Tris(hydroxymethyl)aminomethane (TRIS, Trometamol) ≥99.9%, white crystalline powder, Ultrapure

Supplier: MP Biomedicals

Synonyms: Tris (Hydroxymethyl) AminomethaneTrometamol2-Amino-2-(hydroxymethyl)propane-1,3-diol

ICNA0210313310EA 1134 EUR
ICNA0210313310 ICNA0210313305 ICNA02103133.5 ICNA02103133.2 ICNA02103133.1 ICNA0210313301
Tris(hydroxymethyl)aminomethane (TRIS, Trometamol) ≥99.9%, white crystalline powder, Ultrapure
Tris(hydroxymethyl)aminomethane (TRIS, Trometamol)

Tris have been useful as buffers in a wide variety of biological systems. It has been used as a starting material for polymers, oxazolones (with carboxylic acids) and oxazolidines (with aldehydes). It does not precipitate calcium salts and is of value in maintaining solubility of manganese salts. It can be used for the direct standardization of a strong acid solution; the equivalence point can be determined either potentiometrically or by use of a suitable indicator such as 3-(4-Dimethylamino-1-naphthylazo)-4-methoxybenzenesulfonic acid. It is RNAse and DNAse-free. Tris is relatively non-hygroscopic ; but, if needed, it can be dried at 100 °C for up to 4 hours to remove any water.
Tris is used in pH control in vitro and in vivo for body fluids and in buffering systems for electrophoresis applications.Tris is used in assays used to characterize the activity and kinetics of the enzymes that catalyze SUMOylation of Small ubiquitin-like proteins (SUMO) and SUMO-dependent protein-protein interactions.


  • Ultra Pure Grade
  • Presentation: White Crystalline Powder
  • Vapor Pressure: Low at ambient temperatures
  • pKa: 8.1 at 25 °C (Lit.)
  • Storage temperature: Store at Room Temperature, desiccate.

Formula: NH₂C(CH₂OH)₃
MW: 121,14 g/mol
Boiling Pt: 219…220 °C (10 mmHg)) (lit.)
Melting Pt: 165…175 °C
MDL Number: MFCD00004679
CAS Number: 77-86-1
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Specification Test Results

Identity Test Passes
Purity ≥99.9%
FTIR Conforms to Standard
Melting Point 165-175°C
pH (5% aq soln) 10-11.5
OD260 nm (5% aq soln) ≤0.1
Loss on Drying ≤1%
Solubility (40% aq soln) Clear, Colorless Solution

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