Potassium persulfate , Total nitrogen n ≤ 0.0005%, suitable for HJ636-2012 , 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 |
| 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. |
| InChIKey | USHAGKDGDHPEEY-UHFFFAOYSA-L |
| 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 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.
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 |
| 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 | Yes |
| HS Code | 2833 40 00 |
| HazardClass | 5.1 |
| PackingGroup | III |
| Hazardous Substances Data | 7727-21-1(Hazardous Substances Data) |
| Toxicity | LD50 orally in Rabbit: 802 mg/kg |
