Determining Weights of Products in Bullet Tanks

[pipeENGR]

I am trying to determine if my bullet tanks falls under Risk Management Plan for 40 cfr 68-Chemical Accident Prevention. I have the production in gallons for each of the chemicals (meth,eth,prop,iso-but,normal but,iso-pent and normal pent). If the weight of these combined is >10,000 lbs then we must comply. I am assuming the weight for the tank is >10,000 lbs but I have to input the weight into the EPA's program seperatly for each hydrocarbon. I can't calculate the weights for each one without the density. I have found some densities, but they are all at STP and not our normal operating conditions. If anyone has done this before or has any insight, I would greatly appreciate it. Thanks.

 

[25362]

Physical properties can be found in

http://webbook.nist.gov/chemistry/

 

[pipeENGR]

thank you for the website. It gave me all the densities I needed for the pressure and temp of my vessel. Thanks for your help.