Synonyms: 2-Amino-2-(hydroxymethyl)-1,3-propanediol; THAM; Tris base; Tris(hydroxymethyl)aminomethane; Trometamol
Formula: NH2C(CH2OH)3
Formula Weight: 121.14
CAS No.: 77-86-1
Purity: ≥99.5%
Analysis Note: Exact concentration, expiry date, traceability and detailed information on certification can be found on the certificate and certification report, included in each package. Content and expiry date on label.
Other Notes: The pH values of all buffers are temperature- and concentration-dependent. For Tris buffers, pH increases about 0.03 unit per °C decrease in temperature, and decreases 0.03-0.05 unit per ten-fold dilution.
For precise applications, use a carefully calibrated pH meter with a glass/calomel combination electrode.
Legal Information: Trizma is a registered trademark of Sigma-Aldrich Co. LLC
Assay: ≥99.5%
BP: 219-220°C/10 mmHg(lit.)
Description: aminopeptidase substrate
MP: 167-172°C(lit.)
pKa (25°C): 8.1
Quality: certified by BAM, according to ISO 17025
Useful pH Range: 7 - 9