TAPSO

TAPSO is used to make buffer solutions. It has a pK_a value of 7.635 (I=0, 25°C).^[1] It can be used to make buffer solutions in the pH range 7.0-8.2.

TAPSO

Names
IUPAC name 3-[[1,3-dihydroxy-2-(hydroxymethyl)propan-2-yl]amino]-2-hydroxypropane-1-sulfonic acid
Other names 3-[N-Tris(hydroxymethyl)methylamino]-2-hydroxypropanesulfonic acid
Identifiers
CAS Number	68399-81-5 Y
3D model (JSmol)	Interactive image
ChemSpider	98301 N
ECHA InfoCard	100.063.611
PubChem CID	109334
UNII	45Q4J0071U Y
CompTox Dashboard (EPA)	DTXSID80887356
InChI InChI=1S/C7H17NO7S/c9-3-7(4-10,5-11)8-1-6(12)2-16(13,14)15/h6,8-12H,1-5H2,(H,13,14,15) N Key: RZQXOGQSPBYUKH-UHFFFAOYSA-N N InChI=1/C7H17NO7S/c9-3-7(4-10,5-11)8-1-6(12)2-16(13,14)15/h6,8-12H,1-5H2,(H,13,14,15) Key: RZQXOGQSPBYUKH-UHFFFAOYAF
SMILES O=S(=O)(O)CC(O)CNC(CO)(CO)CO
Properties
Chemical formula	C7H17NO7S
Molar mass	259.28 g/mol
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

References

1. Goldberg, R.; Kishore, N.; Lennen, R. (2002). "Thermodynamic Quantities for the Ionization Reactions of Buffers" (PDF). J. Phys. Chem. Ref. Data. 31 (2): 231–370. doi:10.1063/1.1416902. Archived from the original (PDF) on 2008-10-06. Retrieved 2017-07-13.