You also mentioned in a prior post that you didn't think it caused cancer. Au contraire mon ami! Be careful with that stuff.
From our friends at
OSHA.
Toxic effects of 2-nitropropane
Exposure to concentrations of 2-nitropropane on the order of 20 to 45 ppm are reported to cause nausea, vomiting, diarrhea, loss of appetite, and severe headaches in humans. (Ref. 5.4.) Concentrations of 165 to 445 ppm, cause nausea, dizziness, headaches, and diarrhea in humans (Ref. 5.5.). Cats, which died within 17 days of exposure to 328 ppm 2-nitropropane, sustained severe liver damage (Ref. 5.6.). Liver damage attributed to high concentrations of 2-nitropropane in humans has been reported (Ref. 5.7.). Liver cancer was found in rats exposed to 207 ppm 2-nitropropane for 6 months (Ref. 5.8.). These data raise the question of carcinogenic effects in humans. While additional studies are in progress, NIOSH believes it would be prudent to handle 2-nitropropane as if it were a human carcinogen (Ref. 5.8.).