TES | FabriChem

Synonyms

2-[(2-Hydroxy-1,1-bis(hydroxymethyl)ethyl)amino]ethanesulfonic acid;
N-[Tris(hydroxymethyl)methyl]-2-aminoethanesulfonic acid;
2-[Tris-(Hydroxymethyl)methyl amino}-1-ethane sulfonic acid

Technical Data

CAS Number: 7365-44-8
Molecular Formula: C₆H₁₅NO₆S
Molecular Weight: 229.25
Beilstein Registry Number: 1957061
EC Number: 230-906-3

FabriChem Specifications

ITEMS	SPECIFICATIONS
Assay (Titration, dried basis)	99.0% Min.
Appearance	White Powder
Solubility (5% in H2O)	Clear and Complete
Moisture ( LOD )	1.0% Max.
Pka	7.2 – 7.6
pH ( 1% in H2O )	4.2 – 4.8
UV (0.1M in H2O):
A_{260 nm}	0.02 Max
A_{280 nm}	0.02 Max.

Molecular Structure

tes-structure

About

TES [2-[Tris-(Hydroxymethyl)methyl amino}-1-ethane sulfonic acid] is one of the known buffering agents used for biochemical and biological research. These buffering agents are now collectively referred to as “Good’s Buffers”. Good’s Buffers are important tools used in modern biological laboratories for a variety of their properties, including but not limited to being zwitterionic (aka hybrid or dipolar) compounds.