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T1375 TES,Free Acid

Synonym： 2-[(2-Hydroxy-1,1-bis(hydroxymethyl)ethyl)amino]ethanesulfonic acid

N-[Tris(hydroxymethyl)methyl]-2-aminoethanesulfonic acid

TES free acid

Molecular Formula：C₆H₁₅NO₆S

Molecular Weight：229.25

CAS Number： 7365-44-8

Properties：

assay …………………………………………………………≥99% (titration)

useful pH range ……………………………………………………………6.8 - 8.2

pKa (25 °C) ………………………………………………………………...7.5

mp ……………………………………………………………………………~225 °C (dec.)

Safety Statements： 22-24/25

TEST	SPECIFICATION
APPEARANCE	WHITE CRYSTALLINE POWDER
SOLUBILITY	CLEAR COLORLESS SOLUTION AT 25G PLUS 50ML OF WATER
WATER BY KARL FISCHER	NMT 0.2%
UV ABSORBANCE	NMT 0.1 AT 290NM (33%W/W)
HEAVY METALS	NMT 5 PPM (AS LEAD)
PURITY BY NAOH TITRATION	NLT 99% (CORRECTED FOR WATER CONTENT)
RECOMMENDED RETEST	5 YEARS

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