Potassium persulfate #CAS7727-21-1
CAS Number:7727-21-1
Chemical Formula:K2O8S2
Synonyms:
POTASSIUM PERSULFATE
POTASSIUM PERSULFATE, PURIFIED
Potassium Perslphate
Appearance:
White Solid MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)
Potassium persulfate #CAS7727-21-1
Potassium persulfate (molecular formula K₂S₂O₈), also known as potassium persulfate, potassium perdisulfate, potassium disulfate, or potassium dithiooctaoxyate, has a molecular weight of 270.32 and a decomposition temperature of 50-60℃. It is a white, odorless crystalline solid, soluble in water but insoluble in ethanol. It possesses strong oxidizing properties and is commonly used as a bleaching agent, oxidizing agent, and polymerization initiator. It is virtually non-hygroscopic, exhibits good stability at room temperature, is easy to store, and offers advantages such as convenience and safety. Applications include polymerization initiator, circuit board cleaning and etching, copper and aluminum surface activation, starch modification, low-temperature bleaching and desizing of pulp and fabrics, circulating water system purification, oxidative degradation of harmful gases, acceleration of low-formaldehyde adhesive bonding, oxidation of ethanol and aromatic hydrocarbons, disinfectant, and hair dye decolorization.
Application of Potassium persulfate
Potassium persulfate is mainly used as initiator and strong oxidizing agents.
Initiator:
Potassium persulfate is the initiator of latex or solution polymerization of acrylic monomers, vinyl acetate, vinyl chloride and other product, and it is also the initiator of styrene, acrylonitrile, butadiene and the like emulsion for copolymerisation.
Strong oxidizing agent:
1. It is used as desizing agent and bleach activator.
2. It is used for oxidative degradation of harmful substances in pool and closed circular loop in water.
3. It can be applied in the production of starch modifier and applied in the production of adhesive and coating agent.
4. It can be applied in the branched-chain oxidation, alcohol and aromatic hydroxy oxidation.
5. It is one of the basic constituent of hair dyes, it plays the role of decolorization.
Potassium persulfateis a powerful oxidant, commonly used to initiate polymerizations. Potassium Persulphate used for bleaching and textile desizing, as an oxidizing agent and antiseptic, in purification of ammonium sulfate, and in the manufacture of soap and pharmaceuticals. It is also used as al laboratory oxidant and photography chemical. It is a food additive.
| Potassium persulfate Chemical Properties |
| Melting point | 1067 °C |
| Boiling point | 1689 °C |
| density | 2.47 |
| bulk density | 1150kg/m3 |
| vapor density | 9.3 (vs air) |
| vapor pressure | 0Pa at 25℃ |
| storage temp. | Store at +5°C to +30°C. |
| solubility | H2O: 0.5 M at 20 °C, clear, colorless |
| form | Solid |
| Specific Gravity | 2.477 |
| color | White |
| PH | 3.2 (50g/l, H2O, 20℃) |
| Odor | Odorless |
| PH Range | 2.5 - 4.5 |
| Water Solubility | 5 g/100 mL (20 ºC) |
| Merck | 14,7656 |
| Exposure limits | ACGIH: TWA 0.1 mg/m3 |
| Stability: | Stable. Strong oxidizer. Incompatible with strong reducing agents, organic materials, combustible materials. |
| Cosmetics Ingredients Functions | OXIDISING |
| 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 |
| InChIKey | USHAGKDGDHPEEY-UHFFFAOYSA-L |
| SMILES | [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O |
| LogP | -1 at 20℃ |
| CAS DataBase Reference | 7727-21-1(CAS DataBase Reference) |
| EPA Substance Registry System | Potassium persulfate (7727-21-1) |
| Safety Information |
| Hazard Codes | O,Xn |
| Risk Statements | 8-22-36/37/38-42/43 |
| Safety Statements | 22-24-26-37 |
| RIDADR | UN 1492 |
| WGK Germany | 1 |
| RTECS | TT5900000 |
| TSCA | TSCA listed |
| HS Code | 2833 40 00 |
| HazardClass | 5.1 |
| PackingGroup | III |
| Storage Class | 5.1B - Oxidizing hazardous materials |
| Hazard Classifications | Acute Tox. 4 Oral Eye Irrit. 2 Ox. Sol. 3 Resp. Sens. 1 Skin Irrit. 2 Skin Sens. 1 STOT SE 3 |
| Hazardous Substances Data | 7727-21-1(Hazardous Substances Data) |
| Toxicity | LD50 orally in Rabbit: 802 mg/kg |
