80639
POPSO dihydrate
≥97.0% (T)
Synonym(s):
Piperazine-1,4-bis(2-hydroxypropanesulfonic acid) dihydrate
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About This Item
Empirical Formula (Hill Notation):
C10H22N2O8S2 · 2H2O
CAS Number:
Molecular Weight:
398.45
UNSPSC Code:
12161700
EC Number:
269-199-1
Beilstein/REAXYS Number:
842252
assay
≥97.0% (T)
pKa (20 °C)
7.85
solubility
0.1 M NaOH: 0.1 M at 20 °C, clear
anion traces
chloride (Cl-): ≤2000 mg/kg, sulfate (SO42-): ≤500 mg/kg
cation traces
Ca: ≤50 mg/kg, Cd: ≤50 mg/kg, Co: ≤50 mg/kg, Cu: ≤50 mg/kg, Fe: ≤50 mg/kg, K: ≤100 mg/kg, Na: ≤1000 mg/kg, Ni: ≤50 mg/kg, Pb: ≤50 mg/kg, Zn: ≤50 mg/kg
Other Notes
New zwitterionic hydrogen buffer for biological research
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Hydrogen ion buffers for biological research.
W J Ferguson et al.
Analytical biochemistry, 104(2), 300-310 (1980-05-15)