3-[[1,3-dihydroxy-2-(hydroxymethyl)propan-2-yl]amino]propane-1-sulfonic acid
CAS No.: 29915-38-6 Formula: C7H17NO6S
Weight: 243.27800
Synonyms: [(2-Hydroxy-1,1-bis(hydroxymethyl)ethyl)amino]-1-propanesulfonic acid; 3-((1,3-Dihydroxy-2-(hydroxymethyl)propan-2-yl)amino)propane-1-sulfonic acid; T3A; N-Tris(hydroxymethyl)methyl-3-aminopropanesulfonic Acid [Good's buffer component; 3-(Tris(Hydroxymethyl)Methylamino)-1-Propanesulfonic Acid;
TAPS is used to make buffer solutions. It has a pKa value of 8.44 (ionic strength I=0, 25°C). It can be used to make buffer solutions in the pH range 7.7–9.1. The pH (and pKa at I≠0) of the buffer solution changes with concentration and temperature, and this effect may be predicted using online calculators. Binds Co(II), Ni(II).