---
kind: "section"
citation: "10 U.S.C. § 3551"
title: "10"
title_heading: "Armed Forces"
number: "3551"
heading: "Multiyear procurement authority: purchase of dinitrogen tetroxide, hydrazine, and hydrazine-related products"
release: "119-102"
date: "2026-07-12"
url: "https://uscodex.org/usc/10/3551"
units:
  - "Subtitle A — General Military Law"
  - "Part V — Acquisition"
  - "Subpart C — Contracting Methods and Contract Types"
  - "Chapter 249 — Multiyear Contracts"
  - "Subchapter III — Other Authorities Relating to Multiyear Contracts"
---

# §3551. Multiyear procurement authority: purchase of dinitrogen tetroxide, hydrazine, and hydrazine-related products

- (a) **Ten-Year Contract Period.—** The [Secretary](/usc/10/4951.md?p=3) of Defense may enter into a contract for a period of up to 10 years for the purchase of dinitrogen tetroxide, hydrazine, and hydrazine-related products for the support of a [United States](/usc/10/101.md?p=a-1) [national security](/usc/10/801.md?p=16) [program](/usc/10/2101.md?p=1) or a [United States](/usc/10/101.md?p=a-1) space [program](/usc/10/2101.md?p=1).
- (b) **Extensions.—** A contract entered into for more than one year under the authority of [subsection (a)](#a) may be extended for a total of not more than 10 years pursuant to any option or options set forth in the contract.

## Source credit

(Added Pub. L. 107–314, div. A, title VIII, § 826(a), Dec. 2, 2002, 116 Stat. 2617, § 2410o; renumbered § 3551, Pub. L. 116–283, div. A, title XVIII, § 1822(e)(2), formerly § 1822(t)(2), Jan. 1, 2021, 134 Stat. 4205, renumbered Pub. L. 117–81, div. A, title XVII, § 1701(k)(4), Dec. 27, 2021, 135 Stat. 2144.)

## Notes

### Editorial Notes

### Amendments

2021—Pub. L. 116–283 renumbered section 2410o of this title as this section.

### Statutory Notes and Related Subsidiaries

### Effective Date of 2021 Amendment

Amendment by Pub. L. 117–81 applicable as if included in the enactment of title XVIII of Pub. L. 116–283 as enacted, see section 1701(a)(2) of Pub. L. 117–81, set out in a note preceding section 3001 of this title and note below.

Amendment by Pub. L. 116–283 effective Jan. 1, 2022, with additional provisions for delayed implementation and applicability of existing law, see section 1801(d) of Pub. L. 116–283, set out as a note preceding section 3001 of this title.