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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
study report
Title:
Unnamed
Year:
2019
Report date:
2019

Materials and methods

Test guideline
Qualifier:
equivalent or similar to guideline
Guideline:
OECD Guideline 122 (Determination of pH, Acidity and Alkalinity)
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
(4-carboxybutyl)triphenylphosphonium bromide
EC Number:
241-782-5
EC Name:
(4-carboxybutyl)triphenylphosphonium bromide
Cas Number:
17814-85-6
Molecular formula:
C23H24BrO2P
IUPAC Name:
(4-carboxybutyl)triphenylphosphonium bromide
Test material form:
solid

Results and discussion

pH valueopen allclose all
Key result
pH value:
3.1
Temp.:
24.7 °C
Concentration:
1 vol%
Key result
pH value:
2.7
Temp.:
24.7 °C
Concentration:
10 vol%

Any other information on results incl. tables

For the concentration of 1 % in water, 1 g of the test item were weighted and filled up to 100 g with purified water. For the concentration of 1 0 % in water, 10 g of the test item were weighted and filled up to 100 g with purified water. 

Applicant's summary and conclusion

Conclusions:
The pH-value at a concentration of 10 g/L is determined to be 3.1 and at a concentration of 100 g/L it is determined to be 2.7 at 24.7 °C.