Tris(hydroxymethyl)aminomethane (TRIS, Trometamol) ≥99.9% buffer substance, for analysis and biochemical purposes
:77-86-1
:
:NH₂C(CH₂OH)₃
:MFCD00004679
:121.14 g/mol
:13,09842
:357 °C (1013 hPa)
:169…172 °C
:1.328 g/cm³ (20 °C)
:201-064-4
:GHS07
:Ambient
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- 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