1.06586
Sodium phosphate dibasic
anhydrous for analysis EMSURE® ACS,Reag. Ph Eur
Synonym(s):
Sodium phosphate dibasic, di-Sodium hydrogen phosphate, sec-Sodium phosphate, Disodium hydrogen phosphate, Disodium phosphate, Sodium hydrogenphosphate
About This Item
grade
ACS reagent
Quality Level
Agency
reag. Ph. Eur.
product line
EMSURE®
Assay
≥99.0% (alkalimetric)
form
solid
potency
>2000 mg/kg LD50, oral (Rat)
impurities
≤0.01% Insoluble matter
loss
≤ 0.2% loss on drying, 105 °C
pH
8.7-9.3 (20 °C, 10 g/L in H2O)
pKa (25 °C)
(1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid)
mp
250 °C (decomposition)
bulk density
880 kg/m3
anion traces
chloride (Cl-): ≤0.002%
sulfate (SO42-): ≤0.005%
cation traces
Cu: ≤0.0003%
Fe: ≤0.001%
K: ≤0.01%
Pb: ≤0.001%
heavy metals: ≤0.001%
storage temp.
2-30°C
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
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Analysis Note
Insoluble matter: ≤ 0.01 %
pH-value (5 %; water, 25 °C): 8.7 - 9.3
Chloride (Cl): ≤ 0.002 %
Sulfate (SO₄): ≤ 0.005 %
Heavy metals (ACS): ≤ 0.001 %
Cu (Copper): ≤ 0.0003 %
Fe (Iron): ≤ 0.001 %
K (Potassium): ≤ 0.01 %
Pb (Lead): ≤ 0.001 %
Loss on Drying (105 °C): ≤ 0.2 %
Corresponds to ACS, Reag. Ph Eur
Legal Information
WGK
WGK 1
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Certificates of Analysis (COA)
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