Sodium pyrophosphate dibasic
SIGMA/71501 - BioUltra, ≥99.0% (T)
Synonym: Disodium dihydrogen pyrophosphate; Sodium diphosphate dibasic
CAS Number: 7758-16-9
Empirical Formula (Hill Notation): H2Na2O7P2
Molecular Weight: 221.94
EC Number: 231-835-0
MDL Number: MFCD00014246
Linear Formula: Na2H2P2O7
Product Type: Chemical
λ | 1 M in H2O |
anion traces | chloride (Cl-): ≤50 mg/kg |
assay | ≥99.0% (T) |
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 | |
form | powder |
impurities | insoluble matter, passes filter test |
InChI | 1S/2Na.H4O7P2/c;;1-8(2,3) |
InChI key | GYQBBRRVRKFJRG-UHFFFAOYSA |
loss | ≤0.5% loss on drying, 200 °C |
pH | 3.5-4.5 (20 °C, 0.1 M in H2O, freshly prepared) |
product line | BioUltra |
Quality Level | 200 |
SMILES string | [Na+].[Na+].OP([O-])(=O)O |
solubility | H2O: 0.1 M at 20 °C, clear, colorless |
UV absorption | λ: 260 nm Amax: 0.11 |
λ: 280 nm Amax: 0.09 |
Application: | Sodium pyrophosphate dibasic has been used: • as a setting retardant • as a component of STOP-washing buffer for in gel kinase assay • as protease and phosphatase inhibitor in the preparation of western blot lysis buffer |
Symbol | GHS07 |
Signal word | Warning |
Hazard statements | H319 |
Precautionary statements | P305 + P351 + P338 |
Hazard Codes | Xi |
Risk Statements | 36 |
Safety Statements | 26 |
RIDADR | NONH for all modes of transport |
WGK Germany | WGK 1 |
Flash Point(F) | Not applicable |
Flash Point(C) | Not applicable |
Purity | ≥99.0% (T) |
UNSPSC | 12161700 |