Potassium peroxodisulfate
SIGMA/60489 - puriss. p.a., ACS reagent, ≥99.0% (RT)
Synonym: Potassium persulfate
CAS Number: 7727-21-1
Empirical Formula (Hill Notation): K2O8S2
Molecular Weight: 270.32
EC Number: 231-781-8
MDL Number: MFCD00011386
Linear Formula: K2S2O8
Product Type: Chemical
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material.
This image depicts SKU: 60489-250G-F
This image depicts SKU: 60489-250G-F
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material.
This image depicts SKU: 60489-1KG-F
This image depicts SKU: 60489-1KG-F
| anion traces | chloride (Cl-): ≤10 mg/kg |
| application(s) | forensics and toxicology |
| assay | ≥99.0% (RT) |
| cation traces | Ag: ≤5 mg/kg |
| Al: ≤5 mg/kg | |
| Ba: ≤5 mg/kg | |
| Bi: ≤5 mg/kg | |
| Ca: ≤50 mg/kg | |
| Cd: ≤5 mg/kg | |
| Co: ≤5 mg/kg | |
| Cr: ≤5 mg/kg | |
| Cu: ≤5 mg/kg | |
| Fe: ≤5 mg/kg | |
| Li: ≤5 mg/kg | |
| Mg: ≤100 mg/kg | |
| Mn: ≤1 mg/kg | |
| Mo: ≤5 mg/kg | |
| Na: ≤200 mg/kg | |
| Ni: ≤5 mg/kg | |
| Pb: ≤5 mg/kg | |
| Sr: ≤5 mg/kg | |
| Tl: ≤5 mg/kg | |
| Zn: ≤5 mg/kg | |
| form | powder or crystals |
| grade | ACS reagent |
| puriss. p.a. | |
| impurities | ≤0.001% total nitrogen (N) |
| InChI | 1S/2K.H2O8S2/c;;1-9(2,3)7 |
| InChI key | USHAGKDGDHPEEY-UHFFFAOYSA |
| pH | 2.5-4.5 (25 °C, 27 g/L) |
| Quality Level | 200  |
| SMILES string | [K+].[K+].[O-]S(=O)(=O)OO |
| solubility | water: soluble (52.77 g/l soluble (68 °F / 20 °C) pH: 3.8) |
| Application: | Potassium peroxodisulfate can be used as: • A polymerization initiator in the synthesis of polyacrylamide via radical polymerization of acrylamide. • An oxidizing agent in the photochemical oxidation of atrazine aqueous solution. K2S2O8 can also be used in the following process: • K2S2O8-AgSCF3 catalytic system is used in the direct trifluoromethylthiolation of unactivated C(sp3)-H bonds under mild conditions. Usage of K2S2O8 in this process plays an important role in the activation of the C-H bond and the oxidation of AgSCF3. • K2S2O8-FeCl3 is used for the thiocyanation of 2H-indazoles using ammonium thiocyanate as a thiocyanating agent. |
| General description: | Potassium peroxodisulfate is also known as potassium persulfate (K2S2O8). It is commonly used as an oxidizing agent and polymerization initiator in organic synthesis. |
| Other Notes: | Oxidizing agent for decomposition by fusion |
| Symbol |    GHS03,GHS07,GHS08 |
| Signal word | Danger |
| Hazard statements | H272 - H302 - H315 - H317 - H319 - H334 - H335 |
| Precautionary statements | P210 - P280 - P301 + P312 - P302 + P352 - P304 + P340 + P312 - P305 + P351 + P338 |
| Hazard Codes | O,Xn |
| Risk Statements | 8-22-36/37/38-42/43 |
| Safety Statements | 22-24-26-37 |
| RIDADR | UN 1492 5.1 / PGIII |
| WGK Germany | WGK 1 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Purity | ≥99.0% (RT) |
| UNSPSC | 12352302 |