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60153 Sigma-Aldrich

Potassium citrate tribasic monohydrate

purum p.a., ≥99.0% (NT)

Synonym: Citric acid tripotassium salt, Tripotassium citrate

  • CAS Number 6100-05-6

  • Linear Formula HOC(COOK)(CH2COOK)2 · H2O

  • Molecular Weight 324.41

  •  Beilstein/REAXYS Number 3924344

  •  EC Number 231-905-0

  •  MDL number MFCD00150442

  •  PubChem Substance ID 57651729

  •  NACRES NA.21

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Properties

Related Categories Biochemicals and Reagents, Biological Buffers, Buffers A to Z, Essential Chemicals, Potassium Salts,
Quality Level   200
grade   purum p.a.
assay   ≥99.0% (NT)
pH   7.5-9.0 (25 °C, 50 mg/mL in H2O)
mp   275 °C (dec.) (lit.)
solubility   H2O: 0.5 g/10 mL, clear, colorless
anion traces   chloride (Cl-): ≤50 mg/kg
  sulfate (SO42-): ≤50 mg/kg
cation traces   Ca: ≤50 mg/kg
  Cd: ≤50 mg/kg
  Co: ≤50 mg/kg
  Cu: ≤50 mg/kg
  Fe: ≤50 mg/kg
  Na: ≤1500 mg/kg
  Ni: ≤50 mg/kg
  Pb: ≤50 mg/kg
  Zn: ≤50 mg/kg
SMILES string   O.[K+].[K+].[K+].OC(CC([O-])=O)(CC([O-])=O)C([O-])=O
InChI   1S/C6H8O7.3K.H2O/c7-3(8)1-6(13,5(11)12)2-4(9)10;;;;/h13H,1-2H2,(H,7,8)(H,9,10)(H,11,12);;;;1H2/q;3*+1;/p-3
InChI key   PJAHUDTUZRZBKM-UHFFFAOYSA-K

Description

General description

Potassium citrate tribasic monohydrate is the tripotassium salt of citric acid. It has been proposed as a promising organic salt for the formation of aqueous two-phase system (ATPS). UCON (temperature-responsive polymer) + potassium citrate ATPS has been studied.

Application

Potassium citrate tribasic monohydrate (tribasic potassium citrate) may be added as a promoter during the preparation of activated carbon-supported CuCl2 + PdCl2 + NaOH catalyst. This catalyst was employed for the conversion of ethanol to diethyl carbonate (DEC).1 It may be used to compose the fermentation medium for Aspergillus niger 72-4. It may be used as a standard to investigate the influence of Bergenia ligulata rhizome (BLR) on CaC2O4 crystallization.

Safety & Documentation

Safety Information

Personal Protective Equipment 
RIDADR 
NONH for all modes of transport
WGK Germany 
WGK 1
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable

Documents

Certificate of Analysis (COA)

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Protocols & Articles

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Peer-Reviewed Papers
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References

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