# Supresta Built-In Defense — Hazardous Materials Safety Interpretation - **operation:** document - **citation:** 05-0214 - **title:** Supresta Built-In Defense — Hazardous Materials Safety Interpretation - **source type:** guidance - **agency:** Pipeline and Hazardous Materials Safety Administration - **status:** guidance - **official:** true - **published on:** 2005-11-21 - **effective on:** Not available - **summary:** 05-0214 response to Supresta Built-In Defense concerning 172.101. - **machine formats:** - **json:** https://regulus.evalyn.ai/document/phmsa-interpretation-05-0214.json - **markdown:** https://regulus.evalyn.ai/document/phmsa-interpretation-05-0214.md - **app url:** https://regulus.evalyn.ai/document/phmsa-interpretation-05-0214 - **source url:** https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/2005/050214.pdf **body:** <<>> U.S. Department of Transportation Washington, D.C. 20590 400 Seventh Street, S.W. Pipeline and Administration Hazardous Materials Safety NOV 21 2005 Dr. Andy Wang Ref. No. 05-0214 Supresta Built-In Detense Ardsley Park 420 Saw Mill River Road Ardsley, NY 10502 Dear Dr. Wang: This is in response to your September 12, 2005, letter requesting clarification of the Hazardous Materials Regulations (HMR; 49 CFR Parts 100-185). Specifically, you request confirmation from this Office that a product that contains 1 - 4% triphenylphophate in combination with tert-butylated triphenylphosphates is neither a marine pollutant nor a severe marine pollutant and therefore, is not subject to the HMR. Under § 173.22, it is the shipper's responsibility to properly classify and describe a hazardous material. This Office does not normally perform that function. However, based on the information submitted, it is the opinion of this Office that a triphenyl phosphate/tert-butylated triphenyl phosphates mixture containing 1% to 4% triphenyl phosphates is not a marine pollutant nor a severe marine pollutant according to Appendix B in § 172.101. Therefore, provided your product does not otherwise meet the definition of a hazardous material (§171.8), it is not subject to the HMR. Sincerely, Chief, Standards Development Office of Hazardous Materials Standards 172.101 050214 <<>> BAH August 25, 2005 5172101 Mr. Edward T. Mazzullo Classification Director, Office of Hazardous Materials Standards U.S. DOT/PHMSA(PHH-10) 400 7* Street S.W. 05-0214 Washington, D.C. 20590-0001 Dear Mr. Mazzullo: We recently spoke with Kevin of your office in regard to a question about the classification of a product. He suggested that we contact you in order to get written confirmation. We have a product that contains 1 - 4% triphenylphosphate in combination with tert- butylated triphenylphosphates. In our conversation, Kevin indicated that this product would not be regulated as either a marine pollutant or a severe marine pollutant. Please confirm that this product would be accurately classified as non-regulated for transportation purposes Thank you for your review of this product. If you have any questions, please feel free to contact me at (914) 269-5928. Sincerely, implan . Andy Wang Regulafory Affairs Manager Cc: Mark Buczek - **truncated:** false - **body characters:** 2339