Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 252-156-6 | CAS number: 34690-00-1
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 (10 g/L) taken in the laboratory for solutions of pure, BHMT-H with increasing stoichometric amounts of the corresponding base (NaOH).
- GLP compliance:
- not specified
Test material
- Reference substance name:
- [[(phosphonomethyl)imino]bis[hexamethylenenitrilobis(methylene)]]tetrakisphosphonic acid
- EC Number:
- 252-156-6
- EC Name:
- [[(phosphonomethyl)imino]bis[hexamethylenenitrilobis(methylene)]]tetrakisphosphonic acid
- Cas Number:
- 34690-00-1
- Molecular formula:
- C17H44N3O15P5
- IUPAC Name:
- [[(phosphonomethyl)imino]bis[hexamethylenenitrilobis(methylene)]]tetrakisphosphonic acid
Constituent 1
Results and discussion
pH valueopen allclose all
- pH value:
- 2.7
- Temp.:
- 20 °C
- Concentration:
- 10 g/L
- Remarks on result:
- other: Stoichiometric loading of base equivalent to BHMT
- pH value:
- 2.9
- Temp.:
- 20 °C
- Concentration:
- 10 g/L
- Remarks on result:
- other: Stoichiometric loading of base equivalent to BHMT-1
- pH value:
- 3.5
- Temp.:
- 20 °C
- Concentration:
- 10 g/L
- Remarks on result:
- other: Stoichiometric loading of base equivalent to BHMT-2
- pH value:
- 4.6
- Temp.:
- 20 °C
- Concentration:
- 10 g/L
- Remarks on result:
- other: Stoichiometric loading of base equivalent to BHMT-3
- pH value:
- 5.3
- Temp.:
- 20 °C
- Concentration:
- 10 g/L
- Remarks on result:
- other: Stoichiometric loading of base equivalent to BHMT-4
- pH value:
- 5.8
- Temp.:
- 20 °C
- Concentration:
- 10 g/L
- Remarks on result:
- other: Stoichiometric loading of base equivalent to BHMT-5
- pH value:
- 6.5
- Temp.:
- 20 °C
- Concentration:
- 10 g/L
- Remarks on result:
- other: Stoichiometric loading of base equivalent to BHMT-6
- pH value:
- 7.7
- Temp.:
- 20 °C
- Concentration:
- 10 g/L
- Remarks on result:
- other: Stoichiometric loading of base equivalent to BHMT-7
- pH value:
- 10.8
- Temp.:
- 20 °C
- Concentration:
- 10 g/L
- Remarks on result:
- other: Stoichiometric loading of base equivalent to BHMT-8
- pH value:
- 11.2
- Temp.:
- 20 °C
- Concentration:
- 10 g/L
- Remarks on result:
- other: Stoichiometric loading of base equivalent to BHMT-9
Any other information on results incl. tables
Table 1: Titration in water
Determination 1
Sample mass (mg) 114.4
Equivalent NaOH |
0 |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
1N NaOH (ml) |
0.000 |
0.150 |
0.300 |
0.450 |
0.600 |
0.750 |
0.900 |
1.050 |
1.200 |
1.350 |
1.500 |
pH |
2.67 |
2.91 |
3.60 |
5.01 |
5.76 |
6.44 |
7.11 |
8.25 |
10.93 |
11.29 |
11.31 |
Determination 2
Sample mass (mg) 114.4
Equivalent NaOH |
0 |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
1N NaOH (ml) |
0.000 |
0.150 |
0.300 |
0.450 |
0.600 |
0.750 |
0.900 |
1.050 |
1.200 |
1.350 |
1.500 |
pH |
2.67 |
2.95 |
3.72 |
4.98 |
5.78 |
6.52 |
7.22 |
8.28 |
10.91 |
11.31 |
11.49 |
Average |
2.67 |
2.93 |
3.66 |
5.00 |
5.77 |
6.48 |
7.17 |
8.27 |
10.92 |
11.30 |
11.40 |
Table 2: Titration in 0.2 M KCl
Determination 1
Sample mass (mg) 114.4
Equivalent NaOH |
0 |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
1N NaOH (ml) |
0.000 |
0.150 |
0.300 |
0.450 |
0.600 |
0.750 |
0.900 |
1.050 |
1.200 |
1.350 |
1.500 |
pH |
2.70 |
2.94 |
3.53 |
4.58 |
5.24 |
5.83 |
6.45 |
7.65 |
10.81 |
11.18 |
11.38 |
Determination 2
Sample mass (mg) 114.4
Equivalent NaOH |
0 |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
1N NaOH (ml) |
0.000 |
0.150 |
0.300 |
0.450 |
0.600 |
0.750 |
0.900 |
1.050 |
1.200 |
1.350 |
1.500 |
pH |
2.70 |
2.93 |
3.55 |
4.60 |
5.28 |
5.80 |
6.52 |
7.80 |
10.76 |
11.15 |
11.40 |
Average |
2.70 |
2.94 |
3.54 |
4.59 |
5.26 |
5.82 |
6.49 |
7.73 |
10.79 |
11.17 |
11.39 |
Applicant's summary and conclusion
- Conclusions:
- The pH of the substance has been determined using an acceptable scientific method. The result is considered reliable.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
