Top Chemicals Produced in U.S. in 2004
thousands of metric tons  
http://pubs.acs.org/cen/coverstory/83/pdf/8328production.pdf
1 sulfuric acid 35954
2 nitrogen 30543
3 ethylene 25682
4 oxygen 25568
5 propylene 15345
6 chlorine 12166
7 ethylene dichloride 12163
8 phosphoric acid 11463
9 ammonia 10762
10 sodium hydroxide 9508
11 benzene 7675
12 nitric acid 6703
13 ammonium nitrate 6021
14 ethylbenzene 5779
15 urea 5755
16 styrene 5394
17 hydrochloric acid 5012
18 ethylene oxide 3772
19 cumene 3736
20 ammonium sulfate 2643
21 1,3-butadiene 2204
22 acrylonitrile 1598
23 hydrogen 1448
24 vinyl acetate 1431
25 titanium dioxide* 1400
26 aluminum sulfate 922
27 aniline 813
28 sodium chlorate 658
29 sodium sulfate 473
* estimated based on 2001 data in: 
http://pubs.acs.org/cen/coverstory/8025/pdf/8025production.pdf  

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