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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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
Study period:
23.07.2012 - 07.08.2012
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with national standard methods
Justification for type of information:
Experimental test result performed using standard test guidelines

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2012
Report date:
2012

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: by pH meter
Principles of method if other than guideline:
Measured as negative log of Hydrogen Ion concentration using pH meter & appropriate Buffers of pH 4 & 9
GLP compliance:
no

Test material

Constituent 1
Reference substance name:
2, 5-diaminobenzenesulphonic acid
IUPAC Name:
2, 5-diaminobenzenesulphonic acid
Constituent 2
Chemical structure
Reference substance name:
2,5-diaminobenzenesulphonic acid
EC Number:
201-832-9
EC Name:
2,5-diaminobenzenesulphonic acid
Cas Number:
88-45-9
Molecular formula:
C6H8N2O3S
IUPAC Name:
2,5-diaminobenzene-1-sulfonic acid
Details on test material:
- Name of test material (as cited in study report): 2, 5-diaminobenzenesulphonic acid
- Substance type: Organic
- Physical state: solid

Results and discussion

pH value
Key result
pH value:
1.77
Temp.:
25 °C
Concentration:
1 vol%
Remarks on result:
other: Acidic

Applicant's summary and conclusion

Conclusions:
1% by volume solution of test chemical was determine to exhibit a pH of 1.77 at 25 Deg C. Thus 1% by volume solution of test chemical is acidic in nature.
Executive summary:

1% by volume solution of test chemical was determine to exhibit a pH of 1.77 at 25 Deg C. Thus 1% by volume solution of test chemical is acidic in nature.