ammonium persulfate


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ammonium persulfate

[ə′mōn·yəm pər′səl‚fāt]
(inorganic chemistry)
(NH4)2S2O8 White crystals which decompose on melting; soluble in water; used as an oxidizing agent and bleaching agent, and in etching, electroplating, food preservation, and aniline dyes.
References in periodicals archive ?
Potassium iodate for calibrators and analytical grade arsenic trioxide, potassium chlorate, perchloric acid (700 g/L), ammonium persulfate, tetraammonium cerium (IV) sulfate dihydrate, sodium chloride, and sulfuric acid were obtained from Wako Pure Chemical Industries.
Ammonium persulfate (APS, Merck) was used without purification.
2-acrylamido-2-methylpropanesulfonic acid (Merck, Darmstadt, Germany), N',N'-methylene bisacrylamide and ammonium persulfate (Fluka, Buchs, Switzerland) were of analytical grade and used without further purification.
Graft copolymers of starch and polyacrylamide (PAAm) were prepared by reactive extrusion using a co-rotating twin-screw extruder and ammonium persulfate initiator.
In 2014, ammonium persulfate accounted for the major market share in terms of volume with increasing demand from various end-use applications such as polymers and electronics.
5%, Acros Organics), NaOH pellets (Sigma Aldrich), ammonium persulfate (APS, 98%+, Sigma Aldrich), and potassium disulfite (KDS, Sigma Aldrich) were used without further purification.
In order to obtain the objectives, a nanocomposite containing poly (acrylamide-co-acrylonitrile) and silver nanoparticles was firstly synthesized by using ammonium persulfate as the initiator and methylene bisacrylamide as the cross-linker.
2] nanocomposite has been prepared in the aqueous media using hydroxypropylcellulose as a steric stabilizer and ammonium persulfate as an oxidant then dedoped with NH3(0.
It is comprised of a peroxide-based developer component containing, by weight, approximately 6-12% hydrogen peroxide; a powder activator component comprised of 40-80% by weight of an alkali metal persulfate selected from the group consisting of sodium persulfate, potassium persulfate and ammonium persulfate, an alkalizing agent component in an aqueous vehicle comprised of 3-25% of an alkalizing agent by weight; and a colorant present in an amount of from 0.
After surfacing mill and polishing the surfaces were treated with a 20% Ammonium Persulfate solution.