Peroxydisulfuric acid, disodium salt
Sodium persulfate
CAS: 7775-27-1;15593-29-0
Molecular Formula: Na2O8S2
Peroxydisulfuric acid, disodium salt - Names and Identifiers
| Name | Sodium persulfate |
| Synonyms | SODIUM PERSULFATE Sodium persulfate Sodium persulphate SODIUM PERSULPHATE SODIUM PEROXYDISULFATE SODIUM PEROXODISULFATE Sodium peroxydisulfate disodium peroxodisulfate disodium dioxidan-2-idesulfonate FREE SAMPLE NCV SODIUM PERSULFATE Peroxydisulfuric acid, disodium salt SODIUM PEROXIDISULFATE FOR ANALYSIS EMSURE Sodium Peroxodisulfate 〔Sodium Persulfate〕 disodium [(sulfonatoperoxy)sulfonyl]oxidanide Formaldehyde Activator Solution, for Purpald Method Peroxydisulfuric acid (((HO)S(O)2)2O2), disodium salt |
| CAS | 7775-27-1 15593-29-0 |
| EINECS | 231-892-1 |
| InChI | InChI=1/2Na.H2O5S/c;;1-5-6(2,3)4/h;;1H,(H,2,3,4)/q2*+1;/p-2 |
| InChIKey | CHQMHPLRPQMAMX-UHFFFAOYSA-L |
Peroxydisulfuric acid, disodium salt - Physico-chemical Properties
| Molecular Formula | Na2O8S2 |
| Molar Mass | 238.1 |
| Density | 2,4 g/cm3 |
| Melting Point | 100 °C |
| Water Solubility | 550 g/L (20 ºC) |
| Solubility | H2O: 1M at20°C, clear, colorless |
| Vapor Presure | 0Pa at 25℃ |
| Appearance | Solid |
| Specific Gravity | 2.4 |
| Color | White to yellow |
| Odor | Odorless |
| Exposure Limit | ACGIH: TWA 0.1 mg/m3 |
| Merck | 14,8656 |
| PH | 3.5-3.8 (100g/l, H2O, 20℃) |
| Storage Condition | Store at +15°C to +25°C. |
| Stability | Stability Unstable. Strong oxidizer. Contact with combustible material may cause fire. Incompatible with combustible material, strong reducing agents, strong bases, alcohols, aluminium, magnesium. |
| Physical and Chemical Properties | Properties: Na2S2O8 White Crystal or powder. Soluble in water. Decomposed by ethanol. When heated to a higher temperature, it decomposes, and oxygen is evolved into sodium pyrosulfate. Strong oxidation. |
| Use | Used in medicine, bleaching, batteries, and as chemical reagents |
Peroxydisulfuric acid, disodium salt - Risk and Safety
| Risk Codes | R8 - Contact with combustible material may cause fire R22 - Harmful if swallowed R42/43 - May cause sensitization by inhalation and skin contact. R36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S22 - Do not breathe dust. S36/37 - Wear suitable protective clothing and gloves. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S17 - Keep away from combustible material. |
| UN IDs | UN 1505 5.1/PG 3 |
| WGK Germany | 1 |
| RTECS | SE0525000 |
| TSCA | Yes |
| HS Code | 2833 40 00 |
| Hazard Class | 5.1 |
| Packing Group | III |
| Toxicity | MLD in rabbits (mg/kg): 178 i.v. (DaVal) |
Peroxydisulfuric acid, disodium salt - Nature
Open Data Verified Data
sodium persulfate is white crystalline or powder. Easy deliquescence, in the humid air can gradually decompose, high temperature can accelerate the decomposition, release oxygen and become sodium pyrosulfate. Soluble in water, 20 ° C aqueous solution of 549G/L. The aqueous solution was acidic. Can be decomposed by alcohol and silver ions.
Last Update：2024-01-02 23:10:35
Peroxydisulfuric acid, disodium salt - Preparation Method
Open Data Verified Data
prepared by metathesis reaction of ammonium persulfate with sodium sulfate and sulfuric acid.
Last Update：2022-01-01 09:05:18
Peroxydisulfuric acid, disodium salt - Use
Open Data Verified Data
It is used as a gel breaker, a battery depolarizer and an organic polymer emulsion polymerization initiator for oil well fracturing fluid. Photographic industry for film development, fixer I textile industry used as a Desizing agent, vat dye coloring agent. It can also be used as a waste liquid treatment agent, a metal surface treatment agent, an etchant for a printed circuit board, and the like.
Last Update：2022-01-01 09:05:18
Peroxydisulfuric acid, disodium salt - Safety
Open Data Verified Data
rabbit intravenous injection of MLD: 178mg/kg. Contact with organic matter, combustible or easy to oxide combustion, and can combustion, contribute to the fire, severe or even explosion. The dust irritates the eyes, skin and respiratory system. It is prohibited to store and mix with flammable, reducing and organic substances.
Last Update：2022-01-01 09:05:19
Peroxydisulfuric acid, disodium salt - Reference Information
| pH range of acid-base indicator discoloration | 2.5 - 4.0 |
| LogP | -1 at 20℃ |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| strong oxidant | sodium persulfate has strong oxidation, can be used as an oxidant, can be Cr3, the oxidation of Mn2 into the corresponding high oxidation state compounds, when the presence of Ag, can promote the above oxidation reaction; The use of its oxidation can be used as a bleaching agent, metal surface treatment agent, chemical reagents; Pharmaceutical raw materials; accelerators and initiators for batteries, emulsion polymerization reactions. |
| preparation method | (1) Ammonium sulfate aqueous solution is electrolytically oxidized to generate ammonium persulfate, which is then subjected to metathesis reaction with sodium hydroxide, after the by-produced ammonia was removed, it was concentrated under reduced pressure, crystallized and dried to obtain sodium persulfate. (NH4)2S2O8 2NaOH → Na2S2O8 2NH3 2H2O. (2) electrolytic cold sulfuric acid can be prepared by sulfuric acid, and then with the alkali, can be prepared by sodium persulfate. (I) 2HSO4 -- 2e → H2S2O8 (II)H2S2O8 2NaOH → Na2S2O8 2H2O. |
| Use | as an oxidant, bleach and battery depolarization agent for the treatment of photographic waste liquid, used as soft corrosion agent of metal on the surface of printed circuit board, Desizing agent for textile, sulfur dye coloring agent, etc. used in medicine, bleaching, battery, and used as chemical reagent |
| production method | 1. Prepared by metathesis reaction of ammonium persulfate with sodium sulfate and sulfuric acid. Sodium peroxodisulfate can be obtained by treating ammonium persulfate with sodium carbonate. In the fume hood, 43g of Na2CO3 · 10H2O is mixed with 34g of (NH4)2S2O8 and ground into a paste, in order to remove ammonia, the mixture can be heated to 40~50 °c, alternatively, CO2-free air is introduced. The crystals were then drained with a glass sand core funnel and dried in the dark. A more pure product can be made by replacing sodium carbonate with sodium hydroxide. In a 33% ml round-bottom flask were placed 12g of (NH4)2S2O8 and ml of a strength NaOH solution. The flask was connected to a vacuum pump, slightly heated, and ammonia and water were distilled off at a temperature of 30 to 40 °c. After the volume of the solution was reduced to half, the solution was cooled, the crystals were drained with a glass sand core funnel and dried at 30-40 °c for 1-2H. |
| category | oxidant |
| toxicity grade | high toxicity |
| Acute toxicity | intraperitoneal-mouse LD50: 226 mg/kg |
| explosive hazard characteristics | can be mixed with reductant, sulfur, phosphorus, etc, open flame can be exploded |
| flammability hazard characteristics | thermal decomposition of toxic nitrogen oxide gases |
| storage and transportation characteristics | The warehouse is ventilated and dried at low temperature; It is light and easy to discharge; It is combined with organic matter, reductant, sulfur and phosphorus combustible substances, separate storage of food raw materials |
| fire extinguishing agent | water, sand, foam |
| Occupational Standard | TWA 2 mg/m3 |
Last Update：2024-04-09 21:54:55
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