styrene

The same is true for the styrene panels used in the design of the structure.

This review [1] cites the absolute highest amount of emitted styrene in the studies they are reviewing to be 113 μg/min.

Using [2] for simplicity with styrene's molar mass (104.15 g/mol), we get to a printer creating at most 0.024 ppm of styrene per minute per m3 of unchanged air.

Polystyrene is derived from styrene a chemical that various plants naturally produce.

Polystyrene derived from a naturally occuring compound styrene found in some plants and can and does breakdown under attack of UV light, acids, microorganisms.

More than half of the entire benzene production is processed into ethylbenzene, a precursor to styrene, which is used to make polymers and plastics like polystyrene.

In other words, as long as you have some air exchange in the room, you'd be orders of magnitude away from the safe work exposure limit on styrene.

When I was about 10 years old I built a plastic styrene model, which included a detailed reactor that I carefully painted in he assigned colors colors.

Polystyrene, funny enough, is easy to chemically recycle but not through pyrolysis, it's the sort of thing you might even demo in a high school chemistry class if styrene wasn't so carcinogenic.

Even the board substrate itself is probably the most toxic kind of plastic out there (other than maybe styrene feed stock) before its cured and being a composite it decomposes the slowest.

But you shouldn't have to come to it through a text-based paradigm, any more than children should be required to study injection-molding and styrene monomers before being allowed to make things out of Lego.

While a pure gum vulcanization of styrene-butadiene has a tensile strength of no more than 2 MPa and negligible abrasion resistance, compounding it with 50% carbon black by weight improves its tensile strength and wear resistance as shown in the table below.

For comparison, the "work exposure limit (WEL) for styrene is currently 100 parts per million (ppm) averaged over an 8-hour day" [4].

And the ABS is more "plastic", perhaps more "B" (butadiene rubber) or less "S" (styrene): I can drill it more cleanly.

Also, you do you, but it's probably not a great idea to boil food in plastic cups or "waxed" (often coated in a styrene compound, not real "wax") paper cups...

“We find that the strength and toughness of the parts we get … are greater than many commonly used materials” for 3-D printing, including acrylonitrile butadiene styrene (ABS) and polylactic acid (PLA).

He said 45's, and most 45's were pressed in Styrene, not PVC.