# Kessler Chemical — Hazardous Materials Safety Interpretation

**Citation:** 01-0001  
**Type / status:** guidance / guidance  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2001-01-26

01-0001 response to Kessler Chemical concerning 173.150.

## Document text

<<<PAGE 1>>>

of Transportation
US. Department
400 Seventh Street. S.W.
Washington, D.C.
20590
JAN 2 6 2001
Mr. Gary J. Kessler
Ref. No. 01-0001
Marketing Director
Kessler Chemical
26 Brick Church Road
Pipersville, PA 18947
Dear Mr. Kessler:
This is in response to your letter dated January 3, 2001,
requesting clarification of provisions in § 173.150 (f) of the
Hazardous Materials Regulations (HMR; 49 CFR Parts 171-180) •
Specifically, you ask if your product,
p-chlorobenzotrifluoride, may be reclassed as a combustible
liquid.
Under § 173.150 (f), a flammable liquid with a flash point of
38°C (100°F) or higher that does not meet the definition of
ny other hazard class may be reclassed as a combustible
liquid.
Chlorobenzotrifluoride with
a flash point of 43°€
(109°F) that does not meet the definition of any other hazard
class may be reclassed as a combustible liquid. This
provision does not apply to transportation by vessel or
aircraft, except where other means of transportation is
impracticable (S 173.150 (f) (1)).
I hope this satisfies your request.
Sincerely,
Transportation Regulations Specialist
Office of Hazardous Materials
Standards
010001
173.150

<<<PAGE 2>>>

FrOM: GARY KESSLER TO: EDWARD T. MAZZULLO (BUSINESS FA
DATE: 1/8/01 TIME: 2:88:16 PM
PAGE 1 OF 1
BAH
KESSLER
Est50 Liquid
CHEMIGAL
OVER 25 YEARS
OF
0010367
DEDICATED
SERVICE
01-0001
26 Brick Church Road • Plpersvllle, Pennsylvania 18947, USA • (610) 847-8383 • Fax: (610) 847-8810
.... Email: Info@)kesslerchemical.com • Web: www.kesslerchemical.com
TELEFAX (PLEASE DELIVER ASAP)
NUMBER OF PAGES (INCLUDING THIS PG.):
1
DATE: January 3, 2001
Edward Mazzullo
TO:
OHMS
U.S. DOT/RSPA (DHM-10)
400 7th St., S.W.
Washington, DC 20590
Fax# (202) 366-3012
FROM: Gary J. Kessler
Dear Edward:
I spoke with Jerry at your Hazardous Material Information Center about getting a written clarification of a
provision under CFR Title 49, 173.150 (D.
Ib. (250 kg.) net drums, and 44,092 Ib. (20,000 kg.) net, bulk isotanks. This chemical is listed as a class 3
We will be shipping the chemical, p-chlorobenzotrifluoride (CAS# 98-56-6), by highway transportation in 551
substance, however it has a flash point of 43 deg. C. (109 deg. F.) It appears that under 173.150 (f, we can
eclassify the material for U.S. highway shipping purposes as a combustible liquid, since the flash point i
bove the stated threshold of 38 deg. C. (100 deg. F.), and it does not meet the definition of any other hazar
class. This provision seems straightforward, but it is our intent to be in full compliance with shipping
Thank you in advance for your attention to this matter. If you have any questions, please feel free to contact
me at (610) 758-9602.
Yours sincerely,
Marketing Director
Gary J. Kessler
gary@kesslerchemical.com

## Provenance

- Official: Yes
- Source: <https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/2001/010001.pdf>
- Source ID: `phmsa`
- SHA-256: `9ae131109c00bd9fe6ba853f1f00b3c734e43c0f8792620c6dfc516b192ed11b`
- Retrieved: 2026-08-20T00:59:31.977Z
- Exported: 2026-08-23T18:25:28.269Z
- Document slug: `phmsa-interpretation-01-0001`

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