Potassium persulfate , ACS,≥99.0%(RT) , 7727-21-1
Synonym(s):
KPS;Potassium peroxodisulfate;Potassium persulfate
CAS NO.：7727-21-1
Empirical Formula: K2O8S2
Molecular Weight: 270.32
MDL number: MFCD03457781
EINECS: 231-781-8
PRODUCT 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 |
| Odor | Odorless |
| PH Range | 2.5 - 4.5 |
| PH | 3.2 (50g/l, H2O, 20℃) |
| 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) |
Description and Uses
Potassium persulfate, is composed of white crystals that are soluble in water, and it decomposes below 212°F (100°C). Potassium persulfate is a dangerous fire risk in contact with organic materials. It is a strong oxidizing agent and an irritant, with a four-digit UN identification number of 1492. The primary uses are in bleaching, as an oxidizing agent, as an antiseptic, as a polymerization promoter, and in the manufacture of pharmaceuticals.
Potassium persulfate is used to initiate the polymerization of styrene to form monodispersed, surfactant-free polystyrene spheres. Potassium persulfate is used as an oxidant to generate 2,2-azinobis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) radical cation to measure the antioxidant activities of natural compounds.
Safety
| Symbol(GHS) |    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 |
| target organs | Respiratory system |
| Hazard Codes | O,Xn |
| Risk Statements | 8-22-36/37/38-42/43 |
| Safety Statements | 22-24-26-37 |
| RIDADR | UN 1492 5.1/PG 3 |
| 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 |
| Limited Quantities | 5 L (1.3 gallons) (liquid) or 5.0 kg (11 lbs) (solid) |
| Excepted Quantities | Max Inner Pack (30g or 30ml) and Max Outer Pack (1Kg or 1L) |
