Fe(CO)5 is toxic, which is of concern because of its volatility (vapour pressure: 21 millimetres of mercury (2.8 kPa) at 20 °C). If inhaled <https://en.wikipedia.org/wiki/Inhale>, iron pentacarbonyl may cause lung irritation, toxic pneumonitis <https://en.wikipedia.org/w/index.php?title=Toxic_pneumonitis&action=edit&redlink=1>, or pulmonary edema <https://en.wikipedia.org/wiki/Pulmonary_edema>. Like other metal carbonyls, Fe(CO)5 is flammable <https://en.wikipedia.org/wiki/Flammable>. It is, however, considerably less toxic than nickel tetracarbonyl <https://en.wikipedia.org/wiki/Nickel_tetracarbonyl>.
In regards to occupational exposures to iron pentacarbonyl, the National Institute for Occupational Safety and Health <https://en.wikipedia.org/wiki/National_Institute_for_Occupational_Safety_and_Health> has set a recommended exposure limit <https://en.wikipedia.org/wiki/Recommended_exposure_limit> at 0.1 ppm (0.23 mg/m3) over an eight-hour time-weighted average, and a short-term exposure limit <https://en.wikipedia.org/wiki/Short-term_exposure_limit> at 0.2 ppm (0.45 mg/m3).[14] <https://en.wikipedia.org/wiki/Iron_pentacarbonyl#cite_note-14> If Fe(CO)5 were present in the final product, the smelter would be required to warn the customer about its toxicity when handled, Remember, this iron pentacarbonyl is 25% of the product. On Sun, May 12, 2019 at 12:58 AM <mix...@bigpond.com> wrote: > In reply to Axil Axil's message of Sat, 11 May 2019 23:40:53 -0400: > Hi, > [snip] > >The ferrosilicon chemistry > > > >https://www.sciencedirect.com/topics/chemistry/silicon-monoxide > > > >as per its reference as follows: > > > >Production of Ferroalloys > ><https://www.sciencedirect.com/science/article/pii/B9780080969886000055> > > > >Rauf Hurman Eric, in Treatise on Process Metallurgy: Industrial Processes > ><https://www.sciencedirect.com/book/9780080969886>, 2014 > >1.10.4.7.2 Fundamental Aspects > > > [snip] > > > >Sorry, but the only chemically carbon bound compounds invoked with > >ferrosilicon > >chemistry is CO and SiC. > > Normally yes. However this may throw more light on the subject:- > > https://en.wikipedia.org/wiki/Metal_carbonyl > > & > > https://en.wikipedia.org/wiki/Triiron_dodecacarbonyl which is a solid. > > Regards, > > > Robin van Spaandonk > > local asymmetry = temporary success > >
