NPS-5 (SPS)

NPS-5 (SPS) by United Initiators acts as an initiator (source of free radicals) for the polymerization of monomers and strong oxidizing agent in many applications. It is a white, crystalline, odorless salt consisting of technically pure sodium peroxodisulfate and 0.5% silicic acid to enhance the free flowing properties.

• It is used for the emulsion or solution polymerization of acrylic monomers, vinyl acetate, vinyl chloride and for the emulsion copolymerization of styrene, acrylonitrile and butadiene.
• It can also be used for polymerization reactions carried out at lower and even at ambient temperatures in combination with redox systems.
• It is recommended to be used with TBHP-70-AQ to reduce the residual monomer content, particularly where redox systems are used.
• It is non-hygroscopic, easy and safe to handle and has a good storage stability.
• NPS-5 (SPS) has a shelf life of 12 months.
• Recommended dosage level is 0.1-0.5%.