TAPS (buffer)

TAPS

Names
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

Identifiers

CAS Number

* 29915-38-6 Y

3D model (JSmol)

* Interactive image

ChemSpider |

* 108495 N

PubChem CID

* 121591

UNII |

* Y5DC3IN066 Y

InChI

* InChI=1S/C7H17NO6S/c9-4-7(5-10,6-11)8-2-1-3-15(12,13)14/h8-11H,1-6H2,(H,12,13,14) N

Key: YNLCVAQJIKOXER-UHFFFAOYSA-N N

* InChI=1/C7H17NO6S/c9-4-7(5-10,6-11)8-2-1-3-15(12,13)14/h8-11H,1-6H2,(H,12,13,14)

Key: YNLCVAQJIKOXER-UHFFFAOYAP

SMILES

* C(CNC(CO)(CO)CO)CS(=O)(=O)O

Properties

Chemical formula

| 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).

N verify (what is YN ?)
Infobox references

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

1. ↑ 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.
2. ↑ Goldberg, Robert N.; Kishore, Nand; Lennen, Rebecca M. (2002). "Thermodynamic quantities for the ionization reactions of buffers". J. Phys. Chem. Ref. Data 31 (2): 231–370. doi:10.1063/1.1416902. http://structbio.vanderbilt.edu/wetlab/buffer.ioniz.pdf.
3. ↑ "Biological buffers". REACH Devices. http://www.reachdevices.com/Protein/BiologicalBuffers.html.

0.00

(0 votes)

Original source: https://en.wikipedia.org/wiki/TAPS (buffer). Read more

|

Retrieved from "https://handwiki.org/wiki/index.php?title=Chemistry:TAPS_(buffer)&oldid=825394"
*[CID]: Compound ID