71501

Sodium pyrophosphate dibasic

BioUltra, ≥99.0% (T)

• Synonym(s): Disodium dihydrogen pyrophosphate, Sodium diphosphate dibasic
• Linear Formula: Na₂H₂P₂O₇
• CAS Number: 7758-16-9
• Molecular Weight: 221.94
• EC Number: 231-835-0
• MDL number: MFCD00014246
• UNSPSC Code: 12161700
• PubChem Substance ID: 57652309
• NACRES: NA.25

Properties

• product line: BioUltra
• Quality Level: 200
• Assay: ≥99.0% (T)
• form: powder
• impurities: insoluble matter, passes filter test
• loss: ≤0.5% loss on drying, 200 °C
• pH: 3.5-4.5 (20 °C, 0.1 M in H₂O, freshly prepared)
• solubility: H₂O: 0.1 M at 20 °C, clear, colorless
• anion traces: chloride (Cl^-): ≤50 mg/kg
• cation traces: Al: ≤5 mg/kg; As: ≤0.2 mg/kg; Ba: ≤5 mg/kg; Bi: ≤5 mg/kg; Ca: ≤50 mg/kg; Cd: ≤5 mg/kg; Co: ≤5 mg/kg; Cr: ≤5 mg/kg; Cu: ≤5 mg/kg; Fe: ≤10 mg/kg; K: ≤300 mg/kg; Li: ≤5 mg/kg; Mg: ≤5 mg/kg; Mn: ≤5 mg/kg; Mo: ≤5 mg/kg; Ni: ≤5 mg/kg; Pb: ≤5 mg/kg; Sr: ≤5 mg/kg; Zn: ≤5 mg/kg
• λ: 1 M in H₂O
• UV absorption: λ: 260 nm A_max: 0.11; λ: 280 nm A_max: 0.09
• SMILES string: [Na+].[Na+].OP([O-])(=O)OP(O)([O-])=O
• InChI: 1S/2Na.H4O7P2/c;;1-8(2,3)7-9(4,5)6/h;;(H2,1,2,3)(H2,4,5,6)/q2*+1;/p-2
• InChI key: GYQBBRRVRKFJRG-UHFFFAOYSA-L

Description

Application

Sodium pyrophosphate dibasic has been used:

• as a setting retardant[1]
• as a component of STOP-washing buffer for in gel kinase assay[2]
• as protease and phosphatase inhibitor in the preparation of western blot lysis buffer[3]

Safety Information

• Pictograms: GHS07
• Signal Word: Warning
• Hazard Statements: H319
• Precautionary Statements: P305 + P351 + P338
• Hazard Classifications: Eye Irrit. 2
• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves