Synonyms: TRIS HCl; TRIS hydrochloride; Tris(hydroxymethyl)aminomethane hydrochloride
Formula: NH2C(CH2OH)3 · HCl
Formula Weight: 157.60
CAS No.: 1185-53-1
Purity: ≥99.0% (titration)
Application: 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.
Other Notes: Easily compare specifications for Trizma HCl products with the Trizma HCl specification table.
Legal Information: Trizma is a registered trademark of Sigma-Aldrich Co. LLC
Packaging: 1 kg in poly bottle
Packaging: 100, 250, 500 g in poly bottle
Packaging: 5, 10, 25, 50 kg in poly drum
Abs.: A40%/290 ≤0.05
Assay: ≥99.0% (titration)
Cation Traces: heavy metals (as Pb): ≤5 ppm
Color: white
Form: crystalline
Grade: reagent grade
Impurities: ≤0.5% water (Karl Fischer)
MP: 150-152°C
pKa (25°C): 8.1
Quality Level: ELITE
Solubility: H2O: soluble, clear, colorless
Useful pH Range: 7.0 - 9.0