Regulations last checked for updates: May 14, 2024

Title 40 - Protection of Environment last revised: May 10, 2024
§ 1090.250 - Certified butane standards.

Butane designated as certified butane under § 1090.1000(e) for use under the butane blending provisions of § 1090.1320(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.

source: 85 FR 78469, Dec. 4, 2020, unless otherwise noted.
cite as: 40 CFR 1090.250