1.06559
Sodium phosphate dibasic
anhydrous for analysis particle size about 0.2-1 mm (~18-80 mesh ASTM) EMSURE®
Synonym(s):
Sodium phosphate dibasic, di-Sodium hydrogen phosphate anhydrous, sec-Sodium phosphate, Disodium hydrogen phosphate, Disodium phosphate, Sodium hydrogenphosphate
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About This Item
grade
anhydrous
Quality Level
product line
EMSURE®
assay
≥99.0% (acidimetric)
form
solid
potency
>2000 mg/kg LD50, oral (Rat)
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)
solubility
77 g/L
bulk density
880 kg/m3
anion traces
chloride (Cl-): ≤0.002%, sulfate (SO42-): ≤0.005%
cation traces
Fe: ≤0.001%, K: ≤0.01%, N: ≤0.001%, heavy metals (as Pb): ≤0.001%
storage temp.
2-30°C
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
Analysis Note
pH-value (5 %; water): 8.9 - 9.2
Chloride (Cl): ≤ 0.002 %
Sulfate (SO₄): ≤ 0.005 %
Total nitrogen (N): ≤ 0.001 %
Heavy metals (as Pb): ≤ 0.001 %
Fe (Iron): ≤ 0.001 %
K (Potassium): ≤ 0.01 %
Particle size (0.2 - 1 mm): about 90 %
Loss on Drying (105 °C): ≤ 0.2 %
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Storage Class
13 - Non Combustible Solids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
Certificates of Analysis (COA)
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