PHMSA Response Letter

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Mr. A.B. Eargood
Brenntag Mid-South, Inc.
P.O. Box 20
Henderson, KY 42420

Reference No. 08-0108

Dear Mr. Eargood:

This is response to your April 11, 2008 letter concerning the Hazardous Materials Table (§ 172.101) entry for “UN 1791, Hypochlorite solutions, 8 (corrosive), PG II” in the
October 1, 2007 edition of the Hazardous Materials Regulations (HMR; 49 CFR Parts
171-180). You asked if the “PG III” designation present in earlier editions of the HMR had been inadvertently deleted.

The answer is yes. The PG III entry for the proper shipping name hypochlorite solutions was inadvertently removed when this entry was revised in a December 29, 2006 final rulemaking published under Docket No. PHMSA-06-25476 (HM-215I; 71 FR 78596, 78622). This error will be corrected in a future rulemaking. In the interim, the PG III entry may continue to be used for hypochlorite solutions that meet the defining criteria for a PG III Class 8 liquid prescribed in § 173.137.

Thank you for bringing this matter to our attention. I hope this information is helpful.

Sincerely,

Hattie L. Mitchell
Chief, Regulatory Review and Reinvention
Office of Hazardous Materials Standards

173.137