7775-27-1 Usage
Description
Sodium persulfate is a white crystalline solid that is very irritating to skin and eyes and may be toxic by skin absorption. It is commonly used as a bleaching agent due to its strong oxidizing properties.
Uses
Used in Hair Cosmetics and Detergents:
Sodium persulfate is used as a bleach, both as a standalone agent in hair cosmetics and as a component in detergents. It provides effective bleaching and cleaning properties.
Used in Metal Etching and Pickling:
In the metal industry, sodium persulfate serves as a replacement for ammonium persulfate in etching mixtures for zinc and printed circuit boards. It is also used for pickling of copper and some other metals, enhancing the metal's surface quality and preparing it for further processing.
Used in Emulsion Polymerization:
Sodium persulfate acts as an initiator for emulsion polymerization reactions, such as those involving acrylonitrile butadiene styrene. It generates free radicals, which are essential for the polymerization process, and is particularly useful for accelerated curing of low formaldehyde adhesives.
Used in Soil Conditioning and Remediation:
As a soil conditioner, sodium persulfate helps improve soil structure and fertility. It is also employed in soil remediation processes to break down contaminants and improve soil quality.
Used in Dyestuffs and Starch Modification:
Sodium persulfate is utilized in the production of dyestuffs and the modification of starch, contributing to the development of various industrial products.
Used in Textile Desizing and Waste Processing:
In the textile industry, sodium persulfate is used as a desizing agent for oxidative desizing, helping to remove size materials from fabrics during the manufacturing process. It is also employed in waste processing in the photographic industry and as a soft metal surface corrosion agent for printed circuit boards.
Used in Redi-Dri Packaging:
Sodium persulfate is a key component in the innovative Redi-Dri packaging product line, which eliminates clumping material without the need for chemical additives, anti-clumping agents, or hydrophobic compounds. This offers a more convenient and safer way to handle products.
Chemical Properties:
Sodium persulfate is a white, crystalline powder that is soluble in water. It decomposes in moist air and is decomposed by alcohol, making it a reactive and versatile chemical compound for various applications.
Physical and Chemical Properties
Sodium persulfate, also known as sodium peroxydisulfate is a 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 ℃).
Sodium persulfate 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.
Strong oxidants
With 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 method
1. 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.
storage
Sodium persulfate is a strong oxidizer and a severe irritant of skin, eyes, and respiratory system. It is almost non-hygroscopic and has particularly good ability to be stored for long time. It is easy and safe to handle. It is not combustible, but releases oxygen easily and assists combustion of other materials.
Conditions/ substances to avoid mixing persulfates with are: moisture, heat, flame, ignition sources, shock, friction, reducing agents, organic material, sodium peroxide, aluminum and powdered metals.
Air & Water Reactions
Water soluble. Decomposes slowly in moist air.
Reactivity Profile
Sodium 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].
Hazard
By ingestion, strong irritant to tissue.
Health Hazard
Inhalation, 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 Hazard
These 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.
Flammability and Explosibility
Nonflammable
Safety Profile
Poison by intraperitoneal and intravenous routes. A powerful oxidizer; can cause fires. When heated to decomposition it emits toxic fumes of SOx and Na2O. See also SULFATES.
Check Digit Verification of cas no
The CAS Registry Mumber 7775-27-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,7,7 and 5 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 7775-27:
(6*7)+(5*7)+(4*7)+(3*5)+(2*2)+(1*7)=131
131 % 10 = 1
So 7775-27-1 is a valid CAS Registry Number.
InChI:InChI=1/2Na.H2O5S/c;;1-5-6(2,3)4/h;;1H,(H,2,3,4)/q2*+1;/p-2
