Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
study well documented, meets generally accepted scientific principles, acceptable for assessment

Data source

Reference
Reference Type:
other company data
Title:
Unnamed
Year:
2011
Report date:
2011

Materials and methods

Test guideline
Guideline:
other: internal
Principles of method if other than guideline:
A 10% w/w solution is prepared with water and the test item. Solution is filtrated and pH is measured thanks to a pH meter.
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
[4-[p,p'-bis(dimethylamino)benzhydrylidene]cyclohexa-2,5-dien-1-ylidene]dimethylammonium m-[[p-anilinophenyl]azo]benzenesulphonate
EC Number:
265-449-9
EC Name:
[4-[p,p'-bis(dimethylamino)benzhydrylidene]cyclohexa-2,5-dien-1-ylidene]dimethylammonium m-[[p-anilinophenyl]azo]benzenesulphonate
Cas Number:
65113-55-5
Molecular formula:
C25H30N3.C18H14N3O3S
IUPAC Name:
[4-[p,p'-bis(dimethylamino)benzhydrylidene]cyclohexa-2,5-dien-1-ylidene]dimethylammonium m-[[p-anilinophenyl]azo]benzenesulphonate
Test material form:
solid: particulate/powder

Results and discussion

pH value
Key result
pH value:
7.3
Temp.:
20 °C
Concentration:
10 g/L

Any other information on results incl. tables

Aspect of the filtrate: colorated

Applicant's summary and conclusion

Conclusions:
A 10% w/w solution was prepared with water and the test item. The pH of such a solution was measured to be 7.3 at 20°C.