Ammonium persulfate

Ammonium persulfate Identification Name Ammonium persulfate Synonyms Ammonium peroxydisulfate Molecular Structure Molecular Formula H8N2O8S2 Molecular Weight 228.19 CAS Registry Number 7727-54-0 EINECS 231-786-5 Properties Density 1.982 Melting point 120 ºC Water solubility 582 g/L (20 ºC) decomposes Safety Data Hazard Symbols O;Xn Details Risk Codes R22;R36/37/38;R42/43;R8 Details Safety Description S22;S24;S26;S37 Details Transport Information UN 1444 Application Polymerization : Initiator for the emulsion or solution Polymerization of acrylic monomers,vinyl acetate,vinyl chloride etc.and for the emulsion co-polymerization of styrene,acrylonitrile,butadiene etc.. Metal treatment : Treatment of metal surfaces(e.g. in the manufacture of semiconductors;cleaning and etching of printed circuits),activation of copper and aluminium surfaces. Cosmetics : Essential component of bleaching formulations. Textile : Desizing agent and bleach activator - particularly for cold bleaching. Others : - Chemical synthesis - Water treatment(decontamination) - Waste gas treatment,oxidative degradation of harmful substances(e.g.Hg) - Disinfectant Paper(modification of starch,repulping particularly for cold bleaching) Packaging & Delivery Packaging Detail: 25kg woven bag or PP bag, 20ft co specification ITEMS Appearance white crystalline salt Assay 98.5% w/w min Active oxygen 6.9% w/w min Residue on ignition(as SO4) 0.02% w/w max Chloride and chlorate(as CL) 0.001% w/w max Manganese(Mn) 0.00005% w/w max Iron(Fe) 0.0005% w/w max Heavy metals(as Pb) 0.0005% w/w max Moisture 0.10% w/w max Decomposition of the product as supplied at above 60°C Recommended storage temperature Normal Temperature Storage stability as from date of delivery 12 months