USD $1.00-1.00 / Kilogram
USD $1.00-1.00 / Kilogram
USD $1.00-1.00 / Kilogram
USD $1.00-1.00 / Kilogram
USD $1.00-1.00 / Kilogram
USD $1.00-1.00 / Kilogram
sodium persulfate basic information |
product name: | sodium persulfate |
synonyms: | sodium peroxydisulfate;sodium peroxodisulfate;sodium persulfate;sodium persulphate;peroxydisulfuricacid([(ho)s(o)2]2o2),disodiumsalt;peroxydisulfuricacid,disodiumsalt;persulfatedesodium;di-sodium peroxodisulphate |
cas: | 7775-27-1 |
mf: | na2o8s2 |
mw: | 238.1 |
einecs: | 231-892-1 |
product categories: | inorganic chemicals;inorganics |
mol file: | 7775-27-1.mol |
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sodium persulfate chemical properties |
mp | 100 °c |
density | 2,4 g/cm3 |
solubility | h2o: 1 m at 20 °c, clear, colorless |
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 reference | 7775-27-1(cas database reference) |
epa substance registry system | peroxydisulfuric 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 |
hazardclass | 5.1 |
packinggroup | iii |
msds information |
provider | language |
---|---|
sodium peroxydisulfate | english |
acros | english |
sigmaaldrich | english |
sodium persulfate usage and synthesis |
physical and chemical properties |
sodium 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 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 (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. |
application |
as 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. |
category | oxidant |
toxicity grading | highly toxic |
acute toxicity | intraperitoneal - mouse ld50: 226 mg / kg |
explosive hazardous characteristics | mixed with a reducing agent, sulfur, phosphorus and others, it can be explosive, when heating, impacting, fire, it can be explosive. |
flammability hazard characteristics | thermal decomposition to produce nitrogen oxide gases |
storage characteristics | treasury ventilation, low temperature drying, light loading and unloading, it is stored separately from organic matter, reducing agents, sulfur, phosphorus flammable, food materials. |
extinguishing agent | water spray, sand, foam |
occupational standards | twa 2 mg / m3 |
chemical properties | white crystalline powder |
general description | a white crystalline solid. very irritating to skin and eyes. may be toxic by skin absorption. used as a bleaching agent. |
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]. |
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. |
sodium persulfate preparation products and raw materials |
raw materials | sodium hydroxide-->ammonium persulfate |
preparation products | 2-(bromomethyl)benzoic acid-->maleic acid-allyl alcohol copolymer |