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Diss Factsheets

Physical & Chemical properties

pH

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Administrative data

Endpoint:
pH
Type of information:
experimental study
Adequacy of study:
supporting 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:
2012
Report date:
2012

Materials and methods

Principles of method if other than guideline:
pH-measurements (10g/l) taken in the laboratory for solutions of pure, ATMP-N-Oxide with increasing stoichometric amounts of the corresponding base (NaOH).
GLP compliance:
not specified

Test material

Constituent 1
Reference substance name:
[nitrilotris(methylene)]trisphosphonic acid N-oxide
EC Number:
239-940-3
EC Name:
[nitrilotris(methylene)]trisphosphonic acid N-oxide
Cas Number:
15834-10-3
Molecular formula:
C3H12NO10P3
Details on test material:
- Name of test material (as cited in study report): Aminotris(methylene phosphonic acid)-N-Oxide

- Molecular weight (if other than submission substance): 315 g/mol

- Analytical purity: 95.4%

- Lot/batch No.: A3185

- Expiration date of the lot/batch: February 2013

- Stability under test conditions: stable under storage conditions

- Storage condition of test material: in a closed containment at room temperature, protected from humidity and sunlight.

Results and discussion

pH valueopen allclose all
pH value:
2.4
Temp.:
20 °C
Concentration:
10 g/L
Remarks on result:
other: Stoichiometric loading of base equivalent to ATMP-N-Oxide
pH value:
2.7
Temp.:
20 °C
Concentration:
10 g/L
Remarks on result:
other: Stoichiometric loading of base equivalent to ATMP-N-Oxide-1
pH value:
3.3
Temp.:
20 °C
Concentration:
10 g/L
Remarks on result:
other: Stoichiometric loading of base equivalent to ATMP-N-Oxide-2
pH value:
4.8
Temp.:
20 °C
Concentration:
10 g/L
Remarks on result:
other: Stoichiometric loading of base equivalent to ATMP-N-Oxide-3
pH value:
6.7
Temp.:
20 °C
Concentration:
10 g/L
Remarks on result:
other: Stoichiometric loading of base equivalent to ATMP-N-Oxide-4
pH value:
10.2
Temp.:
20 °C
Concentration:
10 g/L
Remarks on result:
other: Stoichiometric loading of base equivalent to ATMP-N-Oxide-5
pH value:
11.3
Temp.:
20 °C
Concentration:
10 g/L
Remarks on result:
other: Stoichiometric loading of base equivalent to ATMP-N-Oxide-6

Applicant's summary and conclusion

Conclusions:
The pH of ATMP-N-Oxide-H has been determined using an acceptable scientific method. The result is considered reliable.