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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
17 June 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2018

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
CIPAC MT 75 (Determination of pH Values)
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.7000 (pH)
GLP compliance:
yes (incl. QA statement)

Test material

Constituent 1
Chemical structure
Reference substance name:
Benzenesulfonic acid, 4-C20-24 (even numbered) sec-alkyl derivs., sodium salts
EC Number:
947-999-8
Molecular formula:
C30 H53 O3 S1 Na1
IUPAC Name:
Benzenesulfonic acid, 4-C20-24 (even numbered) sec-alkyl derivs., sodium salts
Test material form:
liquid: viscous
Details on test material:
- Physical state: viscous liquid
- Appearance: dark brown
Specific details on test material used for the study:
- Batch n°: 2712-106
- Analytical purity: 100%
- Expiration date: not indicated
- Storage condition: at room temperature

Reagents

Reagent:
water

Results and discussion

pH valueopen allclose all
Key result
pH value:
7.87
Concentration:
10 g/L
Remarks on result:
other: mean of 3 tests
Key result
pH value:
>= 7.79 - <= 7.98
Concentration:
10 g/L
Remarks on result:
other: pH range of 3 tests

Any other information on results incl. tables

Table: Full test results

Run

Test Item Quantity (g)

Volume of Water (ml)

Solution Concentration (%)

Stirring Time (min)

pH

1

1.016

100

1.02

9.48

7.98

2

0.999

100

1.00

12.13

7.84

3

1.007

100

1.01

12.09

7.79

pH of water used was 8.86. The sample slowly dissolved to produce a cloudy suspension.

Applicant's summary and conclusion

Conclusions:
The pH of the solution was between 7.79 and 7.98 and the average pH was determined to be 7.87.