobenzenesulphonic acid
Cas Number:
91-29-2
Molecular formula:
C12H11N3O5S
IUPAC Name:
2-(3-(4-amino-9,10-dihydro-3-sulpho-9,10-dioxoanthracen-4-yl)aminobenzenesulphonyl)vinyl) disodium sulphate
Specific details on test material used for the study:
Name of test material : 2-[(4-aminophenyl) amino]-5-nitrobenzenesulfonic acid
Molecular formula : C12H11N3O5S
Molecular weight : 309.301 g/mol
Physical Appearence : Solid
Smiles notation : O=S(=O)(O)c1c(Nc2ccc(N)cc2)ccc([N+]([O])=O)c1
InChl : GSITZZUEHIPPMH-UHFFFAOYSA-N

Results and discussion

pH value
pH value:
> 4 - < 5
Temp.:
20 °C
Concentration:
7.8 g/L

Applicant's summary and conclusion

Conclusions:
pH of the 2-[(4-aminophenyl) amino]-5-nitrobenzenesulfonic acid from above source is determined to be in the range of 4 to 5 at 20 Deg C & concentration about 7.8 g/L.
Executive summary:

pH of the 2-[(4-aminophenyl) amino]-5-nitrobenzenesulfonic acid from above source is determined to be in the range of 4 to 5 at 20 Deg C & concentration about 7.8 g/L.