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60219 Sigma-Aldrich

Potassium phosphate monobasic

BioUltra, anhydrous, ≥99.5% (T)

Synonym: Monopotassium phosphate, Potassium dihydrogen phosphate, prim.-Potassium phosphate

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Properties

InChI Key   GNSKLFRGEWLPPA-UHFFFAOYSA-M
product line   BioUltra
assay   ≥99.5% (T)
impurities   insoluble matter, passes filter test
  ≤0.001% total nitrogen (N)
pH   4.0-4.5 (25 °C, 1 M in H2O)
pKa (25 °C)   (1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid)
mp   252.6 °C(lit.)
solubility   H2O: 1 M at 20 °C, clear, colorless
density   2.338 g/mL at 25 °C(lit.)
anion traces   chloride (Cl-): ≤5 mg/kg
  sulfate (SO42-): ≤30 mg/kg
cation traces   Al: ≤5 mg/kg
  As: ≤0.1 mg/kg
  Ba: ≤5 mg/kg
  Bi: ≤5 mg/kg
  Ca: ≤10 mg/kg
  Cd: ≤5 mg/kg
  Co: ≤5 mg/kg
  Cr: ≤5 mg/kg
  Cu: ≤5 mg/kg
  Fe: ≤10 mg/kg
  Li: ≤5 mg/kg
  Mg: ≤5 mg/kg
  Mn: ≤5 mg/kg
  Mo: ≤5 mg/kg
  Na: ≤200 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 Amax: 0.046
  λ: 280 nm Amax: 0.040

Description

Other Notes

Primary standard buffer; Buffer component of many culture media

This product has been replaced by 60218-SIGMA | Potassium phosphate monobasic BioUltra, for molecular biology, anhydrous, ≥99.5% (T)

Safety & Documentation

Safety Information

RIDADR 
NONH for all modes of transport
WGK Germany 
1
RTECS 
TC6615500

Documents

Certificate of Analysis

Protocols & Articles

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Peer-Reviewed Papers
15

References

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