Sodium phosphate monobasic dihydrate
SIGALD/04269 - 98-100.5% (calc. to the dried substance), meets analytical specification of Ph. Eur., BP, USP, FCC, E 339
Synonym: Sodium dihydrogen phosphate dihydrate
CAS Number: 13472-35-0
Empirical Formula (Hill Notation): H2NaO4P · 2H2O
Molecular Weight: 156.01
EC Number: 231-449-2
MDL Number: MFCD00149209
Linear Formula: NaH2PO4 · 2H2O
Product Type: Chemical
| anion traces | chloride (Cl-): ≤50 mg/kg |
| fluoride (F-): ≤10 mg/kg | |
| sulfate (SO42-): ≤200 mg/kg | |
| assay | 98-100.5% (calc. to the dried substance) |
| 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 | |
| form | powder or crystals |
| impurities | heavy metals (as Pb), complies |
| organic volatile impurities, complies | |
| reducing matter, complies | |
| related substances, complies | |
| residual solvents, complies | |
| ≤0.2% water-insoluble matter | |
| InChI | 1S/Na.H3O4P.2H2O/c;1-5(2, |
| InChI key | VBJGJHBYWREJQD-UHFFFAOYSA |
| 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%) | |
| quality | meets analytical specification of Ph. Eur., BP, USP, FCC, E 339 |
| Quality Level | 200  |
| SMILES string | O.O.[Na+].OP(O)([O-])=O |
| suitability | complies for appearance of solution |