Cyclohexylamine - safety measures 2

[maiweb]

Can anyone give me more specific information about the hazards with cyclohexylamine? Specifically I would like to know about the safety measures for preventing explosion risks and human protection.

With a small vessel, containing apr. 2 cbm of Cyclohexylamine and only a small dosing pump and some 30 m piping, what should one consider?

 

[kenvlach]

First, read the MSDS:

https://fscimage.fishersci.com/msds/97156.htm

Second, what concentration are you dealing with?
Obviously, more safety precautions are necessary for higher concentrations. Due to OSHA & EPA and UFC (fire code) requirements, you may need secondary containment, ventilation, a sprinkler system, emergency spill equipment & PPE (personal protective equipment). However, on the EPA's 'List of Lists,' the RQs for cyclohexylamine, CAS# 108-91-8, are 10,000 and 15,000 pounds, and you are far below this (so you are not considered a major threat).

http://www.epa.gov/ceppo/pubs/title3.pdf

In any case, you should discuss this with your local regulatory agencies.

From the MSDS, the vapor is heavier than air and has an explosive range 1.5 to 9.5%, and the TWA is only 10 ppm, so good ventilation and PPE are probably the very minimum requirements.

 

[25362]

I propose you pay a visit to

http://www.jtbaker.com/msds/englishhtml/c7117.htm

Besides, it's good to remember that the flash point in air is 28.5[sup]o[/sup]C, and toxic nitrogen oxides are produced on an exothermic and rapid combustion reaction.

 

[JOM]

Is cyclohexylamine similar to hydroxylamine?

There have been two terrible explosions involving hydroxylamine iver the last few years. It seems to be a very unstable chemical. Cheers,
John.

 

[25362]

My chemical source says that hydroxylamine is quite unstable, it decomposes violently on heating on air in the presence of humidity and CO[sub]2[/sub] and explodes at above 70[sup]o[/sup]C. In its pure state it is kept below 0[sup]o[/sup]C, for safety reasons. It is mostly found in solutions or as salts.