# American Dental Supply, Inc. — Hazardous Materials Safety Interpretation

**Citation:** 00-0368  
**Type / status:** guidance / guidance  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2001-01-19

00-0368 response to American Dental Supply, Inc. concerning 172.604.

## Document text

<<<PAGE 1>>>

U.S. Department
of Transportation
Washington, D.C. 20590
400 Seventh St., S.W.
Research and
Administration
special Programs
JAN 1 9 2001
Mr. Les Hochhauser
Reference No.: 00-0368
American Dental Supply, Inc.
2600 William Penn Highway
Easton, PA 18045
Dear Mr. Hochhauser:
This is in response to your December 15, 2000 letter regarding the emergency response telephone
number requirements under the Hazardous Materials Regulations (49 CFR Parts 171-180). You
asked whether a countrywide pager number meets the requirements for the emergency response
telephone number.
The answer is no. As required by § 172.604, the emergency response telephone number must be
onitored at all times the hazardous material is in transportation by a person who is eith
howledgeable of the characteristics of the hazardous material and has comprehensiv
emergency response information, or has immediate access to a person who possesses such
knowledge. Services that require a "call back" (e.g., answering service, answering machine or
pagers) are not acceptable and are not in compliance with the requirements in § 172.604.
I hope this satisfies your request.
Sincerely,
Hattie L. Mitchell
Chief, Regulatory Review and Reinvention
Office of Hazardous Materials Standards
000368
172,604

<<<PAGE 2>>>

Corbin
§172.604
Emergency Response
AMERICAN DENTAL SUPPLY, INC.
Telephone
2600 WILLIAM PENN HIGHWAY'
Number
EASTON, PA. 18045
610 252 1464
FAX 610 252 2822
00-0368
Dec. 15, 2000
J.S. Dept of Transportation RSP/
office of Hazardous Materials Standards (DHM-10
400 7th St. South West
Washington D.C. 20590-0001
Dear Edward T. Mazzullo, Director
We need your assistance with the hazardous materials regulations.
We sell a variety of chemical and ceramic materials to the dental
laboratory in small bottles. Most of the materials are non-hazardous but
a few do meet the Packing Group II definition. In the interest in
providing right-to-know data for our customers, we provide Safety Data
Sheets on the materials.
The sheets bear our company name and
address.
We also provide an emergency telephone number, in the
following fashion. During normal business hours, the phone number
given will contact a knowledgeable person in our office. After hours,
weekends and holidays a number is given that pages (countrywide) a
degreed chemist who is knowledgeable about all the products. Due to
our size as a company and the number of products, this approach is
satisfactory to our customers and we feel provides the necessary
protection and emergency contact.
DOT regulations in the most cost-effective manner for us. In the 25 plus
overs this in your files. Obviously, we want to be in compliance with
years we have been shipping merchandise, we have never had a spill of
emergency response personnel. Can you help us with this? Please feel
hazardous materials that resulted in a phone call from a carrier or
Hochhauser

## Provenance

- Official: Yes
- Source: <https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/2000/000368.pdf>
- Source ID: `phmsa`
- SHA-256: `20841c4fa0aefc83c42eabb7ad128e47f2bf98c8e059705f5db2401c6f61db66`
- Retrieved: 2026-08-20T00:59:31.977Z
- Exported: 2026-08-23T01:03:49.927Z
- Document slug: `phmsa-interpretation-00-0368`

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