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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
13/6/2016-13/6/2016
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Experimental Result

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2016
Report date:
2016

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: OECD 122
Principles of method if other than guideline:
The pH of an aqueous solution or dispersion in water is determined with a pH measurement interface equipped with an appropriate electrode system.
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
Tetrasodium 1-acetamido-2-hydroxy-3-(4-((4-sulphonatophenylazo)-7-sulphonato-1-naphthylazo))naphthalene-4,6-disulphonate
EC Number:
219-746-5
EC Name:
Tetrasodium 1-acetamido-2-hydroxy-3-(4-((4-sulphonatophenylazo)-7-sulphonato-1-naphthylazo))naphthalene-4,6-disulphonate
Cas Number:
2519-30-4
Molecular formula:
C28H21N5O14S4.4Na
IUPAC Name:
tetrasodium 4-acetamido-5-hydroxy-6-({7-sulfonato-4-[(4-sulfonatophenyl)diazenyl]-1-naphthyl}diazenyl)naphthalene-1,7-disulfonate
Test material form:
solid: particulate/powder
Remarks:
migrated information: powder
Details on test material:
CAS No: 2519-30-4Name of the chemical: Tetrasodium 1-acetamido-2-hydroxy-3-(4-((4-sulphonatophenylazo)-7-sulphonato-1-naphthylazo))naphthalene-4,6-disulphonateNature of chemical: Organic

Results and discussion

pH value
pH value:
8.06
Temp.:
36 °C
Concentration:
1 vol%
Remarks on result:
other: basic

Any other information on results incl. tables

The pH of 1% w/vsolutionof the test item Tetrasodium 1-acetamido-2-hydroxy-3-(4-((4-sulphonatophenylazo)-7-sulphonato-1-naphthylazo))naphthalene-4,6-disulphonate (CAS No.2519-30-4) was 8.06 at  36 °C.

Applicant's summary and conclusion

Conclusions:
The pH determination of test item Diphenyl sulphide (CAS No. 139-66-2) was done following OECD guideline 122. pH of 1% w/v aqueous solution was measured with the help of pH meter and it was observed to be 8.27 at 32°C.
Executive summary:

The pH determination of test item Diphenyl sulphide (CAS No. 139-66-2) was done following OECD guideline 122. pH of 1% w/v aqueous solution was measured with the help of pH meter and it was observed to be 8.27 at 32°C.