TAPS (buffer)
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| Names | |
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| Preferred IUPAC name
3-{[1,3-Dihydroxy-2-(hydroxymethyl)propan-2-yl]amino}propane-1-sulfonic acid | |
| Other names
N-Tris(hydroxymethyl)methyl-3-aminopropanesulfonic acid
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3D model (JSmol)
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PubChem CID
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| Properties | |
| C7H17NO6S | |
| Molar mass | 243.27 g·mol−1 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Template:Chembox Footer/trackingTemplate:Short description
TAPS ([tris(hydroxymethyl)methylamino]propanesulfonic acid) is a chemical compound commonly used to make buffer solutions.
It can bind divalent cations, including Co(II) and Ni(II).[1]
TAPS is effective to make buffer solutions in the pH range 7.7–9.1, since it has a pKa value of 8.44 (ionic strength I = 0, 25 °C).[2]
The pH (and pKa at I ≠ 0) of the buffer solution changes with concentration and temperature, and this effect may be predicted e.g. using online calculators.[3]
References
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- ^ Page Module:Citation/CS1/styles.css has no content.Machado, Carina M. M.; Gameiro, Paula; Soares, Helena M. V. M. (2008). "Complexation of M–(buffer)x–(OH)y systems involving divalent ions (cobalt or nickel) and zwitterionic biological buffers (AMPSO, DIPSO, TAPS and TAPSO) in aqueous solution". J. Solution Chem. 37 (5): 603–617. doi:10.1007/s10953-008-9265-3. S2CID 97906177.
- ^ Page Module:Citation/CS1/styles.css has no content.Goldberg, Robert N.; Kishore, Nand; Lennen, Rebecca M. (2002). "Thermodynamic quantities for the ionization reactions of buffers" (PDF). J. Phys. Chem. Ref. Data. 31 (2): 231–370. doi:10.1063/1.1416902.
- ^ Page Module:Citation/CS1/styles.css has no content."Biological buffers". REACH Devices.
