Sodium phosphate dibasic dodecahydrate
SIGALD/71650 - puriss. p.a., crystallized, ≥99.0% (T)
Synonym: sec-Sodium phosphate; Disodium hydrogen phosphate dodecahydrate; Disodium phosphate; di-Sodium hydrogen phosphate dodecahydrate
CAS Number: 10039-32-4
Empirical Formula (Hill Notation): HNa2O4P · 12H2O
Molecular Weight: 358.14
EC Number: 231-448-7
MDL Number: MFCD00149181
Linear Formula: Na2HPO4 · 12H2O
Product Type: Chemical
| anion traces | chloride (Cl-): ≤5 mg/kg |
| fluoride (F-): ≤5 mg/kg | |
| sulfate (SO42-): ≤50 mg/kg | |
| assay | ≥99.0% (T) |
| cation traces | As: ≤0.5 mg/kg |
| Ca: ≤10 mg/kg | |
| Cd: ≤5 mg/kg | |
| Co: ≤5 mg/kg | |
| Cr: ≤5 mg/kg | |
| Cu: ≤5 mg/kg | |
| Fe: ≤5 mg/kg | |
| K: ≤50 mg/kg | |
| Mg: ≤5 mg/kg | |
| Mn: ≤5 mg/kg | |
| Ni: ≤5 mg/kg | |
| Pb: ≤5 mg/kg | |
| Zn: ≤5 mg/kg | |
| form | crystals |
| grade | puriss. p.a. |
| InChI | 1S/2Na.H3O4P.12H2O/c;;1-5 |
| InChI key | DGLRDKLJZLEJCY-UHFFFAOYSA |
| pH | 9.0-9.3 (25 °C, 50 mg/mL in H2O) |
| quality | crystallized |
| Quality Level | 200  |
| SMILES string | O.O.O.O.O.O.O.O.O.O.O.O.[ |
| solubility | water: soluble 35.8 g/L at 20 °C |
| Application: | Sodium phosphate dibasic dodecahydrate may be used to prepare the 0.1M phosphate buffer having pH 7.4. |
| General description: | Sodium phosphate is a colorless crystalline sodium salt. It is widely used as a buffer in molecular biology, biochemistry, and chromatographic studies. It exists in three forms: monobasic (NaH2PO4), dibasic (Na2HPO4), and tribasic (Na3PO4). Monobasic and dibasic forms in varying ratios are commonly used to compose the neutral sodium phosphate buffer solution. |
| Packaging: | 1 kg in poly bottle |
| WGK Germany | WGK 1 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Purity | ≥99.0% (T) |
| UNSPSC | 12161700 |