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Interpretation Response #98-0408 ([ALM Safety Associates] [Mr. Allen L. Mossman])

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

Interpretation Response Details

Response Publish Date:

Company Name: ALM Safety Associates

Individual Name: Mr. Allen L. Mossman

Location State: NY Country: US

View the Interpretation Document

Response text:

MAY 15, 1998

 

Mr. Allen L. Mossman
ALM Safety Associates
65 Sarazen Street
Saratoga Springs, NY 12866-8719

Dear Mr. Mossman:

This is in response to your letter regarding the proper shipping name for mixtures containing oxygen under the Hazardous Materials Regulations (HMR; 49 Parts 171-180). You requested information explaining what concentration of oxygen in a gas mixture meets the oxidizing gas definition.

RSP A has determined that concentrations of oxygen greater than 23.5 % cause or contribute to the combustion of other material more than air does, and therefore meet the definition of oxidizing gas in § 171.8. RSPA will consider referencing Special Provision 77 for rare gases and oxygen mixtures containing more than 23.5% oxygen in a future rulemaking. This issue will be addressed at the next meeting of the United Nations Committee of Experts on the Transport of Dangerous Goods.

I hope this answers your inquiry. If we can be of further assistance, please do not hesitate to contact us.

Sincerely,

 

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

172.102

Regulation Sections

Section Subject
172.102 Special provisions