This product may be stored in room temperature in powder form.
04269
Sodium phosphate monobasic dihydrate
meets analytical specification of Ph. Eur., BP, USP, FCC, E 339, 98-100.5% (calc. to the dried substance)
Synonym(s):
Sodium dihydrogen phosphate dihydrate
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About This Item
Linear Formula:
NaH2PO4 · 2H2O
CAS Number:
Molecular Weight:
156.01
EC Number:
MDL number:
UNSPSC Code:
12161700
PubChem Substance ID:
NACRES:
NA.25
Assay:
98-100.5% (calc. to the dried substance)
Form:
powder or crystals
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Quality Level
Assay
98-100.5% (calc. to the dried substance)
form
powder or crystals
quality
meets analytical specification of Ph. Eur., BP, USP, FCC, E 339
impurities
heavy metals (as Pb), complies
organic volatile impurities, complies
reducing matter, complies
related substances, complies
residual solvents, complies
≤0.2% water-insoluble matter
loss
21.5-24.0% loss on drying, 130 °C
pH
4.1-5.0 (20 °C, 1%)
4.2-4.5 (20 °C, 5%)
anion traces
chloride (Cl-): ≤50 mg/kg
fluoride (F-): ≤10 mg/kg
sulfate (SO42-): ≤200 mg/kg
cation traces
Al:, in accordance
As: ≤1 mg/kg
Ca: ≤20 mg/kg
Ca:, in accordance
Cd: ≤1 mg/kg
Cu: ≤10 mg/kg
Fe: ≤5 mg/kg
Hg: ≤1 mg/kg
Mg: ≤20 mg/kg
Pb: ≤4 mg/kg
Zn: ≤10 mg/kg
suitability
complies for appearance of solution
SMILES string
O.O.[Na+].OP(O)([O-])=O
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
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This Item | 71500 | 1.47345 | 1.37018 |
|---|---|---|---|
| form powder or crystals | form crystals | form granular | form solid |
| assay 98-100.5% (calc. to the dried substance) | assay ≥99.0% (T) | assay - | assay - |
| Quality Level 200 | Quality Level 300 | Quality Level 500 | Quality Level 500 |
| pH 4.1-5.0 (20 °C, 1%), 4.2-4.5 (20 °C, 5%) | pH 4.0-4.5 (25 °C, 50 mg/mL in H2O) | pH - | pH 4.5 (25 °C, 12 g/L in H2O) |
| cation traces Al:, in accordance, Ca: ≤20 mg/kg, Cd: ≤1 mg/kg, Fe: ≤5 mg/kg, Mg: ≤20 mg/kg, Zn: ≤10 mg/kg, Ca:, in accordance, Hg: ≤1 mg/kg, Cu: ≤10 mg/kg | cation traces Ca: ≤50 mg/kg, Cd: ≤50 mg/kg, Co: ≤50 mg/kg, Cu: ≤50 mg/kg, Fe: ≤50 mg/kg, K: ≤100 mg/kg, Ni: ≤50 mg/kg, Pb: ≤50 mg/kg, Zn: ≤50 mg/kg | cation traces - | cation traces - |
| anion traces chloride (Cl-): ≤50 mg/kg, sulfate (SO42-): ≤200 mg/kg, fluoride (F-): ≤10 mg/kg | anion traces chloride (Cl-): ≤50 mg/kg, sulfate (SO42-): ≤50 mg/kg | anion traces - | anion traces - |
Application
Biochem/physiol Actions
Sodium phosphate monobasic also referred to as sodium dihydrogen phosphate is a chemical reagent possesses high buffering capacity and is used for preparing biological buffers. It was used as a phosphate supplement for determining whether phosphate supplementation can prevent rickets in very low birth weight infants with prenatal deficiency of phosphate.[3]
Storage Class Code
11 - Combustible Solids
WGK
WGK 1
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
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P C Holland et al.
Lancet (London, England), 335(8691), 697-701 (1990-03-24)
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