Sodium peroxodisulfate

Peroxodisulfates. The salts of peroxodisulfuric acid are commonly called persulfates, three of which are made on a commercial scale ammonium peroxodisulfate [7727-54-0] (NH4)2S20g potassium peroxodisulfate [7727-21-1] K2S20g and sodium peroxodisulfate [7775-27-1] Na2S20g. The peroxodisulfates are all colorless, crystalline soHds, stable under dry conditions at ambient temperature but unstable above 60°C. 

The LD q value for sodium peroxodisulfate using iv adininistration in rabbits is 178 mg/kg. 

When aqueous solutions of the polymerisation initiators 2,2/-azobis(2-amidinio-propane) chloride and sodium peroxodisulfate are mixed, the title compound separates as a water insoluble shock-sensitive salt. The shock-sensitivity increases as the moisture level decreases, and is comparable with that of lead azide. Stringent measures should be used to prevent contact of the solutions outside the polymerisation environment. (The instability derives from the high nitrogen (21.4%) and oxygen (31.6%) contents, and substantial oxygen balance, as well as the structural factors present in the salt.)... 

Aldehyde 244 reacts with manganese dioxide and sodium cyanide in ethanol to give ethyl ester 245 (Scheme 19), while oxidation of alcohol 12 with sodium peroxodisulfate in the presence of a catalytic amount of ruthenium chloride furnishes the carboxylic acid 246 (Scheme 19) <1998CPB287>. 

Sodium perchlorate, 4040 Sodium permanganate, 4703 Sodium peroxide, 4803 Sodium peroxodisulfate, 4809 f Sulfur, 4897 Sulfuric acid, 4479 Sulfur trioxide, 4849... 

Potassium peroxodisulfate, 4668 f 2-Propen-l-ol, 1223 f Propylene oxide, 1225 Pyridine N--oxide, 1849 Sodium azide, 4758 Sodium chloroacetate, 0694 Sodium methoxide, 0464 Sodium 3-nitrobenzenesulfonate, 2184 Sodium peroxodisulfate, 4809 Sodium trichloroacetate, 0608 Styrene, 2945 Sucrose, 3558... 

In a 600 ml glass beaker equipped with a magnetic stirrer and a thermometer 25 g acrylic acid, 0.1 g methylene blsacrylamide,and 0.12 g sodium carbonate are dissolved in 60 ml dist. water. 0.7 ml of an aqueous sodium peroxodisulfate solution (Na2520g,... 

The three peroxodisulfates are all toxic and irritating to skin, eyes, and mucous membranes. The LDlo value for sodium peroxodisulfate using iv administration in rabbits is 178 mg/kg. 

Sodium chlorate, 4033 Sodium chlorite, 4032 Sodium dichromate, 4244 Sodium iodate, 4619 Sodium nitrate, 4716 Sodium nitrite, 4715 Sodium perchlorate, 4034 Sodium permanganate, 4698 Sodium peroxide, 4797 Sodium peroxodisulfate, 4803 f Sulfur, 4891 Sulfur trioxide, 4843 Sulfuric acid, 4473... 

Potassium hydrogen acetylenedicarboxylate, 1378 Potassium peroxodisulfate, 4663 t 2-Propen-l-ol, 1219 t Propylene oxide, 1221 Pyridine /V-oxide, 1843 Sodium 3-nitrobenzenesulfonate, 2177 Sodium azide, 4753 Sodium chloroacetate, 0690 Sodium methoxide, 0463 Sodium peroxodisulfate, 4803 Sodium trichloroacetate, 0605 Styrene, 2940 Sucrose, 3552... 

A polymerization vessel was charged with water (300 g), 33% polymer styrene latex (62 g, dso of 30 nm), 10% of the initiator solution, and sodium peroxodisulfate and then heated to 95°C. Using two separate feeds, the monomer emulsion present in... 

In a 600 ml glass beaker equipped with a magnetic stirrer and a thermometer 25 g acrylic acid, 0.1 g Af,Af -methylene(bisacrylamide), and 0.12 g sodium carbonate are dissolved in 60 ml dist. water. 0.7 ml of an aqueous sodium peroxodisulfate solution (Na2S20g, 10 wt%) are added slowly at room temperature to the reaction mixture in the beaker. The mixture foams strongly and a temperature increase can be observed when the addition is too quick. One has to be careful that the temperature does not exceed 25°C. If necessary, cooling is applied briefly but removed afterwards. The mixture should be set to pH 4.9. 

Since in situ PEDT polymers are quite insoluble in most commonly used solvents, in situ PEDT cannot be easily made into a processable, coatable solution. However, an industrially usefiil form of oxidized PEDT can be made by aqueous oxidative polymerization of the EDT monomer in the presence of a template polymer, usually polystyrene sulfonic acid (PSS or PSSA). PSS is a commercially available water-soluble polymer and can thus serve as a good dispersant for aqueous PEDT. Polymerization with the oxidant sodium peroxodisulfate yields a PEDT PSS-complex in its conductive, cationic form (Figure 10.5). 

Tubular ISE composed of a DPNi containing film Sodium peroxodisulfate/ hydrazine/Griess Alkaline peroxodisulfate/Cd-column/Griess Sodium peroxodisulfate/Cu-Cd column/Griess... 

Phosphorus Sodium peroxodisulfate in Spectrophotometry O.OIO-I.OmgPr Determination of dissolved... 

Common initiators for emulsion polymerization are compounds containing a peroxide bond, such as hydrogen peroxide and sodium peroxodisulfate. The most commonly used are the latter type, which contribute significantly to latex stabilization by introducing terminal sulfate groups on each polymer chain formed in the initial solution polymerization. 

Scheme 16 Polymerization of EDOT to PEDOTrPSS using polystyrene sulfonic acid as counter ion. The oxidizing agent can be, e.g., sodium peroxodisulfate [85]...

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