Sodium phosphate dibasic
SIAL/S7907 - BioXtra, ≥99.0%
Synonym: sec-Sodium phosphate; Disodium hydrogen phosphate; Disodium phosphate; Sodium hydrogenphosphate
CAS Number: 7558-79-4
Empirical Formula (Hill Notation): HNa2O4P
Molecular Weight: 141.96
EC Number: 231-448-7
MDL Number: MFCD00003496
Linear Formula: Na2HPO4
Product Type: Chemical
absorption | <0.05 at 260 in H2O at 1 M |
<0.05 at 280 in H2O at 1 M | |
anion traces | chloride (Cl-): ≤0.05% |
sulfate (SO42-): ≤0.05% | |
assay | ≥99.0% |
cation traces | Al: ≤0.0005% |
Ca: ≤0.002% | |
Cu: ≤0.0005% | |
Fe: ≤0.002% | |
K: ≤0.005% | |
Mg: ≤0.005% | |
NH4+: ≤0.05% | |
Pb: ≤0.001% | |
Zn: ≤0.0005% | |
form | powder or crystals |
impurities | ≤0.1% Insoluble matter |
InChI | 1S/2Na.H3O4P/c;;1-5(2,3)4 |
InChI key | BNIILDVGGAEEIG-UHFFFAOYSA |
pH | 8.0-11.0 (20 °C, 1 M in H2O) |
pKa (25 °C) | (1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid) |
product line | BioXtra |
Quality Level | 200 ![]() |
SMILES string | [Na+].[Na+].[H]OP([O-])([ |
solubility | H2O: 1 M at 20 °C, clear, colorless |
Packaging: | 1 kg in poly bottle |
Packaging: | 100, 500 g in poly bottle |
Packaging: | 5 kg in poly drum |
RIDADR | UN 3077 9 / PGIII |
WGK Germany | WGK 1 |
Flash Point(F) | Not applicable |
Flash Point(C) | Not applicable |
Purity | ≥99.0% |
UNSPSC | 12161700 |