1.06342
Sodium dihydrogen phosphate dihydrate
for analysis EMSURE® Reag. Ph Eur
Synonym(s):
Sodium phosphate monobasic dihydrate, mono-Sodium orthophosphate, Sodium biphosphate, Sodium phosphate monobasic, Sodium dihydrogen phosphate dihydrate
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About This Item
agency
reag. Ph. Eur.
Quality Level
product line
EMSURE®
assay
99.0-100.5% dry basis (alkalimetric)
form
crystals
potency
8290 mg/kg LD50, oral (Rat), >7940 mg/kg LD50, skin (Rabbit)
impurities
≤0.15% In water insoluble matter (calculated on dried substance)
loss
21.5-24.0% loss on drying, 130 °C
pH
4.5 (25 °C, 12 g/L in H2O)
mp
60 °C
solubility
850 g/L
density
1.915 g/cm3 at 20 °C
bulk density
1000 kg/m3
anion traces
chloride (Cl-): ≤0.0005%, fluoride (F-): ≤0.001%, phosphate, phosphite (as H3PO4): ≤0.5%, sulfate (SO42-): ≤0.01%
cation traces
Al:, passes test (detectable with ammonia), As: ≤0.00005%, Ca: ≤0.005%, Ca:, passes test (detectable with ammonia), Cd: ≤0.0001%, Co: ≤0.005%, Cu: ≤0.005%, Fe: ≤0.001%, Hg: ≤0.0001%, K: ≤0.005%, Mg: ≤0.005%, N: ≤0.001%, Ni: ≤0.005%, Pb: ≤0.0004%, Zn: ≤0.025%, heavy metals (as Pb): ≤0.0005%
storage temp.
2-30°C
SMILES string
O.O.[Na+].OP(O)([O-])=O
InChI
1S/Na.H3O4P.2H2O/c;1-5(2,3)4;;/h;(H3,1,2,3,4);2*1H2/q+1;;;/p-1
InChI key
VBJGJHBYWREJQD-UHFFFAOYSA-M
Analysis Note
Appearance of solution: passes test
Assay (alkalimetric, calculated on dried substance): 99.0 - 100.5 %
In water insoluble matter (calculated on dried substance): ≤ 0.15 %
pH-value (1 %, water): 4.1 - 5.0
pH-value (5 %; water): 4.2 - 4.5
Chloride (Cl): ≤ 0.0005 %
Fluoride (F): ≤ 0.001 %
Total nitrogen (as N): ≤ 0.001 %
Hydrogenphosphate (HPO₄): ≤ 0.5 %
Sulfate (SO₄): ≤ 0.01 %
Heavy metals (as Pb): ≤ 0.0005 %
Al, Ca and other elements detectable with ammonia: passes test
As (Arsenic): ≤ 0.00005 %
Ca (Calcium): ≤ 0.005 %
Cd (Cadmium): ≤ 0.0001 %
Co (Cobalt): ≤ 0.005 %
Cu (Copper): ≤ 0.005 %
Fe (Iron): ≤ 0.001 %
Hg (Mercury): ≤ 0.0001 %
K (Potassium): ≤ 0.005 %
Mg (Magnesium): ≤ 0.005 %
Ni (Nickel): ≤ 0.005 %
Pb (Lead): ≤ 0.0004 %
Zn (Zinc): ≤ 0.025 %
Substances reducing potassium permanganate (as O): passes test
Loss on drying (130 °C): 21.5 - 24.0 %
Corresponds to Reag. Ph. Eur.
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Storage Class
13 - Non Combustible Solids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
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