Phosphate de sodium dibasic

Nom du produit

Phosphate de sodium dibasic, BioUltra, Molecular Biology, ≥99.5% (T)

InChI key

BNIILDVGGAEEIG-UHFFFAOYSA-L

InChI

1S/2Na.H3O4P/c;;1-5(2,3)4/h;;(H3,1,2,3,4)/q2*+1;/p-2

SMILES string

[Na+].[Na+].[H]OP([O-])([O-])=O

grade

Molecular Biology

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 (SO₄^2-): ≤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 A_max: ≤0.025
λ: 280 nm A_max: ≤0.020

Quality Level

200