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Styrene is an organic compound with the chemical formula C 6 H 5 CH=CH 2. ... At 100 °C it will autopolymerise at a rate of ~2% per hour, ...
General-purpose polystyrene is clear, hard, and brittle. It is an inexpensive resin per unit weight. It is a poor barrier to air and water vapor and has a relatively low melting point. [6] Polystyrene is one of the most widely used plastics, with the scale of its production being several million tonnes per year. [7]
Anthropogenic sources emit about 142 teragrams (1.42 × 10 11 kg, or 142 billion kg) of carbon per year in the form of VOCs. [31] The major source of man-made VOCs are: [32] Fossil fuel use and production, e.g. incompletely combusted fossil fuels or unintended evaporation of fuels. The most prevalent VOC is ethane, a relatively inert compound.
Residents near Cleves are being urged to leave their homes Tuesday afternoon because a rail car is leaking styrene. What to know about the chemical.
Styrene can be obtained in one stage ... ethylene oxide of 4.4% per year during 2008–2013 and 3% from 2013 to 2018. ... lifetime cancer risk by as much as 3.0 × 10 ...
Acrylonitrile butadiene styrene (ABS) (chemical formula (C 8 H 8) x · (C 4 H 6) y · (C 3 H 3 N) z) is a common thermoplastic polymer. Its glass transition temperature is approximately 105 °C (221 °F). [4] ABS is amorphous and therefore has no true melting point. ABS is a terpolymer made by polymerizing styrene and acrylonitrile in the ...
and this, which does not explain that it's getting to styrene from polystyrene that is the concern: Furthermore, styrene is quickly broken down in the air, evaporates quickly in shallow soil and water, and what remains in soil and water can be further broken down by bacteria and microorganisms.--Wascally wabbit 04:32, 9 June 2011 (UTC)
TPE became a commercial reality when thermoplastic polyurethane polymers became available in the 1950s. During the 1960s styrene block copolymer became available, and in the 1970s a wide range of TPEs came on the scene. The worldwide usage of TPEs (680,000 tons/year in 1990) is growing at about nine percent per year.