Ammonium Persulfate is colorless monoclinic crystal or white crystalline powder. It is soluble in water, the solubility is 58.2g/100ml water at 0℃. When heated to decomposition it emits toxic fumes of sulfur oxides, nitrogen oxides and ammonia.
1) Basic information
Product name: Ammonium PERSULFATE
Alias: Diammonium [(sulfonatoperoxy)sulfonyl]oxidanide, Diammonium peroxodisulfate, ammonium peroxydisulphate, Diammonium peroxydisulfate, Ammonium peroxydisulfate, ammonium peroxodisulfate, ammonium persulphate, Diammonium persulphate, diazanium,sulfonatooxy sulfate, Diammonium peroxydisulphate,
CAS No.: 7727-54-0
EINECS No.: 231-786-5
Molecular Formula (MF): (NH4)2S2O8
Molecular Weight (MW): 228.201
2） Physical and chemical properties
Appearance: Colorless monoclinic crystals, sometimes slightly light green;
Specific density (g/ml, 25℃): 1.98;
Purity (by Gas Chromatograph): ≥98.5%;
Melting point (℃/760mm Hg): 120
Package: In 25kg net woven/PE bag with one polyethylene bag inner; In 500kg/1000kg net PP woven bag.
3) Notice on Safety information:
Danger Class: 5.1;
Risk Statements: R22;R36/37/38;R42/43;R8;
Harmful when swallowed. Causes skin irritation. Causes severe eye irritation. May cause allergic skin reactions. May cause respiratory irritation. Inhalation may cause symptoms of allergies or asthma or difficulty breathing.
· H272 May exacerbate combustion; Oxidant.
· H302 Harmful when swallowed.
· H315 Causes skin irritation.
· H319 Causes severe eye irritation.
· H317 May cause allergic skin reactions.
· H335 May cause respiratory irritation.
· H334 Inhalation may cause symptoms of allergies or asthma or difficulty breathing
UN NO.: 1444;
Packing Group: III
RTECS: SE0350000
HS CODE: 28334000
Storage: Store in cool place. Moisture Sensitive. Ambient temperatures.
Keep away from heat sources/sparks/open flames/hot surfaces. Smoking is prohibited. Avoid contact with skin and eyes
4) Uses:
It can be derived by the electrolysis of ammonium sulfate and dilute sulfuric acid and then crystallized. Electrolytic process Ammonium sulfate and sulfuric acid formulates to form liquid electrolyte, it is decontaminated by electrolysis, HSO4-can discharge and generate peroxydisulfate acidat in the anode, and then reacts with ammonium sulfate to generate ammonium persulfate, ammonium persulfate goes through filtration, crystallization, centrifugal separation, drying to get ammonium persulfate product when the content reaches a certain concentration in the anode. Anode reaction: 2HSO4--2e → H2S2O8Cathodic reaction: 2H ++ 2e → H2 ↑(NH4) 2S2O4 + H2S2O8 → (NH4) 2S2O8 + H2SO4
It is used as a Food Preservative, oxidant and initiator of polymers. In chemical industry it is used as a raw material for the manufacture of persulfates and Hydrogen Peroxide; a polymerization aid for organic polymerization; and an initiator for polymerization of vinyl chloride monomers. Grease, soap industry used as a bleaching agent. It is also used in corrosive agents during metal plate etching and oil production in the petroleum industry. Food grade is used as wheat modifier, brewer's yeast mold repellent
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