Nitrobenzenes taste

PROP Colorless to yellow liquid sweet burning taste sensidve to shock. Mp 13°, bp explodes 218°, d 1.599 15°/15°, vap press 1 mm 127°, vap d 7.84, autoign temp 518°F, decomp 50-60°, fp 13°. Volatile 100°. Misc with ether, acetone, glacial acedc acid, ethyl acetate, benzene, nitrobenzene, pyridine, chloroform, ethylene bromide, dichloroethylene sidy sol in pet ether, glycerin. Misc in most org solvs prac insol in H2O. IDLH 75 mg/m. ... 

Exposure Levels in Humans. There is very little information on human exposure to nitrobenzene outside of the workplace. More detailed exposure analyses that take transformation pathways into account need to be performed for local sites and the potentially impacted populations. Further, it would be useful to know more about the relationship of the organoleptic properties of nitrobenzene with respect to tolerable exposures. For example, it would be useful to know whether its taste and aroma are deterents to high levels of human exposure. 

Benzenamine, phenylamine, aminobenzene, aminophen, kyanol. Oily liquid, colourless when fresh, darkening on exposure to air and light, characteristic smell and burning taste bp 184-186°C volatile with steam. Absorbed by oral, dermal or inhalation routes. 1 g can be fatal aniline and nitrobenzene produce methaemoglobin. Slate blue-brown skin. CNS anoxia. Renal tubular necrosis, hepatic necrosis. Haemolytic in large doses. 

Berzelius, in reporting the work, thought Mitscherlich s formula for nitrobenzene, C H N 0, was improbable, since it is difficult to understand why a coihpoimd containing so much oxygen is indifferent towards alkalis. Since the sweet taste points to the composition of an ethereal liquid [an ester], it may be regarded as an ethereal compound of nitrous acid with the oxide of benzide, + N 0 , comparable with ethyl nitrite C H 0 + N 0 . Benzene-sulpl onic acid, Mitscherlich s benzin-schwefelsaure, Berzelius found was present in its salts as + S 0 , a compound of i atom of benzide and i of... 

Changes in odour and taste are frequently more irksome than minor health disorders. Industrial odour immissions by toluene, xylenes and styrene have been referred to earlier [42]. Odours from combustion processes, such as for example from diesel fuels, are unpleasant. Comparative odour threshold values have been given for benzene of 4.7 ppm, for toluene of 2.1 ppm, for xylene of 0.5 ppm, for chlorobenzene of 0.2 ppm, for styrene of 0.05 ppm, and for nitrobenzene of 0.005 ppm [11]. Slightly lower odour thresholds are reported by other scientists 0.9-1.6 ppm for benzene, 0.03-0.5 ppm for toluene, and 0.15-0.18 ppm for xylene [12]. In water, quantities higher than 6.8 mg/m naphthalene, 37 mg/m styrene and 140 mg/m ethylbenzene cause unpleasant odours [13]. The following compounds may cause... 

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