Interpretation Response #98-0560 ([Spectra Gases, Inc.] [Mr. William Miller])

Below is the interpretation response detail and a list of regulations sections applicable to this response.

Interpretation Response Details

Response Publish Date: 03/10/1998

Company Name: Spectra Gases, Inc.

Individual Name: Mr. William Miller

Country: US

View the Interpretation Document

Response text:

MAR 10, 1998

Mr. William Miller
Manager-Environmental Gases
Spectra Gases, Inc.
80 Industrial Drive
Alpha, NJ 08865

Dear Mr. Miller:

This is in response to your letter dated February 10, 1998, regarding packaging dilute mixtures of hydrogen chloride (HCI), anhydrous, chlorine (CI:J, anhydrous, and hydrogen flouride (HF), anhydrous With nitrogen, in a DOT-39 aluminum cylinder under the Hazardous Materials Regulations (HMR; 49 CFR Parts 71-180). Specifically, you ask whether it is permissible to fill mixtures of C12, HCI and HF at concentrations of 300 ppm or less and at pressures of 500 to 1,000 p.s.i.g., with balance nitrogen, in DOT-39 aluminum cylinders.

Based on your statement. that you have evidence that your dilute concentrations are not corrosive to aluminum, you may use a DOT-39 cylinder up to 500 p.s.i.g. Section 178.65(b)(2) states that an aluminum DOT-39 cylinder is not authorized for service pressures in excess of 500 p.s.i.g. However, you may apply for an exemption as provided in § 107.105 for use of a DOT-39 cylinder above 500 p.s.i.g.

I hope this answers your inquiry. If we can be of further assistance, please contact us.

Sincerely,

Delmer F. Billings
Chief, Standards Development
Office of Hazardous Materials Standards

Regulation Sections