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Sodium persulfate

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CAS:7775-27-1
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CAS:7775-27-1
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CAS:7775-27-1
Purity:98+% Remarks:20202
Sodium persulfate Basic information
Physical and Chemical Properties Strong oxidants Preparation method Uses Category Toxicity grading Acute toxicity Explosive hazardous characteristics Flammability hazard characteristics Storage Characteristics Extinguishing agent Occupational standards
Product Name:Sodium persulfate
Synonyms:Sodium Peroxodisulfate 〔Sodium Persulfate〕;SODIUM PEROXIDISULFATE FOR ANALYSIS EMSURE;FREE SAMPLE NCV SODIUM PERSULFATE;Formaldehyde Activator Solution, for Purpald Method;SODIUM PEROXYDISULFATE;SODIUM PEROXODISULFATE;SODIUM PERSULFATE;SODIUM PERSULPHATE
CAS:7775-27-1
MF:Na2O8S2
MW:238.1
EINECS:231-892-1
Product Categories:Inorganic Chemicals;Inorganics
Mol File:7775-27-1.mol
Sodium persulfate Structure
Sodium persulfate Chemical Properties
Melting point 100 °C
density 2,4 g/cm3
storage temp. Store at +15°C to +25°C.
solubility H2O: 1 M at 20 °C, clear, colorless
form Solid
color White to yellow
PH3.5-3.8 (100g/l, H2O, 20℃)
Water Solubility 550 g/L (20 ºC)
Merck 14,8656
Stability:Stability Unstable. Strong oxidizer. Contact with combustible material may cause fire. Incompatible with combustible material, strong reducing agents, strong bases, alcohols, aluminium, magnesium. Protect from moisture.
CAS DataBase Reference7775-27-1(CAS DataBase Reference)
EPA Substance Registry SystemPeroxydisulfuric acid ([(HO)S(O)2]2O2), disodium salt(7775-27-1)
Safety Information
Hazard Codes O,Xn
Risk Statements 8-22-42/43-36/37/38
Safety Statements 22-36/37-45-36/37/39-26-17
RIDADR UN 1505 5.1/PG 3
WGK Germany 1
RTECS SE0525000
TSCA Yes
HazardClass 5.1
PackingGroup III
MSDS Information
ProviderLanguage
Sodium peroxydisulfate English
ACROS English
SigmaAldrich English
Sodium persulfate Usage And Synthesis
Physical and Chemical PropertiesSodium persulfate, also known as sodium peroxydisulfate is White crystal or crystalline powder, odorless, tasteless. Formula is Na2S2O8, relative molecular mass is 238.13. Gradual decomposition at room temperature, heating or rapidly decompose in ethanol, decomposition to release oxygen and produce sodium pyrosulfate. Moisture and platinum black, silver, lead, iron, copper, magnesium, nickel, manganese and other metal ions or their alloys can promote the decomposition, it decomposes rapidly and emit hydrogen peroxide at high temperature (about 200 ℃). It is soluble in water (70.4 when 20 ℃). It has strong oxidizing. There is a strong irritation to the skin, prolonged contacting with the skin can cause allergies, should pay attention to it when operation. Rat oral LD50 is 895mg/kg. It should be Sealed storage. heat the ammonium persulfate and sodium hydroxide or sodium carbonate solution to remove carbon dioxide and ammonia to obtain sodium persulfate in the Laboratory.
The above information is edited by the chemicalbook of Yan Yanyong.
Strong oxidantsWith strong oxidizing, Sodium persulfate can be used as an g agent, which can oxidize Cr3 +, Mn2 + and so on to the corresponding compound of high oxidation state, when there is the presence of Ag +, which can promote the oxidation reaction. Due to its oxidizing properties, it can be used as a bleaching agent, metal surface treatment agent, chemical reagents, pharmaceutical raw materials, accelerator and initiator of battery and emulsion polymerization.
Preparation method1. The electrolytic oxidation of the aqueous solution of ammonium sulfate is to obtain ammonium persulfate, and then metathesis reaction with sodium hydroxide, after the expulsion of the ammonia by-product, and then concentrated under reduced pressure, crystallization, drying, to obtain sodium sulfate.
(NH4) 2S2O8 + 2NaOH → Na2S2O8 + 2NH3 + 2H2O.
2. Dithionic acid can be prepared by electrolysis of cold sulfuric acid won, which reacts with alkali and then obtain sodium sulfate.
2HSO4--2e → H2S2O8
H2S2O8 + 2NaOH → Na2S2O8 + 2H2O.
UsesAs oxidants, bleach and battery depolarizer.
For waste processing in the photographic industry, used as a soft metal surface corrosion agents of the printed circuit board and textile desizing agents, sulfur dyes colorformer.
Used in medicine, bleach, batteries, and used as a chemical reagent.
CategoryOxidant
Toxicity gradingHighly toxic
Acute toxicityIntraperitoneal-mouse LD50: 226 mg/kg
Explosive hazardous characteristicsMixed with a reducing agent, sulfur, phosphorus and others, it can be explosive, when heating, impacting, fire, it can be explosive.
Flammability hazard characteristicsThermal decomposition to produce nitrogen oxide gases
Storage CharacteristicsTreasury ventilation, low temperature drying, light loading and unloading, it is stored separately from organic matter, reducing agents, sulfur, phosphorus flammable, food materials.
Extinguishing agentWater spray, sand, foam
Occupational standardsTWA 2 mg/m3
Chemical Propertieswhite crystalline powder
UsesBleaching and oxidizing agent; promoter for emulsion polymerization reactions.
General DescriptionA white crystalline solid. Very irritating to skin and eyes. May be toxic by skin absorption. Used as a bleaching agent.
Air & Water ReactionsWater soluble. Decomposes slowly in moist air.
Reactivity ProfileSodium persulfate is a strong oxidizing agent. Reacts with many combustible materials and reducing agents, often vigorously enough to start fires or cause explosions [Handling Chemicals Safely 1980 p. 855]. Decomposes gradually under ordinary conditions decomposition is promoted by moisture and heat [Merck]. Decomposed by alcohol and silver ions [Merck].
Health HazardInhalation, ingestion or contact (skin, eyes) with vapors or substance may cause severe injury, burns or death. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may cause pollution.
Fire HazardThese substances will accelerate burning when involved in a fire. Some may decompose explosively when heated or involved in a fire. May explode from heat or contamination. Some will react explosively with hydrocarbons (fuels). May ignite combustibles (wood, paper, oil, clothing, etc.). Containers may explode when heated. Runoff may create fire or explosion hazard.
Sodium persulfate Preparation Products And Raw materials
Raw materialsSodium hydroxide-->Ammonium persulfate
Preparation Products2-(Bromomethyl)benzoic acid-->Maleic acid-allyl alcohol copolymer
Tag:Sodium persulfate(7775-27-1) Related Product Information
Potassium persulfate Sodium bisulfate Sodium formate Sodium citrate Sodium bicarbonate Sodium carbonate Sodium gluconate Ammonium persulfate Trans-hydroxy sulfone Sodium bisulfate monohydrate Sulfurous Acid KJELDAHL TABLETS Hydrogen peroxide Sodium dodecyl sulfate Sodium sulfate Sodium acetate Sodium dithionite Sodium persulfate