---
kind: "section"
citation: "40 C.F.R. § 1090.250"
title: "40"
number: "1090.250"
heading: "Certified butane standards."
url: "https://uscodex.org/cfr/40/1090.250"
---

# §1090.250. Certified butane standards.


Butane designated as certified butane under [§ 1090.1000(e)](/cfr/40/1090.1000.md?p=e) for use under the butane blending provisions of [§ 1090.1320(b)](/cfr/40/1090.1320.md?p=b) must meet the following per-gallon standards:

- (a) **Butane content.** Minimum 85 volume percent.
- (b) **Benzene content.** Maximum 0.03 volume percent.
- (c) **Sulfur content.** Maximum 10 ppm.
- (d) **Chemical composition.** Be composed solely of carbon, hydrogen, oxygen, nitrogen, and sulfur.

## Notes

### Authority

Authority: 42 U.S.C. 7414, 7521, 7522-7525, 7541, 7542, 7543, 7545, 7547, 7550, and 7601.

### Source

Source: 85 FR 78469, Dec. 4, 2020, unless otherwise noted.