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71650 Sigma-Aldrich

Sodium phosphate dibasic dodecahydrate

puriss. p.a., crystallized, ≥99.0% (T)

Synonym: sec-Sodium phosphate, Disodium hydrogen phosphate dodecahydrate, Disodium phosphate, di-Sodium hydrogen phosphate dodecahydrate

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Properties

Related Categories Analytical Reagents, Analytical Reagents for General Use, Analytical/Chromatography, Essential Chemicals, Puriss p.a.,
InChI Key   DGLRDKLJZLEJCY-UHFFFAOYSA-L
Quality Level   200
grade   puriss. p.a.
assay   ≥99.0% (T)
quality   crystallized
pH   9.0-9.3 (25 °C, 50 mg/mL in H2O)
solubility   water: soluble 35.8 g/L at 20 °C
anion traces   chloride (Cl-): ≤5 mg/kg
  fluoride (F-): ≤5 mg/kg
  sulfate (SO42-): ≤50 mg/kg
cation traces   As: ≤0.5 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

Description

General description

Sodium phosphate is a colorless crystalline sodium salt. It is widely used as a buffer in molecular biology, biochemistry, and chromatographic studies. It exists in three forms: monobasic (NaH2PO4), dibasic (Na2HPO4), and tribasic (Na3PO4). Monobasic and dibasic forms in varying ratios are commonly used to compose the neutral sodium phosphate buffer solution.

Application

Sodium phosphate dibasic dodecahydrate may be used to prepare the 0.1M phosphate buffer having pH 7.4.

Packaging

1 kg in poly bottle

Safety & Documentation

Safety Information

WGK Germany 
1
RTECS 
TC5725000

Documents

Certificate of Analysis (COA)

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Single- & multi-channel pipettes from BRAND
Protocols & Articles
Peer-Reviewed Papers
15

References

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