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Administrative data

Endpoint:
pH
Type of information:
experimental study
Adequacy of study:
key study
Study period:
May 11th, 2010 to July 28th, 2010
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Guideline study (no GLP) in compliance with the european method R CE2003/2003-4

Data source

Referenceopen allclose all

Reference Type:
study report
Title:
Unnamed
Year:
2010
Report date:
2010
Reference Type:
study report
Title:
Unnamed
Year:
2010
Report date:
2010

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: R CE2003/2003-4
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
calcium dipotassium disodium trisulfate
EC Number:
914-100-5
Molecular formula:
K2SO4,Na2SO4,CaSO4
IUPAC Name:
calcium dipotassium disodium trisulfate

Results and discussion

pH valueopen allclose all
pH value:
6.7
Temp.:
21.6 °C
Concentration:
10 vol%
Remarks on result:
other: sample: RN10-07299.003
pH value:
6.2
Temp.:
22.05 °C
Concentration:
10 vol%
Remarks on result:
other: sample: RN10-07299.004
pH value:
5.2
Temp.:
22.1 °C
Concentration:
10 vol%
Remarks on result:
other: sample: RN10-07299.005
pH value:
5.9
Temp.:
21.9 °C
Concentration:
10 vol%
Remarks on result:
other: sample: RN10-07299.006

Any other information on results incl. tables

For each samples two assays were performed. The pH is the average of the two measurements.

sample n°: RN10-07299.003
Assay Sample taken (g) Concentration of solution (%) Temperature (°C) pH Average pH
1 1.0438 10 21.8 6.80 6.7
2 0.9853 10 21.4 6.68
sample n°: RN10-07299.004
Assay Sample taken (g) Concentration of solution (%) Temperature (°C) pH Average pH
1 1.0465 10 21.6 6.13 6.2
2 0.9965 10 22.5 6.16
sample n°: RN10-07299.005
Assay Sample taken (g) Concentration of solution (%) Temperature (°C) pH Average pH
1 1.0781 10 21.9 5.21 5.2
2 1.0006 10 22.3 5.22

sample n°: RN10-07299.006
Assay Sample taken (g) Concentration of solution (%) Temperature (°C) pH Average pH
1 1.0068 10 21.9 5.91 5.9
2 1.0315 10 21.9 5.80

Applicant's summary and conclusion

Conclusions:
pH of potassic extracts is slightly acid. it is between 5,2 and 6,7.
Executive summary:

The pH of four samples of potassic extracts was carried out according to the EU uropean method R CE2003/2003-4. The pH of the four samples is between 5,2 and 6,7.