Registration Dossier

Administrative data

Endpoint:
pH
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2014

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
other: OECD 122
Principles of method if other than guideline:
A pH meter is essentially a voltmeter with high input impedance which measures the voltage of an electrode sensitive to the hydrogen ion concentration, relative to another electrode which exhibits a constant voltage.
GLP compliance:
not specified

Test material

Reference
Name:
Unnamed
Type:
Constituent
Type:
Constituent
Test material form:
other: off white granules
Details on test material:
- Name of test material: disodium4,4'-bis[(4-anilino-6-morpholino-1,3,5-triazin-2-yl)amino]stilbene-2,2'-disulphonate
- Molecular formula: C40-H40-N12-O8-S2.2Na
- Molecular weight: 925
- Substance type: Organic
- Physical state: Solid

Results and discussion

pH value
pH value:
11.3
Temp.:
28 °C
Concentration:
1 vol%

Applicant's summary and conclusion

Conclusions:
pH of 1% w/v aqueous solution of the test substance disodium 4, 4'-bis [(4-anilino-6-morpholino-1, 3, 5-triazin-2-yl) amino]stilbene-2,2'-disulphonate (CAS No. 16090-02-1) is 11.3 at 28 °C.
Executive summary:

The pH determination of test substance disodium 4, 4'-bis [(4-anilino-6-morpholino-1,3,5-triazin-2-yl)amino]stilbene-2,2'-disulphonate (CAS No. 16090-02-1) was done as per the test guideline OECD 122. The pH of the test solution was determined with the help ofpH meter. The pH was found to be 11.3 at 28 °C.