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Interpretation Response #09-0024 ([Lia BD Consulting] [Barry Lia, Ph.D.])

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

Interpretation Response Details

Response Publish Date:

Company Name: Lia BD Consulting

Individual Name: Barry Lia, Ph.D.

Location State: WA Country: US

View the Interpretation Document

Response text:

February 13, 2009


Barry Lia, Ph.D.

Lia BD Consulting

9314 40th Ave. N.E.

Seattle, WA 98115

Reference No. 09-0024

Dear Dr. Lia:

This is in response to your e-mail requesting clarification of the Hazardous Materials Regulations (HMR; 49 CFR Parts 171-180) regarding applicability to aqueous solutions of silver nitrate and iron sulfate. Specifically, you ask us to confirm that an aqueous solution of 0.25 % silver nitrate (0.015 M) and an aqueous solution of 0.25 % iron sulfate (0.008 M) in containers not more than 100 milliliters each do not meet the criteria for a hazardous material under the HMR.

Your understanding is correct. The concentration of the quantity of material per inner container, as described in your e-mail, does not meet the criteria for a hazardous material under the HMR and, therefore, is not subject to the HMR.

I hope this information is helpful. Please contact this office if you have additional questions.


Hattie L. Mitchell

Chief, Regulatory Review and Reinvention

Office of Hazardous Materials Standards

172.101, 175.10

Regulation Sections

Section Subject
172.101 Purpose and use of hazardous materials table
175.10 Exceptions for passengers, crewmembers, and air operators