60489

Potassium peroxodisulfate

puriss. p.a., ACS reagent, ≥99.0% (RT)

• Synonyme(s) : Potassium persulfate
• Formule linéaire : K₂S₂O₈
• Numéro CAS: 7727-21-1
• Poids moléculaire : 270.32
• NACRES: NA.21
• PubChem Substance ID: 329759024
• UNSPSC Code: 12352302
• EC Number: 231-781-8
• MDL number: MFCD00011386
• Assay: ≥99.0% (RT)
• Form: powder or crystals
• Solubility: water: soluble (52.77 g/l soluble (68 °F / 20 °C) pH: 3.8)

Propriétés

• Quality Segment: 200
• grade: ACS reagent, puriss. p.a.
• assay: ≥99.0% (RT)
• form: powder or crystals
• impurities: ≤0.001% total nitrogen (N)
• pH: 2.5-4.5 (25 °C, 27 g/L)
• solubility: water: soluble (52.77 g/l soluble (68 °F / 20 °C) pH: 3.8)
• anion traces: chloride (Cl^-): ≤10 mg/kg
• 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
• application(s): forensics and toxicology
• SMILES string: [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O
• InChI: 1S/2K.H2O8S2/c;;1-9(2,3)7-8-10(4,5)6/h;;(H,1,2,3)(H,4,5,6)/q2*+1;/p-2
• InChI key: USHAGKDGDHPEEY-UHFFFAOYSA-L

Description

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.

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.

Other Notes

Oxidizing agent for decomposition by fusion

Informations sur la sécurité

• pictograms: GHS03,GHS08,GHS07
• signalword: Danger
• hcodes: H272,H302,H315,H317,H319,H334,H335
• pcodes: P210 - P220 - P280 - P301 + P312 - P302 + P352 - P305 + P351 + P338
• Hazard Classifications: Acute Tox. 4 Oral - Eye Irrit. 2 - Ox. Sol. 3 - Resp. Sens. 1 - Skin Irrit. 2 - Skin Sens. 1 - STOT SE 3
• target_organs: Respiratory system
• Classe de stockage: 5.1B - Oxidizing hazardous materials
• wgk: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges