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Re:Ohio catastrophe is ‘wake-up call’ to dangers of deadly t... by xadhominemx on Monday February 13, 2023 @10:21AM (#34774501)
There were no hospitalizations reported and the chemicals released are not really carcinogens. The risk from this particular chemical spill was acute injury, but fortunately that was avoided.
Re:Ohio catastrophe is ‘wake-up call’ to dangers of deadly t... by clysm on Monday February 13, 2023 @10:37AM (#34774776)
Vinyl chloride is a known human carcinogen that causes a rare cancer of the liver[0].

Livestock is dying and getting sick in the area[1], including fish in rivers[2].

[0] https://en.wikipedia.org/wiki/Vinyl_chloride

[1] https://nypost.com/2023/02/10/animals-sick-dying-near-east-p...

[2] https://www.wkbn.com/news/local-news/east-palestine-train-de...

Re:Ohio catastrophe is ‘wake-up call’ to dangers of deadly t... by xadhominemx on Monday February 13, 2023 @10:48AM (#34774983)
Yes please read the links you just posted. Exposure to high concentrations for a long time (eg, if you spent a career in a vinyl chloride production facility pre-OSHA) is associated with a measurable increase in cancer rate. It’s not going to be a reasonable concern in this instance.
Re:Ohio catastrophe is ‘wake-up call’ to dangers of deadly t... by synthpop on Monday February 13, 2023 @11:03AM (#34775250)
?

In this instance, the risks to be worried about is far more than just cancer. And it isn't exactly comparable to a career in a vinyl chloride factory because factories don't typically have these production chemicals ablaze and mixed with whatever else was in the train wreckage, seeping into the surrounding earth, water and air. Before even speculating on the undetermined adverse health effects of this event in the long term, the immediate impact of this environmental disaster should warrant a mandatory evacuation and corporate accountability.

Re:Ohio catastrophe is ‘wake-up call’ to dangers of deadly t... by xadhominemx on Monday February 13, 2023 @11:22AM (#34775546)
This is not a theoretical question — the burn already happened a week ago and the EPA and other agencies are there monitoring for contaminants.
Re:Ohio catastrophe is ‘wake-up call’ to dangers of deadly t... by mjhay on Monday February 13, 2023 @11:12AM (#34775383)
There are many other chemicals at play here due to the controlled burn under an inversion layer.
Re:Ohio catastrophe is ‘wake-up call’ to dangers of deadly t... by bsenftner on Monday February 13, 2023 @10:48AM (#34774984)
> rare cancer of the liver

Not rare in Ohio, anymore.

[dead]
Re:Ohio catastrophe is ‘wake-up call’ to dangers of deadly t... by LarryMullins on Monday February 13, 2023 @10:58AM (#34775182)
Stop being dismissive of other people's lives. Go live in that town yourself if you're so certain it's safe.
Re:Ohio catastrophe is ‘wake-up call’ to dangers of deadly t... by xadhominemx on Monday February 13, 2023 @11:29AM (#34775666)
Please engage substantively and stop spamming me with the same comment.
Re:Ohio catastrophe is ‘wake-up call’ to dangers of deadly t... by renewedrebecca on Monday February 13, 2023 @02:29PM (#34778937)
It's ok, I'm sure our governor will just declare it a green chemical, and everything will be fine.
Re:Ohio catastrophe is ‘wake-up call’ to dangers of deadly t... by Workaccount2 on Monday February 13, 2023 @11:29AM (#34775653)
Vinyl chloride breaks down quickly into hydrochloric acid in the atmosphere. Including when it is burned (and the low amount phosphene given off when burning).

So immediately following the crash the area was dangerous, but it is already mostly safe again by now.

Re:Ohio catastrophe is ‘wake-up call’ to dangers of deadly t... by margalabargala on Monday February 13, 2023 @11:36AM (#34775796)
To be clear, the timescale on which it breaks down is several days. So you're probably right that there's very little vinyl chloride still around in the environment.

That amount of vinyl chloride can cause a lot of problems to the surrounding populace in several days.

Also, it doesn't break down just into HCl. It also breaks down into formaldehyde. Which is both acutely toxic and also a carcinogen, and is quite a bit more stable in the environment.

Re:Ohio catastrophe is ‘wake-up call’ to dangers of deadly t... by Workaccount2 on Monday February 13, 2023 @11:46AM (#34775964)
Right, but formaldehyde is naturally occurring too. It's in many foods and in your body as well.

The amount that came from ten cars, spread into the atmosphere, is virtually nothing.

Re:Ohio catastrophe is ‘wake-up call’ to dangers of deadly t... by paulmd on Monday February 13, 2023 @01:24PM (#34777806)
> The amount that came from ten cars, spread into the atmosphere, is virtually nothing.

Erm, on what basis do you make that claim?

Ten train cars of dioxin spread over a square mile is a lot. Spread over 100 square miles? Probably still a lot, like the place in missouri that dumped it on all their roads to keep the dust down. That's probably that same order of "10 cars over 10x10 square miles", of a sufficiently nasty thing.

10 cars = safe is a number that needs context and validation and it will depend on the particular chemical.

Re:Ohio catastrophe is ‘wake-up call’ to dangers of deadly t... by Workaccount2 on Monday February 13, 2023 @02:58PM (#34779397)
Where are you getting dioxin from? There was no dioxin involved in this incident.
Re:Ohio catastrophe is ‘wake-up call’ to dangers of deadly t... by paulmd on Monday February 13, 2023 @03:26PM (#34779854)
Dioxin is an example of why saying "10 train cars is fine" is an oversimplification, 10 train cars of dioxin is a problem even if it's spread out over a couple square miles.

Maybe 10 train cars of formaldehyde is fine, maybe not, but, this is something that should be assessed and not dismissed out of hand, even during discourse. Random internet commentators probably don't really know if it's fine. And despite the people on-site saying measurements are fine... animals are getting sick, which is the classic warning sign with chemical spills that things are not fine.

Although there is indeed dioxin formed during the combustion apparently. Bear in mind too that this isn't a controlled incinerator, there could be various things produced at different temps etc.

Re:Ohio catastrophe is ‘wake-up call’ to dangers of deadly t... by xadhominemx on Monday February 13, 2023 @04:14PM (#34780638)
It wasn’t formaldehyde either.
Re:Ohio catastrophe is ‘wake-up call’ to dangers of deadly t... by margalabargala on Monday February 13, 2023 @08:47PM (#34784036)
Vinyl chloride will form some dioxin upon combustion.

When left to break down in the environment, after several days vinyl chloride will break down into a combination of formaldehyde and hydrochloric acid. The latter of which won't be harmful, but the former will be.

Re:Ohio catastrophe is ‘wake-up call’ to dangers of deadly t... by XorNot on Tuesday February 14, 2023 @04:15AM (#34787156)
Vapor phase formaldehyde breaks down in the air within hours.[1]

It will also be destroyed in the soil by any number of mechanisms, with a half-life of about 14 days. [2]

[1] https://www.atsdr.cdc.gov/toxfaqs/tfacts111.pdf

[2] https://webwiser.nlm.nih.gov/substance?substanceId=1&identif...

Re:Ohio catastrophe is ‘wake-up call’ to dangers of deadly t... by xadhominemx on Tuesday February 14, 2023 @07:55AM (#34788609)
I do not think combustion of vinyl chloride at atmospheric pressure is going to create much if any dioxin
Re:Ohio catastrophe is ‘wake-up call’ to dangers of deadly t... by margalabargala on Monday February 13, 2023 @03:35PM (#34780010)
Ten train cars worth of formaldehyde averaged over the entire atmosphere would be nothing to worry about, I agree.

Let's say that two train cars worth sank into the ground before breaking down. Now there's two train cars worth of formaldehyde in the groundwater in a localized area.

It's not obvious to me that this is a safe situation. There are plenty of plausible scenarios that could be reality, that would be a very unsafe situation for local residents.

Thus is should be treated as though it is that worst-case bad scenario unless shown otherwise, rather than wand-waving "oh it's probably fine". These are people's lives that are at stake.

Re:Ohio catastrophe is ‘wake-up call’ to dangers of deadly t... by dapearce on Monday February 13, 2023 @10:35AM (#34774716)
Vinyl chloride is a declared brain, lung, blood, and liver carcinogen.

https://www.fastcompany.com/90848025/ohio-train-derailment-t...

Re:Ohio catastrophe is ‘wake-up call’ to dangers of deadly t... by bmj on Monday February 13, 2023 @10:29AM (#34774597)
Have there been analysis done on how this affected local wildlife?
Re:Ohio catastrophe is ‘wake-up call’ to dangers of deadly t... by djbusby on Monday February 13, 2023 @11:04AM (#34775263)
Does loads of pictures of dead animals count?
Re:Ohio catastrophe is ‘wake-up call’ to dangers of deadly t... by bmj on Monday February 13, 2023 @12:00PM (#34776229)
Yep. That was directed at the "everything is fine" post above.
Re:Ohio catastrophe is ‘wake-up call’ to dangers of deadly t... by lordnacho on Monday February 13, 2023 @10:25AM (#34774545)
Isn't vinyl chloride a carcinogen?
Re:Ohio catastrophe is ‘wake-up call’ to dangers of deadly t... by LarryMullins on Monday February 13, 2023 @10:35AM (#34774711)
Hell yes, and burning it is sure to create dioxins which are carcinogenic too.
Re:Ohio catastrophe is ‘wake-up call’ to dangers of deadly t... by xadhominemx on Monday February 13, 2023 @10:45AM (#34774932)
You can get dioxins when burning vinyl chloride polymers (“poly vinyl chloride”), but not the vinyl chloride monomer, if my chemistry degree serves me correctly.
Re:Ohio catastrophe is ‘wake-up call’ to dangers of deadly t... by LarryMullins on Monday February 13, 2023 @10:51AM (#34775050)
Is that a risk you'd take with your own life, or just a risk you think other people should take with their own lives but not yours?
Re:Ohio catastrophe is ‘wake-up call’ to dangers of deadly t... by xadhominemx on Monday February 13, 2023 @11:03AM (#34775256)
Well like I said I used to be a chemist so I was exposed to organic vapors every day. if the dioxins are there they will be very easy to measure.
Re:Ohio catastrophe is ‘wake-up call’ to dangers of deadly t... by LarryMullins on Monday February 13, 2023 @11:20AM (#34775515)
For starters, you could acknowledge that a train explosion is already well outside normal lab conditions for vinyl chloride. Don't pretend you know what compounds were formed in this accident. Modeling this incident as a low exposure (see: your dismissal of the carcinogenic nature of vinyl chloride) to the pure substance is absurd.

Put your life where your mouth is and go live there.

Re:Ohio catastrophe is ‘wake-up call’ to dangers of deadly t... by dang on Wednesday February 15, 2023 @02:30AM (#34801055)
Would you please stop posting flamebait/unsubstantive comments? You've been doing it repeatedly, unfortunately, and if you keep doing it then we're going to have to ban you again.

If you'd please review https://news.ycombinator.com/newsguidelines.html and stick to the rules when posting here, we'd appreciate it.

Re:Ohio catastrophe is ‘wake-up call’ to dangers of deadly t... by perihelions on Monday February 13, 2023 @12:32PM (#34776895)
AP quotes two different experts warning about dioxins from this incident. Did they get it wrong?

https://apnews.com/article/rail-accidents-evacuations-ohio-h...

Re:Ohio catastrophe is ‘wake-up call’ to dangers of deadly t... by xadhominemx on Tuesday February 14, 2023 @08:00AM (#34788659)
Yes, I disagree with the professor. I think you will get very little dioxin contamination from burning vinyl chloride monomer in atmospheric conditions.
Re:Ohio catastrophe is ‘wake-up call’ to dangers of deadly t... by rbanffy on Wednesday February 15, 2023 @09:35AM (#34804319)
Can’t heat drive some polymerisation?
Re:Ohio catastrophe is ‘wake-up call’ to dangers of deadly t... by xadhominemx on Thursday February 16, 2023 @09:41AM (#34819218)
It’s being actively combusted…