Exhibit 3.1

AMENDED AND RESTATED

CERTIFICATE OF INCORPORATION

OF

AMERICAN PACIFIC CORPORATION

1. Name. The name of the Corporation is American Pacific Corporation (the “Corporation”).

2. Registered Office. The registered office of the Corporation in the State of Delaware is located at 1209 Orange Street, Corporation Trust Center, in the City of Wilmington, County of New Castle, Zip Code 19801. The name of its registered agent at such address is The Corporation Trust Company.

3. Purpose. The purpose of the Corporation is to engage in any lawful act or activity for which corporations may be organized under the General Corporation Law of the State of Delaware (the “DGCL”).

4. Capital Stock. The total number of shares of stock that the Corporation shall have authority to issue is 1,000 shares of common stock, $0.001 par value per share (“Common Stock”). Each share of Common Stock shall be entitled to one vote.

5. Except as otherwise provided in the provisions establishing a class of stock, the number of authorized shares of any class or series of stock may be increased or decreased (but not below the number of shares thereof then outstanding) by the affirmative vote of the holders of a majority of the voting power of the Corporation entitled to vote irrespective of the provisions of Section 242(b)(2) of the DGCL.

6. The business and affairs of the Corporation shall be managed by or under the direction of the Board of Directors. The size of the Board of Directors shall be determined as set forth in the by-laws of the Corporation, as in effect from time to time (the “By-laws”). The election of directors need not be by written ballot unless the By-laws shall so require.

7. In furtherance and not in limitation of the power conferred upon the Board of Directors by law, the Board of Directors shall have power to make, adopt, alter, amend and repeal from time to time the By-laws of the Corporation, subject to the right of the stockholders entitled to vote with respect thereto to alter and repeal by-laws made by the Board of Directors.

8. A director of the Corporation shall not be liable to the Corporation or its stockholders for monetary damages for breach of fiduciary duty as a director, except to the extent that exculpation from liability is not permitted under the DGCL as in effect at the time such liability is determined. No amendment or repeal of this Paragraph 8 shall apply to or have any effect on the liability or alleged liability of any director of the Corporation for or with respect to any acts or omissions of such director occurring prior to such amendment or repeal.

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9. (a) The Corporation shall, to the maximum extent permitted from time to time under the law of the State of Delaware, indemnify any person who is or was a party or is threatened to be made a party to any threatened, pending or completed action, suit, proceeding or claim, whether civil, criminal, administrative or investigative, (i) by reason of the fact that such person is or was a director or is or was serving at the express or implied request of the Corporation as a director of another corporation, partnership, joint venture, trust or other enterprise, including service with respect to employee benefit plans or (ii) in such person’s capacity as an officer, employee or agent of the Corporation or in such person’s capacity as an officer, employee or agent of another corporation, partnership, joint venture, trust or other enterprise, including service with respect to employee benefit plans, that such person is or was serving at the express or implied request of the Corporation (each such person described in the foregoing clauses (i) and (ii), a “Covered Person”), against expenses (including attorney’s fees and expenses), judgments, fines, penalties and amounts paid in settlement incurred (and not otherwise recovered) in connection with the investigation, preparation to defend or defense of such action, suit, proceeding or claim. Such indemnification shall not be exclusive of other indemnification rights arising under any statute, certificate or articles of incorporation, by-law, agreement, vote of directors or stockholders or otherwise, both as to action in such Covered Person’s official capacity and as to action in another capacity at the express or implied request of the Corporation while holding such position. Any and all rights of any person hereunder shall continue as to a person who has ceased to be a Covered Person and shall inure to the benefit of the heirs, executors and legal representatives of such person. Any person seeking indemnification under this Paragraph 9 shall be deemed to have met the standard of conduct required for such indemnification unless the contrary shall be established. Any repeal or modification of the foregoing provisions of this Paragraph 9 shall not adversely affect any right or protection of a Covered Person with respect to any acts or omissions of such Covered Person occurring prior to such repeal or modification.

(b) The Corporation shall pay on a current and as-incurred basis expenses incurred by any Covered Person in defending or otherwise participating in any action, suit, proceeding or claim referred to in Paragraph 9(a) in advance of the final disposition of such action, suit, proceeding or claim, including appeals, upon presentation of (i) an unsecured written undertaking to repay such amounts if it is ultimately determined that the person is not entitled to indemnification hereunder and (ii) adequate documentation reflecting such expenses.

(c) It is the intent that with respect to all advancement and indemnification obligations under this Paragraph 9, the Corporation shall be the primary source of advancement, reimbursement and indemnification relative to any direct or indirect shareholder of the Corporation (or any affiliate of such shareholder, other than the Corporation or any of its direct or indirect subsidiaries). The Corporation shall have no right to seek contribution, indemnity or other reimbursement for any of its obligations under this Paragraph 9 from any such direct or indirect shareholder of the Corporation (or any affiliate of such shareholder, other than the Corporation or any of its direct or indirect subsidiaries).

(d) The Corporation shall have the power to purchase and maintain, at its expense, insurance on behalf of any person who is or was a Covered Person, against any expense, liability

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or loss asserted against such person and incurred by such person in any such capacity, or arising out of such person’s status as such, whether or not the Corporation would have the power to indemnify such person against such expense, liability or loss under the DGCL or the terms of this Certificate of Incorporation.

10. To the maximum extent permitted from time to time under the law of the State of Delaware, the Corporation renounces any interest or expectancy of the Corporation in, or in being offered an opportunity to participate in, business opportunities that are from time to time presented to its officers, directors or stockholders, other than those officers, directors or stockholders who are employees of the Corporation. No amendment or repeal of this paragraph shall apply to or have any effect on the liability or alleged liability of any officer, director or stockholder of the Corporation for or with respect to any opportunities of which such officer, director or stockholder becomes aware prior to such amendment or repeal. To the fullest extent permitted by law, any Person purchasing or otherwise acquiring any interest in any shares of capital stock of the Corporation shall be deemed to have notice of and to have consented to the provisions of this paragraph. As used herein, “Person” shall mean any individual, corporation, general or limited partnership, limited liability company, joint venture, trust association or any other entity.

11. The books of the Corporation may (subject to any statutory requirements) be kept outside the State of Delaware as may be designated by the board of directors or in the by-laws of the Corporation.

12. If at any time the Corporation shall have a class of stock registered pursuant to the provisions of the Securities Exchange Act of 1934, for so long as such class is so registered, any action by the stockholders of such class must be taken at an annual or special meeting of stockholders and may not be taken by written consent.

13. The Corporation shall not be governed by Section 203 of the DGCL.

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