Buffers and pH Adjusting Agents
Excipient | pH Range | Example |
---|---|---|
Acetate | ||
Sodium | 2.5–7.0 | Syntocinon® (Novartis) |
Acetic acid | 2.5–7.2 | Syntocinon® (Novartis) |
Glacial acetic acid | 3.5–7.0 | Brevibloc® (Ohmeda) |
Ammonium | 6.8–7.8 | Bumex Injection® (Roche) |
Ammonium sulfate | - | Innovar® (Astra) |
Ammonium hydroxide | - | Triostat® (Jones Medical) |
Arginine | 7.0–7.4 | Retavase® (Boehringer) |
Aspartic acid | 5.0–5.6 | Pepcid® (Merck) |
Benzene sulfonic acid | 3.25–3.65 | Nimbex® (Glaxo Wellcome) |
Benzoate sodium/acid | 3.5–6.9 | Valium® (Roche) |
Bicarbonate, sodium | 5.5–11.0 | Cenolate® (Abbott) |
Boric acid/sodium | Comvax® (Merck) | |
Carbonate, sodium | 4.0–11.0 | Hyperab® (Bayer) |
Carbon dioxide | - | Serentil® (Boehringer) used to fill headspace |
Citrate | ||
Acid | 2.5–9.0 | DTIC-Dome® (Bayer) |
Sodium | 3.0–8.5 | Amikin® (Bristol Myers) |
Disodium | 6.1 | Cerezyme® (Genzyme) |
Trisodium | 6.1 | Cerezyme® (Genzyme) |
Diethanolamine | 9.5–10.5 | Bactim IV® (Roche) |
Glucono delta lactone | 5.5–7.0 | Quinidine Gluconate (Lilly) |
Glycine/glycine HCl | 2.5–10.8 | Hep-B Gammagee® (Merck) |
Histidine/histidine HCl | 5.0–6.5 | Doxil® (Sequus) |
Hydrochloric acid | Broad range | Amicar® (Immunex) |
Hydrobromic acid | 3.5–6.5 | Scopolamine (UDL) |
Lactate sodium/acid | 2.7–5.8 | Innovar® (Janssen) |
Lysine (L) | - | Eminase® (Roberts) |
Maleic acid | 3.0–5.0 | Librium® (Roche) |
Meglumine | 6.5–11.0 | Magnevist® (Berlex) |
Methanesulfonic acid | 3.2–4.0 | DHE-45® (Novartis) |
Monoethanolamine | 8.0–9.0 | Terramycin (Pfizer) |
Phosphate | ||
Acid | 6.5–8.5 | Saizen® (Serono Labs) |
Monobasic potassium | 6.7–7.3 | Zantac® (Glaxo-Wellcome) |
Dibasic potassium | 6.7–7.3 | Aminosyn® (Hospira) |
Monobasic sodium* | 2.5–8.0 | Pregnyl® (Organon) |
Dibasic sodium** | 2.5–8.3 | Zantac® (Glaxo-Wellcome) |
Tribasic sodium | - | Synthroid® (Knoll) |
Sodium hydroxide | Broad range | Optiray® (Mallinckrodt) |
Succinate sodium/disodium | 5.0–6.0 | AmBisome® (Fujisawa) |
Sulfuric acid | 3.0–7.0 | Nebcin® (Lilly) |
Tartrate sodium/acid | 2.5–6.2 | Methergine® (Novartis) |
Tromethamine (Tris) | 6.5–9.0 | Optiray® (Mallinckrodt) |