Tris(hydroxymethyl)aminomethanemolecular biology grade
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C4H11NO3 • Mr 121.1 • CAS [77-86-1]
Tris(hydroxymethyl)aminomethane (Tris) of ultrapure buffer quality for sensitive assays in molecular biology with very low UV absorption, DNase, RNase, Protease not detected.
With a pKa of 8.1 Tris base is optimal for preparation of buffers in the physiological pH range of 7.3 to 7.5.
It is used as a component in buffer solutions in numerous applications:
| 
Assay (titr.) Heavy metals (Pb) Iron Arsenic (As) Magnesium (Mg)  | 
min. 99.9 % max. 10 ppm max. 10 ppm max. 1 ppm max. 1 ppm  | 
EINECS: 201-064-4 • WGK: 2L • HS: 29221900
Storage Temperature: +15 °C to +30 °C