So a bottle of windshield de-icer broke in my car, which pisses me off (no idea why a plastic bottle would be so fragile when it contains such a toxic chemical), spilling about 6-8 oz of the stuff on the floor of the drivers side. I think the stuff is 40% methanol or so, so that is bad.
I removed the floor mat and took that out of the car. I soaked up what I could with bathroom towels. I also cleaned the area with soap and water while wearing a glove. Now I am leaving the window open for a few days and will drive a different car for a while. I intend to clean the area up more with more soap/water every day for the next few days.
What else can I do? I am worried it will soak into the carpet and I won’t be able to clean it out.
Well, I’m kinda the wrong person to ask, as to me that’s not much of a solvent spill and might even be an amount used to clean my fume hood or lab bench. I’d say you already did far more than is needed and don’t need to leave the windows open, drive a different car, or keep cleaning. The stuff has a boiling point of 150 F and generally evaporates faster than water. If you pulled the mat, soaked up most of it, and cleaned the rest with water you should be fine.
Methanol isn’t deadly. On a toxicity scale from 1 to 10 I’d rate it at about a 3 where ethanol is 2 and cyanide is 8. They can put it in a breakable container because they know that if you were to do nothing at all, problems wouldnt be likely. It’s hard to imagine how one would turn this into a poisoning without doing something deliberate like sucking it out of the mat.
Well the vapor pressure of methanol is significantly less than that of water. The boiling point of methanol is approximately 65°C. So obviously the stuff isn’t going to boil off, but it should evaporate fairly readily on its own.
Keep in mind that I’m a chemist and I work with open containers of methanol all the time, outside of a hood and it’s not much of a concern. Well, I’m not blind yet, that is.