In reply to Axil Axil's message of Sun, 12 May 2019 03:39:08 -0400: Hi, [snip]
1) It may be Fe3(CO)12, a solid in the form of micro-crystals, rather than iron pentacarbonyl. 2) They didn't even know it was present, hence were hardly in a position to warn anyone. >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 >> >> Regards, Robin van Spaandonk local asymmetry = temporary success
