| LSB Industries, Inc.                                                                                                                                                                                                       |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Unaudited Computation of Ratios of Earnings to Fixed Charges and Combined Fixed Charges and Preferred Stock Dividends                                                                                                      |
| (Dollars in thousands)                                                                                                                                                                                                     |
|                                                                                                                                                                                                                       |   |   |   |   |   |   |   |   |   |   |
|                                                                                                                                                                                                                       |   | 2006 | 2007 | 2008 | 2009 | 2010 |   |   |   |   |
| Income from continuing operations before provisions for income taxes and equity in earnings of affiliate                                                                                                                   |  $     15,848 |   $     48,197 |   $     54,399 |   $     35,877 |  $   48,499 |   |    |
| Add:                                                                                                                                                                                                                       |   |   |   |   |   |   |   |   |   |   |
|     Fixed charges                                                                                                                                                                                      |   |         15,971 |         15,674 |         12,042 |           8,001 |        7,220 |   |   |   |
|     Share of distributed income of 50% owned affiliate                                                                                                                                                 | 875 |              765 |              735 |              785 |           825 |   |   |
| Adjusted Earnings                                                                                                                                                                                                          |   |  $     32,694 |  $     64,636 |  $     67,176 |  $     44,663 |  $   56,544 |   |   |   |   |
|                                                                                                                                                                                                                       |   |   |   |   |   |   |   |   |   |   |
| Fixed Charges:                                                                                                                                                                                                             |   |   |   |   |   |   |   |   |   |   |
|    Interest expense  (1)                                                                                                                                                                          |   |  $     12,028 |  $     11,723 |  $       8,510 |  $       6,016 |  $     5,900 |   |   |
|    Estimate of interest in rental expense                                                                                                                                                                   |           3,943 |           3,951 |           3,532 |           1,985 |        1,320 |   |   |
| Fixed Charges                                                                                                                                                                                                              |   |  $     15,971 |  $     15,674 |  $     12,042 |  $       8,001 |  $     7,220 |   |   |   |   |
|                                                                                                                                                                                                                       |   |   |   |   |   |   |   |   |   |   |
| Preferred stock dividends:                                                                                                                                                                                                 |   |           2,783 |           5,912 |              463 |              519 |           511 |   |   |   |   |
| Combined fixed charges and preferred stock dividends                                                                                                                                                                       |  $     18,754 |  $     21,586 |  $     12,505 |  $       8,520 |  $     7,731 |   |   |   |   |
|                                                                                                                                                                                                                       |   |   |   |   |   |   |   |   |   |   |
|                                                                                                                                                                                                                       |   |   |   |   |   |   |   |   |   |   |
| Ratio of earnings to fixed charges                                                                                                                                                                                         |   |           2.0 |           4.1 |           5.6 |           5.6 |        7.8 |   |   |   |   |
|                                                                                                                                                                                                                       |   |   |   |   |   |   |   |   |   |   |
| Ratio of earnings to combined fixed charges and preferred stock dividends                                                                                                                                                  |           1.7 |           3.0 |           5.4 |           5.2 |        7.3 |   |   |   |   |
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| (1)    Interest expense includes amortization of deferred debt issuance costs and excludes realized and unrealized gains or losses on interest rate financial instruments that are reported as interest expense. |   |   |
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