Trizma® hydrochloride
SIGMA/T6666 - pH 3.5-5.0 (0.5 M in H2O), BioXtra, ≥99.0% (titration)
Synonym: TRIS HCl; TRIS hydrochloride; Tris(hydroxymethyl)
CAS Number: 1185-53-1
Empirical Formula (Hill Notation): C4H11NO3 · HCl
Molecular Weight: 157.60
EC Number: 214-684-5
MDL Number: MFCD00012590
Linear Formula: NH2C(CH2OH)3 · HCl
Product Type: Chemical
| absorption | ≤0.010 at 280 in H2O at 0.5 M |
| ≤0.015 at 260 in H2O at 0.5 M | |
| anion traces | sulfate (SO42-): ≤0.005% |
| application(s) | diagnostic assay manufacturing |
| assay | ≥99.0% (titration) |
| cation traces | Al: ≤0.0005% |
| As: ≤0.0001% | |
| Ba: ≤0.0005% | |
| Bi: ≤0.0005% | |
| Ca: ≤0.001% | |
| Cd: ≤0.0005% | |
| Co: ≤0.0005% | |
| Cr: ≤0.0005% | |
| Cu: ≤0.0005% | |
| Fe: ≤0.0005% | |
| K: ≤0.005% | |
| Li: ≤0.0005% | |
| Mg: ≤0.0005% | |
| Mn: ≤0.0005% | |
| Mo: ≤0.0005% | |
| Na: ≤0.005% | |
| Ni: ≤0.0005% | |
| Pb: ≤0.0005% | |
| Sr: ≤0.0005% | |
| Zn: ≤0.0005% | |
| form | powder |
| ign. residue (900°C) | ≤0.2% (as SO4) |
| impurities | Insoluble matter, passes filter test |
| InChI | 1S/C4H11NO3.ClH/c5-4(1-6, |
| InChI key | QKNYBSVHEMOAJP-UHFFFAOYSA |
| loss | ≤0.2% loss on drying, 110°C |
| mp | 150-152 °C |
| pH | 3.5-5.0 (0.5 M in H2O) |
| pKa (25 °C) | 8.1 |
| product line | BioXtra |
| Quality Level | 400 ![]() |
| SMILES string | Cl.NC(CO)(CO)CO |
| solubility | H2O: 0.5 M, clear, colorless |
| useful pH range | 7.0-9.0 |
| Legal Information: | Trizma is a registered trademark of Merck KGaA, Darmstadt, Germany |
| Other Notes: | Easily compare specifications for Trizma HCl products with the Trizma HCl specification table . |
| 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. |
| Packaging: | 1 kg in poly bottle |
| Packaging: | 50, 250 g in poly bottle |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 1 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Purity | ≥99.0% (titration) |
| mp | 150-152 °C |
| UNSPSC | 12352104 |

