The whole story from Wikipedia::
Nitrobenzene is highly toxic (
Threshold Limit Value 5 mg/m3) and readily absorbed through the skin.
Prolonged exposure may cause serious damage to the central
nervous system, impair vision, cause liver or kidney damage, anemia and lung irritation. Inhalation of vapors may induce headache, nausea, fatigue, dizziness,
cyanosis, weakness in the arms and legs, and in rare cases may be fatal. The oil is readily absorbed through the skin and may increase heart rate, cause convulsions or rarely death. Ingestion may similarly cause headaches, dizziness, nausea, vomiting and gastrointestinal irritation, loss of sensation/use in limbs and also causes internal bleeding.
[6]
Nitrobenzene is considered a likely human carcinogen by the United States Environmental Protection Agency,
[8] and is classified by the
IARC as a
Group 2B carcinogen which is "possibly carcinogenic to humans".
[9] It has been shown to cause liver, kidney, and thyroid adenomas and carcinomas in rats.
[10]
It is classified as an
extremely hazardous substance in the United States as defined in Section 302 of the U.S.
Emergency Planning and Community Right-to-Know Act (42 U.S.C. 11002), and is subject to strict reporting requirements by facilities which produce, store, or use it in significant quantities.
[11]
If you are going to use this stuff, let others know so we can leave the area. Not so much for me, but I sure don't want my son or pregnant daughter or granddaughter breathing this stuff!!!