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Letter Of Correspondence

 July 15, 2005

 Delivered as Correspondence File by EDGAR

 U.S. Securities and Exchange Commission

 Division of Corporation Finance

 450 Fifth Street, N.W.

 Washington, D.C. 20549

Attn:
Rufus Decker, Branch Chief

 Mail Stop 0510

Re:
Rentech, Inc.

 Form 10-K for Fiscal Year ended September
30, 2004

 Form 10-Q for Fiscal Quarters ended December 31, 2004 and March 31, 2005

 File No. 0-19260

 Ladies and Gentlemen:

 I am responding on behalf of Rentech, Inc. to the comments of the staff in your letter of July 5, 2005.

 FORM 10-Q FOR THE QUARTER ENDED MARCH 31, 2005

 Consolidated Statement of Cash flows, page 7

1.
We revised the operating cash flow provided by the change in accounts payable from $1,575,787 in our originally filed Form 10-Q to $544,614 in the amended Form 10-Q/A due to certain
acquisition costs, debt issue costs and offering costs that were non-cash transactions. We re-classified the following amounts to the non-cash investing and financing section shown below the Consolidated Statements of Cash Flows:

 Deferred acquisition costs in accounts payable

$
598,654

 Debt issue costs in accounts payable

$
326,846

 Deferred offering costs in accounts payable

$
105,673

 Total adjustment to change in accounts payable

$
1,031,173

 U.S. Securities and Exchange Commission

 July 15, 2005

 Page 2

 These amounts were included in the Deposits and Other Assets line item under cash flows from investing activities in our originally filed Form 10-Q. These
amounts were re-classified from Deposits and Other Assets to a reduction in the change in accounts payable in the amended Form 10-Q/A, and these amounts are now shown as non-cash investing and financing activity.

2.
We have revised the amended Form 10-Q to label the statement of cash flows as restated and we have included an explanatory note describing the restatement and the nature of the
errors. Please refer to our amended Form 10-Q/A as of March 31, 2005, our amended Form 10-Q/A2 as of December 31, 2004 and our amended Form 10-K/A2 as of September 30, 2004. We have re-classified all prior periods to conform to the current period
presentation.

3.
We have presented non-cash interest expense and other non-cash expenses as investing cash flows in our prior filings. To conform with SFAS 95, we have made adjustments to the
statements of cash flows and we have amended our March 31, 2005 Form 10-Q, our December 31, 2004 Form 10-Q and our September 30, 2004 Form 10-K. With these amendments, we believe our statements of cash flows are presented in accordance with SFAS 95.
For the line item, Deposits and Other Assets, we are providing the following detailed information for the past three fiscal years ending September 30th and the three and six months ending December 31st and March 31st for the past two fiscal years, as amended:

 Six months ended March 31, 2005

 Deposits and other assets (as amended)

$
(45,333
)

 Lease deposits

$
(3,460
)

 Return deposit

$
1,127

 Benefit deposit

$
(43,000
)

$
(45,333
)

 Three months ended December 31, 2004

 Deposits and other assets (as amended)

$
(2,500
)

 Lease deposits

$
(2,500
)

 U.S. Securities and Exchange Commission

 July 15, 2005

 Page 3

 Fiscal year ended September 30, 2004

 Deposits and other assets (as amended)

$
15,657

 Lease deposits

$
(4,144
)

 Return of deposits

$
19,801

$
15,657

 Six months ended March 31, 2004

 Deposits and other assets (as amended)

$
17,962

 Lease deposits

$
(1,252
)

 Return of deposits

$
19,214

$
17,962

 Three months ended December 31, 2003

 Deposits and other assets (as amended)

$
18,197

 Lease deposits

$
(768
)

 Return of deposits

$
18,965

$
18,197

 Fiscal year ended September 30, 2003

 Deposits and other assets (as amended)

$
(46,747
)

 Lease deposits

$
(20,273
)

 Payment of lease commission

$
(26,474
)

$
(46,474
)

 Fiscal year ended September 30, 2002

 Deposits and other assets (as amended)

$
235

 Return of lease deposits

$
235

4.
Please refer to our response in #3 to see that the Deposit and Other Asset line item, as amended, does not reflect debt issue costs as investing activities. The restated statements
of cash flows in our Form 10-K/A2 properly reflect debt issue costs as financing cash flows in accordance with EITF 95-13 for fiscal year 2003 and 2002.

 U.S. Securities and Exchange Commission

 July 15, 2005

 Page 4

 We plan to request an accelerated effective date of our registration statement number 333-125162 as of July 22, 2005. Of course we recognize that all issues you have
raised in your comment letter dated July 5, 2005 must be resolved before the effective date.

 Thank you for your anticipated cooperation and timely response. We will call you in the next few days to discuss any questions or concerns you may have.

Sincerely,

RENTECH, INC.

By:

 /s/ Geoffrey S. Flagg

Geoffrey S. Flagg

Chief Financial Officer