YT2095
International Hazard
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NaNO3 (NO2)
I`ve looked up NaNO3 in my book and the decop temp is marked as 653k
now IIRC it`s supposed to decomp to NaNO2, but THAT decop temp is marked as 593k !?
is my book in error again (there`s been 4 so I`ve had to correct).
\"In a world full of wonders mankind has managed to invent boredom\" - Death
Twinkies don\'t have a shelf life. They have a half-life! -Caine (a friend of mine)
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hodges
National Hazard
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I see 320C for NaNO2 and 380C for NaNO3 in my CRC handbook. Those are the same numbers, but they still could both be in error I guess if two books
got them from the same place.
Hodges
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bereal511
Hazard to Others
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That would be an impressive error, because I get the same numbers for their corresponding decomposition points across the internet. Seems a bit
strange.
As an adolescent I aspired to lasting fame, I craved factual certainty, and I thirsted for a meaningful vision of human life -- so I became a
scientist. This is like becoming an archbishop so you can meet girls.
-- Matt Cartmill
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Rosco Bodine
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http://www.ussaltllc.com/sntechbulletin.htm
Thermal decomposition of pure sodium nitrite does not occur at an appreciable rate below 600C (1112F). In air, a barely detectable exotherm is
observed in the range of 370-440C (698-824F) when heated very, very slowly. This probably indicates oxidation to the nitrate.
In a nitrogen atmosphere, decomposition becomes detectable at 490-500C (914-932F). The rate of decomposition increases with temperature and is
complete at 920C (1688F). Sodium oxide remains after the decomposition.*
*E.S. Freeman, J. Phys. Chem., 60, 1487 (1956).
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