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Potassium peroxymonosulfate

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Potassium peroxymonosulfate Basic information
Potassium peroxymonosulfate Chemical Properties
Safety Information
  • Hazard Codes O,C
  • Risk Statements 8-22-34-42/43-37-35
  • Safety Statements 22-26-36/37/39-45
  • RIDADR UN 3260 8/PG 2
  • WGK Germany 1
  • TSCA Yes
  • HS Code 2833 40 00
  • HazardClass 5.1
  • PackingGroup III
  • ToxicityLD50 orally in Rabbit: > 2000 mg/kg
Potassium peroxymonosulfate Usage And Synthesis
  • Reactions
    1. Reagent for the catalytic asymmetric Shi epoxidation
    2. Reagent for the synthesis of nitro heteroaromatics in water
    3. Reagent for the syntheses of benzoxazoles and benzothiazoles using aryl iodides via C-H functionalization and C-O/S bond formation
    4. Reagent used for bromolactonization in the asymmetric total synthesis of (+)-Dubiusamine C
    5. Reagent for the benzofuran oxidative dearomatization cascade in the total synthesis of Integrastatin B
  • Chemical Propertieswhite crystalline powder
  • UsesPCB metal surface treatment chemical and water treatment etc.
  • Purification MethodsThis is a stable form of Caro's acid and should contain >4.7% of active oxygen. It can be used in EtOH/H2O and EtOH/AcOH/H2O solutions. If active oxygen is too low. it is best to prepare it afresh from 1mole of KHSO5, 0.5mole of KHSO4 and 0.5mole of K2SO4. [Kennedy & Stock J Org Chem 25 1901 1960, Stephenson US Patent 2,802,722 1957.] A rapid preparation of Caro's acid is made by stirring finely powdered potassium persulfate (M 270.3) into ice-cold conc H2SO4 (7mL) and when homogeneous add ice (40-50g). It is stable for several days if kept cold. Keep away from organic matter as it is a STRONG OXIDANT. A detailed preparation of Caro's acid (hypersulfuric acid, H2SO5) in crystalline form m ~45o from H2O2 and chlorosulfonic acid was described by Fehér in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol I p 388 1963.
Potassium peroxymonosulfate Preparation Products And Raw materials
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