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EC number: 911-811-2 | CAS number: -
pH
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:
- 2 012
- 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, cyclic HEBMP-H with increasing stoichometric amounts of the corresponding base (NaOH).
- GLP compliance:
- not specified
Test material
- Reference substance name:
- [(2-hydroxy-2-oxo-1,4,2-oxazaphosphinan-4-yl)methyl]phosphonic acid
- Cas Number:
- 32422-02-9
- Molecular formula:
- C4H11NO6P2
- IUPAC Name:
- [(2-hydroxy-2-oxo-1,4,2-oxazaphosphinan-4-yl)methyl]phosphonic acid
Constituent 1
Results and discussion
pH valueopen allclose all
- pH value:
- 2.8
- Temp.:
- 20 °C
- Concentration:
- 10 g/L
- Remarks on result:
- other: Stoichiometric loading of base equivalent to cyclic HEBMP
- pH value:
- 4.1
- Temp.:
- 20 °C
- Concentration:
- 10 g/L
- Remarks on result:
- other: Stoichiometric loading of base equivalent to cyclic HEBMP-1
- pH value:
- 6.7
- Temp.:
- 20 °C
- Concentration:
- 10 g/L
- Remarks on result:
- other: Stoichiometric loading of base equivalent to cyclic HEBMP-2
- pH value:
- 10
- Temp.:
- 20 °C
- Concentration:
- 10 g/L
- Remarks on result:
- other: Stoichiometric loading of base equivalent to HEBMP-3
Any other information on results incl. tables
Table 1: Titration in water
Determination 1
Sample mass (1) cyc-HEBMP (mg) 69.71
Equivalent NaOH |
0 |
1 |
2 |
3 |
1N NaOH (ml) |
0.000 |
0.301 |
0.602 |
0.903 |
pH |
2.74 |
4.34 |
7.26 |
10.31 |
Determination 2
Sample mass (1) cyc-HEBMP (mg) 69.71
Equivalent NaOH |
0 |
1 |
2 |
3 |
1N NaOH (ml) |
0.000 |
0.301 |
0.602 |
0.903 |
pH |
2.73 |
4.20 |
7.05 |
10.16 |
Average |
2.74 |
4.27 |
7.16 |
10.24 |
Table 2: Titration in 0.2 M KCl
Determination 1
Sample mass (1) cyc-HEBMP (mg) 69.71
Equivalent NaOH |
0 |
1 |
2 |
3 |
1N NaOH (ml) |
0.000 |
0.301 |
0.602 |
0.903 |
pH |
2.78 |
4.00 |
6.56 |
9.84 |
Determination 2
Sample mass (1) cyc-HEBMP (mg) 69.71
Equivalent NaOH |
0 |
1 |
2 |
3 |
1N NaOH (ml) |
0.000 |
0.301 |
0.602 |
0.903 |
pH |
2.80 |
4.10 |
6.77 |
10.16 |
Average |
2.79 |
4.05 |
6.67 |
10.00 |
Applicant's summary and conclusion
- Conclusions:
- The pH of cyclic-HEBMP has been determined using an acceptable scientific method. The result is considered reliable.
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