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Sigma-Aldrich 71636 Sodium phosphate dibasic BioUltra, for molecular biology, ≥99.5% (T) 250 gr
Brand
Stock Code
LB.SA.71636-250G
| Sigma-Aldrich 71636 Sodium phosphate dibasic BioUltra, for molecular biology, ≥99.5% (T) 250 gr |
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Synonym(s): sec-Sodium phosphate, Disodium hydrogen phosphate, Disodium phosphate, Sodium hydrogenphosphate
Linear Formula: Na2HPO4
CAS Number: 7558-79-4
Molecular Weight: 141.96
EC Number: 231-448-7
MDL number: MFCD00003496
eCl@ss: 38070211
PubChem Substance ID: 57652328
NACRES: NA.25
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PROPERTIES
grade for molecular biology
Quality Level 200
product line BioUltra
assay ≥99.5% (T)
form coarse powder fine crystals powder
impurities
DNases, none detected
RNases, none detected
insoluble matter, passes filter test
phosphatases, none detected
proteases, none detected
≤0.001% total nitrogen (N)
loss ≤0.1% loss on drying, 110 °C
pH 8.8-9.4 (25 °C, 0.5 M in H2O)
pKa (25 °C) (1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid)
solubility H2O: 0.5 M at 20 °C, clear, colorless
anion traces
chloride (Cl-): ≤10 mg/kg
sulfate (SO42-): ≤50 mg/kg
cation traces
Al: ≤5 mg/kg
As: ≤0.2 mg/kg
Ba: ≤5 mg/kg
Bi: ≤5 mg/kg
Ca: ≤10 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤5 mg/kg
K: ≤50 mg/kg
Li: ≤5 mg/kg
Mg: ≤5 mg/kg
Mn: ≤5 mg/kg
Mo: ≤5 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Sr: ≤10 mg/kg
Zn: ≤5 mg/kg
λ 0.5 M in H2O
UV absorption
λ: 260 nm Amax: ≤0.025
λ: 280 nm Amax: ≤0.020
SMILES string [Na+].[Na+].[H]OP([O-])([O-])=O
InChI 1S/2Na.H3O4P/c;;1-5(2,3)4/h;;(H3,1,2,3,4)/q2*+1;/p-2
InChI key BNIILDVGGAEEIG-UHFFFAOYSA-L |