Some refer to a specific substance, some are generic.

1993 is a generic one for basically any type of fuel oil. You'll see diesel placarded as this. 1203 for gasoline. 3082 is a generic one as well. I know that MDI will use it, but so will a bunch of other generally not so hazardous substances. Then you get specific ones like 1017 for Chlorine gas, 1005 for Anhydrous Ammonia, 1789 for Hydrochloric Acid, 1824 for Caustic Soda, and the list goes on.

There's a little orange book (Emergency Response Guide) that will list what the substances are and basic emergency response actions(go figure). It's actually helpful when you know what industry accepts which product and all that.

The little number there on the bottom refers to chemicals class. 2 is gases, 3 is flammable liquids, oxidizers a class 5, 8 will be corrossives, and 9 is miscellaneous.

A few others I'm forgetting, but you get the gist. Some will even be subdivided like 2.3 being a poisonous gas. Protip: If you ever see the words "Inhalation Hazard" on something, it's actually really fucking bad and dangerous. Like seriously bad.

>>132031
Is there a PDF of this little orange book anywhere on the net? I can zip it into iBooks and keep it for reference. I saw one earlier tonight that was 1778

>>132032
http://phmsa.dot.gov/staticfiles//PHMSA/DownloadableFiles/Files/Hazmat/ERG2012.pdf

A new version should be coming out soon.

>>132033
Many thanks KPow, I've got me some easy reading to help me fall asleep tonight. Let me know when the new edition comes out

That's how I knew a train full of Israeli containers was hauling containers of Potassium Fluoride through Tacoma.

Don't mind me just heading to Anthto Con

>>132059
Worst I've ever handled is a 1051 placard.

Hydrogen Cyanide, or Prussic Acid, or even more infamously, the active ingredient in Zyklon B.

It has a billboard on the side of the car letting you know what to do in an emergency.

>>132061
I'm somewhat surprised that a madman hasn't tried to steal a chemical train in order to use it as a terror weapon. You could get some pretty impressive results with those kinds of chemicals.

Ahh, UN numbers.

For chlorine, ethylene oxide and such, I'd nope until it blows away - and that's what cleaning crews would probably do too. Of course for those you can also tell it spilled because there's a pile of dead shit around it.

Things like cyanides though I'd nope the fuck away for a while. Get someone else to deal with it, I'm just a half breed of chemist and chemical engineer in training.

oops, spam filter ate this paragraph.

>>132060

>AnthroCon

You are bad, and you should feel bad

>>132067

You think he had anything to do with what happened at that one in Chicago?

>>132064
This is true. Not worried at all about HCL or caustic soda. It's stuff like ammonia, ethlyene oxide, hydrogen fluoride, sulfur trioxide, chlorine, and other poisonous gases Flammable stuff doesn't worry me too much either.

Yeah I tend not to worry about acid eather.
Pic related with F40PH to prove that it is me

>>132073

>Pic related with F40PH to prove that it is me

Don't think that any of us were truly worried about that.

>>132073
Now if only you'd drink it to really prove yourself.

>>132089 No U
Also sulfuric acid produces a very exothermic reaction when it comes into contact with water so putting it in a mouth full of water is probably a bad idea even after the fact it burns with heat and then burn with ACID he get f'd over twice

>>132097
Really? I don't believe you. Take a video and prove it.

>>132097
CHUG CHUG CHUG CHUG CHUG

Enjoy this Jem from history...

>>132102
In the file folder I was able to get that picture, I found this next to it.

>>132100
http://breakingdownscience.tumblr.com/post/84396565021/chemical-burns-or-death-by-sulfuric-acid

>>132113

>Cis she/her pronouns

That somebody would feel any obligation to put that is far more disgusting than the photos.