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| Salt | pKA | Buffer pH range |
equilibrium | UV cut-off |
|---|---|---|---|---|
| Ammonium acetate | 4.76
9.2 |
3.8-5.8
8.2-10.2 |
HAc ↔ Ac−
NH4+ ↔ NH3 |
205 |
| Ammonium formate | 3.8
9.2 |
2.8-4.8
8.2-10.2 |
HCOOH ↔ HCOO−
NH4+ ↔ NH3 |
200 |
| Potassium phosphate | 2.1
7.2 |
1.1-3.1
6.2-8.2 |
H3PO4 ↔ H2PO4−
H2PO4− ↔ HPO42− |
190 |
| Triethylammonium acetate | 4.76
11.01 |
3.8-5.8
10.-12.0 |
HAc ↔ Ac−
Et3NH + ↔ Et3N |
235 |
| Salt | pKA | Buffer pH range |
equilibrium | UV cut-off |
|---|---|---|---|---|
| Acetic acid | 4.76 | - | HAc ↔ Ac− | 205 |
| Formic acid | 3.8 | - | HCOOH ↔ HCOO− | 200 |
| Trifluroacetic acid | 0.3 | - | F3CCOOH ↔ F3CCOO− | 210 |
| Trietylamine | 11.01 | - | Et3NH+ ↔ Et3N | 235 |
| Diethylamine | 10.5 | - | Et2NH2+ ↔ Et2HN | 235 |
| Ammonium hydroxide | 9.2 | - | NH4+ ↔ NH3 | 190 |