1.0 M BIS-TRIS pH 5.5

100 mL bottle of 1.0 M BIS-TRIS pH 5.5 Optimize Reagent.
Synonyms: 2, 2-Bis(hydroxymethyl)-2, 2', 2""-nitrilotriethanol, or 2-Bis(2-hydroxyethyl)amino-2-(hydroxymethyl)-1, 3-propanediol, or Bis(2-hydroxyethyl)amino-tris(hydroxymethyl)methane.
C8H19NO5
Mr 209.24
CAS Number [6976-37-0]
EC Number 230-237-7
Beilstein Registry Number 2205275
MDL Number MFCD00002853
Purity > 98.0%
pKa = 6.4 at 20 degrees Celsius
pKa = 6.5 at 25 degrees Celsius
HR2-781 is titrated to pH 5.5 using HCl
Measured Conductivity Range of HR2-781: 38.4 - 43.1 mS/cm at 25 degrees Celsius
Measured Refractive Index of HR2-781: 1.37069 - 1.37150 at 20 degrees Celsius
HR2-783 is titrated to pH 6.5 using HCl
Measured Conductivity Range of HR2-783: 22.8 - 28.7 mS/cm at 25 degrees Celsius
Measured Refractive Index of HR2-783: 1.36817 - 1.36926 at 20 degrees Celsius
Al <0.0005%
Ca <0.0005%
Cl <0.05%
Cu <0.0005%
Fe <0.0005%
K <0.005%
Mg <0.0005%
NH4 <0.05%
Na <0.005%
Pb <0.001%
SO4 <0.05%
Zn <0.0005%