The results indicate that alkyl polyoxyethylene nonionic surfactants significantly accelerated initial persulfate decomposition due to radical-chain processes induced by the oxyethylene functional groups, whereas alkylphenol polyoxyethylene nonionic surfactants retarded initial persulfate decomposition by quenching the radical-chain processes by the aromatic rings. At 25 degrees centigrade the same amount of persulphate is lost in 30 days. Product identifier Product form : Substance Substance name : Sodium persulfate Formula : Na 2 S 2 O 8 Molecular weight : 238.10 g/mol CAS No. Sodium Persulfate < > Molecular Formula: Na2S2O8 molecular Weight: 238.13 Structural Formula: Alias: Sodium Persulfate. 2. It is the sodium salt of peroxydisulfuric acid, H2S2O8, an oxidizing agent. Use the link below to share a full-text version of this article with your friends and colleagues. Decomposes gradually under ordinary conditions decomposition is promoted by moisture and heat [Merck]. and you may need to create a new Wiley Online Library account. Persulfate Decomposition Kinetics in the Presence of Aquifer Materials 293 characteristics due to oxidation, and attempts to develop predictive relationships between the quantifiable aquifer properties and persulfate decomposition rate coefficients. Learn more. always wear the appropriate safety gear when working with or around chemicals. Simultaneous Absorption and Oxidation of Nitric Oxide and Sulfur Dioxide by Aqueous Solutions of Sodium Persulfate Activated by Temperature. decomposition. Decomposition may produce toxic fumes of: sulfur oxides (SOx). Exposure to moisture. In Situ Chemical Oxidation of Contaminated Soil and Groundwater Using Persulfate: A Review. Many of the compounds that can be oxidized by the heat … For a 10 % solution of sodium persulphate 10% of the active material will decompose in about 30...40 hours at 50C temperature. Excess heat. Polymer-Plastics Technology and Engineering. Decomposition Rates of 4% Solutions 10 Decomposition Rates of 10% Solutions 11 Typical Analysis of Persulfates 11 Analytical Chemistry 12 Assay Procedures 12 General Material Information Persulfate Handling and Safety 13 Personal Protective Equipment 13 First Aid 13 Disposal 13 Shipping 13 Containers and Packaging 13 Storage 14 Decomposition Hazard 14 Decomposition Prevention 14 … It is a strong oxidizing agent … Reactivity: No information available Possibility of Hazardous Reactions: Hazardous polymerization will not occur 13. The naturally occurring reduced metals in the subsurface can often serve as metal catalyst for persulfate oxidation and thus save the effort of injecting ferrous iron. Decomposes on heating and produces toxic fumes of sulfur oxides (SOx) and sodium monoxide (Na2O). Sodium persulfate is the inorganic compound with the formula Na2S2O8. 10 Decomposition Rates of 4% Solutions / Decomposition Rates of 10% Solutions 11 Typical Analysis of Persulfates 12 Analytical Chemistry / Assay Procedures General Material Information 13 Handling and Safety / First Aid / Storage / Containers and Packaging 14 Disposal / Shipping / Decomposition Hazard & Prevention Customer Support Services 15 Quality Assurance / Technical Services 16 Contact … Avoid dust formation. By modifying the composition of the mother liquor, it is possible to separately crystallize pure sodium sulfate decahydrate from the mother liquor and thus maintain a sufficiently low sulfate … On the other hand, alkyl sulfonate anionic surfactants and alkylbenzene sulfonate surfactants retarded initial persulfate decomposition to some extent; Coulomb repulsion of SO4−/S2O82− and surfactant anion/radical, and entry of surfactant radical anion from the pseudo-aqueous phase into the pseudo-micellar phase may contribute to retarding initial persulfate decomposition. ² Self-accelerating decomposition temperature; relates to a container size of one bag (25 kg, 55 lbs) only. When surfactants are coupled with persulfate-based ISCO (in situ chemical oxidation) to facilitate the remediation of soil-sorbed hydrophobic organic contaminants or non-aqueous phase liquids, surfactant selection is critical in avoiding excessive nonproductive consumption of persulfate and ensuring proper longevity of persulfate. Sodium persulfate concentration is regarded as a vital and influential factor for thermally activated SPS oxidation due to its direct impact on the sulfate radical equilibrium. NOTE: All WHMIS required … It is a white solid that dissolves in water. Photoinduced surface crosslinking of superabsorbent polymer particles. Seeded emulsion polymerization of styrene: influence of acrylic acid on the particle growth process. NA = Not Available; ND = Not Determined; NE = Not Established; NF = Not Found; C = Ceiling Limit; See Section 16 for Additional Definitions of Terms Used . On the Modeling of Acrylic Acid Copolymerization in an Aqueous Solution: A Modular, Integrated Approach. Use of these compounds is … Oxides of sulfur. The resulting sodium persulfate is generally recovered by spray drying or vacuum crystallization. 4; Skin Irrit. Sodium persulfate Last updated September 28, 2019. Further kinetic and mechanistic studies were then carried out in the presence of representative surfactants from the four families of surfactants frequently applied in subsurface remediation. Experimental Validation of the Explicit Radical-Particle Size Distribution Approach for Modeling Emulsion Polymerization: The Seeded Emulsion Polymerization of Styrene. Please check your email for instructions on resetting your password. It is a strong oxidizer. Sodium Persulfate Safety Data Sheet according to Federal Register / Vol. … Excessive ferrous iron (greater than 750 mg/L) can result in the rapid decomposition of persulfate and therefore a loss in oxidation performance. ..... 59 Figure … Dispersed‐Phase Polymerization Processes. SODIUM PERSULFATE is a strong oxidizing agent. Sodium persulfate; Names; Other names . Chemists call it sodium peroxosulphate, short form NaPS, sodium persulfate is its trade name, the salt of peroxodisulphuric acid. The effect of treatment temperature, T (60–90°C), SPS concentration, [SPS], (0.05–0.30 M), and solution pH (3.0–8.4) were characterized. Sodium Persulfate Section 1 ­ Chemical Product and Company Identification ... Decomposition Temperature: Solubility in water:550 g/l (20°C) Specific Gravity/Density: Molecular Formula:Na2O8S2 Molecular Weight:238.09 Section 10 ­ Stability and Reactivity Chemical Stability: Stable under normal temperatures and pressures. Industrial & Engineering Chemistry Research. Synthesis of Cross-Linked, Partially Neutralized Poly(Acrylic Acid) by Suspension Polymerization in Supercritical Carbon Dioxide. +86-400-6021-666; service@molbase.com; Sign in; Register; About Us; Chinese; Search Batch Search. DOI: 10.1089/ees.2006.0244. https://doi.org/10.1016/j.cej.2019.123303. Data for moist CAROAT® gained for a product moisture of 3.6 %. WikiMili The Free Encyclopedia. Description Sodium persulfate is a white, crystalline, odourless salt. Hazardous Decomposition Products Sulfur oxides, sodium oxides. It is a severe irritant of the skin, eyes, and respiratory system. Reacts with many combustible materials and reducing agents, often vigorously enough to start fires or cause explosions [Handling Chemicals Safely 1980 p. 855]. Sodium persulfate 7775-27-1 MSDS report, Sodium persulfate MSDS safety technical specifications search, Sodium persulfate safety information specifications ect. The reactor was sealed immediately and a constant current was applied. Polymerization in a magnetic field, part 17: Styrene copolymerization with 2,3-epoxypropyl methacrylate. Learn about our remote access options, Superabsorbent Products Research and Development Laboratories, The Dow Chemical Company, Midland, Michigan 48674, Analytical Sciences Laboratory, The Dow Chemical Company, Midland, Michigan 48667. However, high concentrations of partially neutralized acrylic acid (high solids) decrease the decomposition rate of persulfate relative to that in the presence of acrylic acid (not neutralized). Permanganate use as an oxidant for remediation (typically employing either the potassium or sodium salt) has gained popularity over the past decade and is widely practiced. Typical initiators are persulfates, for example, sodium, potassium, or ammonium persulfate, which are activated by thermal energy; typical polymerization temperatures are in the range of 70–90 °C. May emit irritating, poisonous or corrosive fumes. 1; Eye Irrit. Overall, the results offer insightful structure-based guidance in selecting proper surfactants for surfactant-enhanced persulfate-based ISCO. It is a colourless (white) salt that is highly soluble in water, much more so than the related potassium salt. Transfer of Semibatch Processes to Continuous Processes with Side Injections—Opportunities and Limitations. The dissociation rate coefficient of persulfate in emulsion polymerization systems. Number of times cited according to CrossRef: Sulfaquinoxaline oxidation by UV‐C activated sodium persulfate: Degradation kinetics and toxicological evaluation. Materials Styrene and BA were purified by washing with 4 % NaOH solution and subsequently with! With Fe ( II ) -Activated Sodium persulfate 7775-27-1 SE0535000 231-892-1 60-100 0.1 NE NF NF NF NE... The Explicit Radical-Particle Size Distribution Approach for Modeling emulsion polymerization, 11702-11711 highly in... 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