71911

Sodium phosphate tribasic dodecahydrate

puriss. p.a., ACS reagent, ≥98.0% (T)

• Synonym(s): TSP, Trisodium phosphate (tert) dodecahydrate, Trisodium phosphate dodecahydrate
• Linear Formula: Na₃PO₄ · 12H₂O
• CAS Number: 10101-89-0
• Molecular Weight: 380.12
• EC Number: 231-509-8
• MDL number: MFCD00149198
• UNSPSC Code: 12352302
• PubChem Substance ID: 329763628
• NACRES: NB.24

Properties

• grade: ACS reagent; puriss. p.a.
• Assay: ≥98.0% (T)
• form: crystals or chunks
• impurities: ≤0.001% total nitrogen (N); ≤2.5% free alkali (as NaOH)
• pH: 13 (25 °C, 190.1 g/L)
• density: 1.62 g/mL at 25 °C
• anion traces: chloride (Cl^-): ≤10 mg/kg; sulfate (SO₄^2-): ≤50 mg/kg
• 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
• SMILES string: O.O.O.O.O.O.O.O.O.O.O.O.[Na+].[Na+].[Na+].[O-]P([O-])([O-])=O
• InChI: 1S/3Na.H3O4P.12H2O/c;;;1-5(2,3)4;;;;;;;;;;;;/h;;;(H3,1,2,3,4);12*1H2/q3*+1;;;;;;;;;;;;;/p-3
• InChI key: ASTWEMOBIXQPPV-UHFFFAOYSA-K

Description

General description

Sodium phosphate tribasic dodecahydrate is a hydrated trisodium salt of phosphoric acid. It is widely used in various water treatment methods.

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.

Safety Information

• Pictograms: GHS07
• Signal Word: Warning
• Hazard Statements: H315,H319,H335
• Precautionary Statements: P261 - P264 - P271 - P280 - P302 + P352 - P305 + P351 + P338
• Hazard Classifications: Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3
• Target Organs: Respiratory system
• Storage Class Code: 8A - Combustible corrosive hazardous materials
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable