Guidanceguidance
98-0350
TEN E Packaging — Hazardous Materials Safety Interpretation
Current as of source date Government source
RegulusPipeline researchRegulusPipeline research98-0350
Page 1US. Department of Transportation Washington. D.C. 400 Seventh Street, S.W. 20590 Special Programs Research and Administration JUL 2 9 1999 Mr. Robert J. Ten Eyck TEN E Packaging Ref. No: 98-0350 1666 County Road 74 Newport, MN 55055 Dear Mr. Ten Eyck: This is in response to your letter dated November 23, 1998 regarding the use of the hot water bath for aerosol products in 49 CFR 173.306 (a) (3) (v). As provided by § 173.306 (a) (3) (v), each container must be subjected to a test performed in a hot water bath. The : temperature of the bath and the duration of the test must be such that the internal pressure reaches that which would be reached at 55 °C or 50 °C if the liquid phase does not exceed 95% of the capacity of the container at 50 °C. We would view either water bath temperature as acceptable. I hope this satisfies your request. Sincerely, Thomas - I. Cellar Thomas G. Allan Senior Transportation Regulations Specialist Office of Hazardous Materials Standards 980350 173.306#
Page 2* 1/23/98 14:57 FAX 612 459 1430 TEN-E PACKAGING Ø001 TENOE $173.306 Setting the standard 09-0350 November 23, 1998 Edward Mazzullo Office of Hazardous Materials Standards DHM-10 U.S. DEPARTMENT OF TRANSPORTATION Research and Special Programs Administration 400 Seventh Street S.W. Washington, DC 20590 Dear Ed: I am writing to request an interpretation on the use of the hot water bath for aerosol products found in Section 173.306(a)(3)(v) of Title 49 CFR. We would like the agency's confirmation that it views the 55° C or 50° C water bath temperatures as equivalent in screening cans for proper filling and assembly. We would also like to know why the 50° C temperature condition ties the aerosol can's liquid phase to a maximum capacity of 95% but the 55° C temperature condition has no maximum capacity requirement. Your input on this regulatory matter is greatly appreciated. Sincerely, No resconse to Hes necessay, per Mr. Ten Eyck. Еуск Directer, Technical Services 1779. TEN-E Pashaging Services Inc 1666 County B0ad 14 Neaport, Manesolo S50sf emall:info@ren-e.coa web:woaten-e.com $51 4 5 9 {SI 14 5 9 1 4 1 0 ISO 9002 1509002: phone#
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