Polypropylene (PP) is a semi-crystalline thermoplastic polymer made from propylene monomers through addition polymerization. It is usually a white waxy solid, non-toxic, odorless, transparent in appearance and light in texture. Its chemical formula is (C3H6)n, and its density is 0.89-0.92 g/cm3, making it the thermoplastic resin with the lowest density. Its melting point is 164-176°C, softening at around 155°C, and its operating temperature range is -30-140°C.
Polypropylene is antibacterial and easy to dye, and has good insulation properties, chemical stability, heat resistance, transparency, corrosion resistance, weather resistance and plasticity.
Four cargo ships carrying urea and DAP crossed the Strait of Hormuz en route to India, resolving previous supply concerns and raising national fertilizer stocks to 19.60 million metric tons ahead of t
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