# TEN E Packaging — Hazardous Materials Safety Interpretation

**Citation:** 98-0350  
**Type / status:** guidance / guidance  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 1999-07-29

98-0350 response to TEN E Packaging concerning 173.306.

## Document text

<<<PAGE 1>>>

US. 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
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1509002:
phone

## Provenance

- Official: Yes
- Source: <https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/1998/980350.pdf>
- Source ID: `phmsa`
- SHA-256: `b467884fb14f1ec6fbd6d108f614c4147e1f2514ad196ec86e720a62a809687b`
- Retrieved: 2026-08-20T00:59:31.977Z
- Exported: 2026-08-23T09:10:57.519Z
- Document slug: `phmsa-interpretation-98-0350`

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```