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
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 |
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 | 12352300 |