Synonyms: Trizma® base; 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% (titration)
General description: A 40% (w/w) solution in water is clear, colorless to faint yellow
Other Notes: Easily compare specifications for Trizma products with the Trizma specification table.
Legal Information: Trizma is a registered trademark of Sigma-Aldrich Co. LLC
Abs.: A40%/290 ≤0.4
Assay: ≥99% (titration)
BP: 219-220°C/10 mmHg(lit.)
Cation Traces: heavy metals (as Pb): ≤5 ppm
Color: white to off-white
Description: aminopeptidase substrate
Form: crystalline
Impurities: ≤0.5% water (Karl Fischer)
MP: 167-172°C(lit.)
pKa (25°C): 8.1
Useful pH Range: 7 - 9