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EC number: 948-229-3 | CAS number: -
Dissociation constant
Administrative data
Link to relevant study record(s)
- Endpoint:
- dissociation constant
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- test procedure in accordance with generally accepted scientific standards and described in sufficient detail
- Justification for type of information:
- Work performed in manufacturer's laboratories using well established methods
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 112 (Dissociation Constants in Water)
- GLP compliance:
- no
- Specific details on test material used for the study:
Batch number of test material: C-04-3584- Dissociating properties:
- yes
- No.:
- #1
- pKa:
- 0.002
- Temp.:
- 20 °C
- Conclusions:
- The substance dissociates under all normal environmental and biological conditions.
Reference
Titration
V, mL |
pH |
DV |
DpH |
DpH/DV |
0.00 |
2.18 |
1.00E+00 |
5.0000E-02 |
5.00E-02 |
1.00 |
2.23 |
2.00E+00 |
5.0000E-02 |
2.50E-02 |
3.00 |
2.28 |
2.00E+00 |
6.0000E-02 |
3.00E-02 |
5.00 |
2.34 |
2.00E+00 |
1.2000E-01 |
6.00E-02 |
7.00 |
2.46 |
2.00E+00 |
1.0000E-01 |
5.00E-02 |
9.00 |
2.56 |
2.00E+00 |
1.3000E-01 |
6.50E-02 |
11.00 |
2.69 |
2.00E+00 |
1.8000E-01 |
9.00E-02 |
13.00 |
2.87 |
2.00E+00 |
2.2000E-01 |
1.10E-01 |
15.00 |
3.09 |
2.00E+00 |
4.0000E-01 |
2.00E-01 |
17.00 |
3.49 |
2.00E+00 |
1.0700E+00 |
5.35E-01 |
19.00 |
4.56 |
1.00E+00 |
1.4500E+00 |
1.45E+00 |
20.00 |
6.01 |
5.00E-01 |
8.1000E-01 |
1.62E+00 |
20.50 |
6.82 |
5.00E-01 |
7.2000E-01 |
1.44E+00 |
21.00 |
7.54 |
5.00E-01 |
5.4000E-01 |
1.08E+00 |
21.50 |
8.08 |
5.00E-01 |
4.1000E-01 |
8.20E-01 |
22.00 |
8.49 |
5.00E-01 |
3.5000E-01 |
7.00E-01 |
22.50 |
8.84 |
5.00E-01 |
2.7000E-01 |
5.40E-01 |
23.00 |
9.11 |
5.00E-01 |
2.1000E-01 |
4.20E-01 |
23.50 |
9.32 |
5.00E-01 |
1.4000E-01 |
2.80E-01 |
24.00 |
9.46 |
1.00E+00 |
2.8000E-01 |
2.80E-01 |
25.00 |
9.74 |
1.00E+00 |
1.3000E-01 |
1.30E-01 |
26.00 |
9.87 |
1.00E+00 |
2.1000E-01 |
2.10E-01 |
27.00 |
10.08 |
1.00E+00 |
1.4000E-01 |
1.40E-01 |
28.00 |
10.22 |
1.00E+00 |
2.9000E-01 |
2.90E-01 |
29.00 |
10.51 |
1.00E+00 |
2.6000E-01 |
2.60E-01 |
30.00 |
10.77 |
1.00E+00 |
2.9000E-01 |
2.90E-01 |
31.00 |
11.06 |
-3.10E+01 |
-1.1060E+01 |
3.57E-01 |
Description of key information
Key value for chemical safety assessment
- pKa at 20°C:
- 0.001
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