Sodium phosphate tribasic dodecahydrate
SIGALD/71911 - puriss. p.a., ACS reagent, ≥98.0% (T)
Synonym: TSP; Trisodium phosphate (tert) dodecahydrate; Trisodium phosphate dodecahydrate
CAS Number: 10101-89-0
Empirical Formula (Hill Notation): Na3O4P · 12H2O
Molecular Weight: 380.12
EC Number: 231-509-8
MDL Number: MFCD00149198
Linear Formula: Na3PO4 · 12H2O
Product Type: Chemical
| anion traces | chloride (Cl-): ≤10 mg/kg |
| sulfate (SO42-): ≤50 mg/kg | |
| assay | ≥98.0% (T) |
| cation traces | As: ≤1 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 | |
| density | 1.62 g/mL at 25 °C |
| form | crystals or chunks |
| grade | ACS reagent |
| puriss. p.a. | |
| impurities | ≤0.001% total nitrogen (N) |
| ≤2.5% free alkali (as NaOH) | |
| InChI | 1S/3Na.H3O4P.12H2O/c;;;1- |
| InChI key | ASTWEMOBIXQPPV-UHFFFAOYSA |
| pH | 13 (25 °C, 190.1 g/L) |
| Quality Level | 200  |
| SMILES string | O.O.O.O.O.O.O.O.O.O.O.O.[ |
| Application: | Sodium phosphate tribasic dodecahydrate (SP tribasic dodecahydrate) may be used to compose buffer solutions (pH in the range of 2 to 12) for use in a study. It may be used to prepare 500mM SP (sodium phosphate) buffer solutions for use in cloud point (CP) experiments. |
| General description: | Sodium phosphate tribasic dodecahydrate is a hydrated trisodium salt of phosphoric acid. It is widely used in various water treatment methods. |
| Symbol |  GHS07 |
| Signal word | Warning |
| Hazard statements | H315 - H319 - H335 |
| Precautionary statements | P302 + P352 - P305 + P351 + P338 |
| Hazard Codes | C |
| Risk Statements | 34 |
| Safety Statements | 26-36/37/39-45 |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 1 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Purity | ≥98.0% (T) |
| Density | 1.62 g/mL at 25 °C |
| UNSPSC | 12352300 |