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CAS RN: 37222-66-5 | Product Number: O0310

Potassium Peroxymonosulfate [> ca. 45%(T) as KHSO5]

  • Oxone® [> ca. 45%(T) as KHSO5]
2   ≥20 
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Product Number O0310
Molecular Formula / Molecular Weight 2KHSO__5·KHSO__4·K__2SO__4 = 614.74  
Physical State (20 deg.C) Solid
Store Under Inert Gas Store under inert gas
Condition to Avoid Hygroscopic
CAS RN 37222-66-5
Related CAS RN 70693-62-8
Reaxys Registry Number 13178559
PubChem Substance ID 87558561
Appearance White to Almost white powder to crystal
Purity(Iodometric Titration) 42.0 to 48.0 %(as KHSO5)
Properties (reference)
Solubility in water Soluble
Pictogram Pictogram Pictogram
Signal Word Danger
Hazard Statements H302 : Harmful if swallowed.
H314 : Causes severe skin burns and eye damage.
H290 : May be corrosive to metals.
Precautionary Statements P501 : Dispose of contents/ container to an approved waste disposal plant.
P260 : Do not breathe dusts or mists.
P270 : Do not eat, drink or smoke when using this product.
P234 : Keep only in original container.
P264 : Wash skin thoroughly after handling.
P280 : Wear protective gloves/ protective clothing/ eye protection/ face protection.
P390 : Absorb spillage to prevent material damage.
P303 + P361 + P353 : IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water/shower.
P301 + P330 + P331 : IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.
P363 : Wash contaminated clothing before reuse.
P301 + P312 + P330 : IF SWALLOWED: Call a POISON CENTER/doctor if you feel unwell. Rinse mouth.
P304 + P340 + P310 : IF INHALED: Remove person to fresh air and keep comfortable for breathing. Immediately call a POISON CENTER/doctor.
P305 + P351 + P338 + P310 : IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER/doctor.
P406 : Store in corrosive resistant container with a resistant inner liner.
P405 : Store locked up.
Related Laws:
Transport Information:
UN Number UN3260
Class 8
Packing Group II
TCI Practical Example: Oxidation Using Potassium Peroxymonosulfate


Used Chemicals


To a solution of compound 1 (0.10 g, 0.34 mmol) in methanol (3.0 mL) was added potassium peroxymonosulfate (3.9 g, 6.3 mmol) at ambient temperature and stirred at 60 °C for 40 hours. The mixture was added water (30 mL) and extracted with ethyl acetate (30 mL x 3). The organic phase was dried over sodium sulfate and filtered. The solvent was removed under reduced pressure and the residue was purified by column chromatography (ethyl acetate:hexane = 1:19 on silica gel) to give compound 2 as a white solid.

Experimenter’s Comments

The reaction mixture was monitored by UPLC
Since the reaction mixture turns to acidic, there is a possibility of decomposition when applied to acid-unstable compounds.

Analytical Data

compound 2

1H NMR (400 MHz, CDCl3); δ 7.74-7.54 (m, 5H), 7.38-7.16 (m, 5H), 3.75-3.66 (m, 2H), 2.84 (t, J = 7.3 Hz, 2H), 2.38-2.24 (m, 2H).

Lead Reference

PubMed Literature

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