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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;


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Description

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).

Basic Information
CAS No.:
29915-38-6
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;
Formula:
C7H17NO6S
Molecular Weight:
243.27800
PSA:
135.47000
LogP:
-0.95870
Properties
Appearance & Character:
Density:
Melting Point:
230-235 °C (dec.)
Boiling Point:
Flash Point:
110 °C
Storage Conditions:
Safety Info
Customs Code:
29221980
WGK Germany:
3
Hazard Category Code:
R36/37/38
Security Instructions:
S22; S24/25; S36; S26
Dangerous Goods Sign:
Xi