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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
December 12-20, 2012
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Study was performed according to a guideline and the results are reliable (RSD-%: 0.1). The result is for a 25 % water solution of SEX.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2012
Report date:
2012

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: SFS 3021
Deviations:
no
Principles of method if other than guideline:
Instrument: Metrohm 744 pH Meter
Method: The pH-measurement method used bases on the standard method SFS 3021.
pH-Instrument calibration: The instrument was calibrated by using two commercial pH standards, pH 7 and pH 10
Sample preparation, 25 weight % water solution:
On request of the customer, 25 weight-% water solution was used in pH measurements. Ca. 5 g of SEX sample was dissolved in 20 ml of
milli-Q water. This concentration was chosen based on the maximum concentration of the substance in use application.
pH-Measurements: From the sample solution, measurements were done (magnetic stirring during measurements). Measurement temperature was 20-21 °C.
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
Sodium O-ethyl dithiocarbonate
EC Number:
205-440-9
EC Name:
Sodium O-ethyl dithiocarbonate
Cas Number:
140-90-9
Molecular formula:
C3H6OS2.Na
IUPAC Name:
sodium (ethoxymethanethioyl)sulfanide
Test material form:
solid - liquid: suspension
Remarks:
migrated information: dispersion
Details on test material:
- Name of test material (as cited in study report): sodium ethyl xanthate, sodium o-ethyl dithiocarbonate (SEX)
-25 weight-% xanthate-solution: Ca. 5 g of SEX sample was dissolved in 20 ml of milli-Q water.

Results and discussion

pH value
pH value:
12.2
Temp.:
20 °C
Concentration:
ca. 25 other: weight-%
Remarks on result:
other: RSD-% (n=4 ): 0.1

Applicant's summary and conclusion

Conclusions:
pH of 25 m-% water solution is 12.2 at 20 deg. C determined by using a standard method SFS 3021.
Executive summary:

This information is used for CSA to evaluate the corrosivity of the substance.