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Administrative data

Endpoint:
pH
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2011-2012
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP and guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2013
Report date:
2013

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
CIPAC MT 75 (Determination of pH Values)
Deviations:
no
GLP compliance:
yes (incl. QA statement)

Test material

Constituent 1
Reference substance name:
dodecane-12-lactam, manufacturing of, by-products from, distillation residues
EC Number:
923-400-5
IUPAC Name:
dodecane-12-lactam, manufacturing of, by-products from, distillation residues
Test material form:
solid: particulate/powder
Remarks:
migrated information: powder

Results and discussion

pH valueopen allclose all
pH value:
9.44
Temp.:
20.8 °C
Concentration:
1 other: % w/v
Remarks on result:
other: after 1 min
pH value:
9.61
Temp.:
20.9 °C
Concentration:
1 other: % w/v
Remarks on result:
other: after 2 min
pH value:
9.81
Temp.:
20.9 °C
Concentration:
1 other: % w/v
Remarks on result:
other: after 10 min

Any other information on results incl. tables

4. Results

4.1. Reference item

Di-sodium tetraborate 0.05 mol/L solution

Measured pH value 9.24 at 20.9 °C

Theoretical pH value 9.22 at 20.0 °C

The values were accepted.

4.2. Standard water D

Measured pH value 6.67 at 20.4 °C

4.3. Test item at 1% w/v in standard water D

Assay No.

After 1 min

After 2 min

After 10 min

pH values

Temperature (°C)

pH values

Temperature (°C)

pH values

Temperature (°C)

1

9.41

20.9

9.58

21.0

9.80

21.0

2

9.47

20.6

9.64

20.7

9.81

20.8

Applicant's summary and conclusion

Conclusions:
The pH mean value of the test item at 1% w/v in standard water D was:
9.44 at 20.8 °C after 1 min.
9.61 at 20.9 °C after 2 min.
9.81 at 20.9 °C after 10 min.
Executive summary:

A GLP and guideline study is available. The pH mean value of the test item at 1% w/v in standard water D is found to be: 9.44 at 20.8 °C after 1 min. 9.61 at 20.9 °C after 2 min. 9.81 at 20.9 °C after 10 min.

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