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abbr. for bis(2‐hydroxyethyl)imino‐tris(hydroxymethyl)methane; 2‐[bis(2‐hydroxyethyl)amino]‐2‐(hydroxymethyl)‐propane‐1,3‐diol. A buffer substance useful for the calibration of glass electrodes and for the preparation of biochemical and biological buffer solutions; pKa (25°C) = 6.5. It is inexpensive, stable, and readily crystallizable.


Subjects: Chemistry.

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