Sodium pyrophosphate dibasic

• Catalog No.: 71501
• CAS Number: 7758-16-9
• M. F.: H2Na2O7P2
• M. W.: 221.938742
• Purity: ≥99.0% (T)

SYNONYMS

• Title: 焦磷酸钠 二元
• IUPAC name: disodium hydrogen (hydrogen phosphonatooxy)phosphonate
• IUPAC Traditional name: disodium pyrophosphate 2-
• Synonyms: 焦磷酸二氢二钠; Disodium Dihydrogen Pyrophosphate; 二磷酸钠 二元; Sodium diphosphate dibasic

DATABASE IDS

• EC Number: 231-835-0
• MDL Number: MFCD00014246
• PubChem SID: 24886207
• CAS Number: 7758-16-9

PROPERTIES

• Antion Traces: chloride (Cl-): ≤50 mg/kg
• Cation Traces: Al: ≤5 mg/kg
• Cation Traces: As: ≤0.2 mg/kg
• Cation Traces: Ba: ≤5 mg/kg
• Cation Traces: Bi: ≤5 mg/kg
• Cation Traces: Ca: ≤50 mg/kg
• Cation Traces: Cd: ≤5 mg/kg
• Cation Traces: Co: ≤5 mg/kg
• Cation Traces: Cr: ≤5 mg/kg
• Cation Traces: Cu: ≤5 mg/kg
• Cation Traces: Fe: ≤10 mg/kg
• Cation Traces: K: ≤300 mg/kg
• Cation Traces: Li: ≤5 mg/kg
• Cation Traces: Mg: ≤5 mg/kg
• Cation Traces: Mn: ≤5 mg/kg
• Cation Traces: Mo: ≤5 mg/kg
• Cation Traces: Ni: ≤5 mg/kg
• Cation Traces: Pb: ≤5 mg/kg
• Cation Traces: Sr: ≤5 mg/kg
• Cation Traces: Zn: ≤5 mg/kg
• Impurities: insoluble matter, passes filter test
• λ: 1 M in H2O
• Linear Formula: Na2H2P2O7
• Loss on Drying: ≤0.5% loss on drying, 200 °C
• Product Line: BioUltra
• Purity: ≥99.0% (T)
• Absorption Wavelength: λ: 260 nm Amax: 0.11
• Absorption Wavelength: λ: 280 nm Amax: 0.09
• pH: 3.5-4.5 (20 °C, 0.1 M in H2O, freshly prepared)
• Solubility: H2O: soluble0.1 M at 20 °C, clear, colorless
• Personal Protective Equipment: Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter
• RTECS: UX6475000
• German water hazard class: 2