Tris(hydroxymethyl)aminomethane (TRIS, Trometamol) ≥99.9% buffer substance, for analysis and biochemical purposes

Supplier: VWR Chemicals
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Synonyms: 2-Amino-2-(hydroxymethyl)propane-1,3-diol(tris), Tromethamine, Tris(hydroxymethyl)methylamine, 2-Amino-2-(hydroxymethyl)propane-1,3-diol, 2-Amino-2-(hydroxymethyl)-1,3-propanediol, Trizma(R) base, TRIS base, THAM

28808.294EA 15634 INR
28808.294 28808.440
Tris(hydroxymethyl)aminomethane (TRIS, Trometamol) ≥99.9% buffer substance, for analysis and biochemical purposes
Tris(hydroxymethyl)aminomethane (TRIS, Trometamol)
Formula: NH₂C(CH₂OH)₃
MW: 121,14 g/mol
Boiling Pt: 357 °C (1013 hPa)
Melting Pt: 169…172 °C
Density: 1,328 g/cm³ (20 °C)
Storage Temperature: Ambient
MDL Number: MFCD00004679
CAS Number: 77-86-1
EINECS: 201-064-4
Merck Index: 13,09842
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Specification Test Results

Assay (calculated on dried substance) Min. 99.9 %
Colouration (20 %; water) Max. 20 APHA
Melting point Min. 170 °C
pH (20°C; 5 %) 10.0 - 11.5
Heavy metals (as Pb) Max. 1 ppm
Insolubility in water Max. 50 ppm
Water Max. 0.2 %
Absorbance (260 nm) (1 mol/l) Max 0.05
Absorbance (280 nm) (1 mol/l) Max. 0.03
Absorbance (430 nm) (1 mol/l) Max. 0.004

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