{"operation":"document","citation":"12-0058","title":"Sandia National Laboratories, New Mexico — Hazardous Materials Safety Interpretation","source_type":"guidance","agency":"Pipeline and Hazardous Materials Safety Administration","status":"guidance","official":true,"published_on":"2012-04-05","effective_on":null,"summary":"12-0058 response to Sandia National Laboratories, New Mexico concerning 173.22.","machine_formats":{"json":"https://regulus.evalyn.ai/document/phmsa-interpretation-12-0058.json","markdown":"https://regulus.evalyn.ai/document/phmsa-interpretation-12-0058.md"},"app_url":"https://regulus.evalyn.ai/document/phmsa-interpretation-12-0058","source_url":"https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretations/2012/120058.pdf","body":"<<<PAGE 1>>>\n\nU.S. Department\nof Transportation\nPipeline and Hazardous\nMaterials Safety\nAdministration\n1200 New Jersey Avenue, SE\nWashington, D.C. 20590\nAPR 0 s 2312\nMr. David Castillo\nSandia National Laboratories, New Mexico\nRegulated Waste and Pollution Prevention Department, 04144\nP.O. Box 5800, MS1112\nReference No.: 12-0058\nDear Mr. Castillo:\nThis responds to your February 21, 2012 letter requesting clarification of the Hazardous\nMaterials Regulations (HMR; 49 CFR Parts 171-180) applicable to proper shipping names.\nSpecifically, you note that a manufacturer's documentation for the chemical\n1-Hydroxybenzotriazole hydrate indicates it contains 14% water by mass. You add that the\nstoichiometric calculation of water contained in the 1-Hydroxybenzotriazole, monohydrate\nis 13.3% by mass. You ask which of the two Proper Shipping Name entries in the HMR\ntable apples: UN0508, 1-Hyrdroxybenzotriazole, anhydrous, dry or wetted with less than\n20% water by mass, or UN3474, 1-Hydroxybenzotriazole, monohydrate?\nUnder§ 173.22, it is the shipper's responsibility to classify a hazardous material. This Office\ndoes not normally perform this function. However, because the 1-Hydroxybenotriazole hydrate\ncontains less than 20% water by mass, it is the opinion of this Office that UN0508,\n1-Hydroxybenzotrizole, anhydrous, d1y or wetted with less than 20% water by mass, would be\nthe proper shipping name.\nI hope this satisfies your inquiry. Please contact us if we can be of further assistance.\nSincerely,\nT. Glenn Foster\nChief, Regulatory Review and Reinvention Branch\nStandards and Rulemaking Division\n\n<<<PAGE 2>>>\n\nFrom: Castillo, Dave H [mailto:DHCASTI@sandia.gov]\nSent: Tuesday, February 21, 2012 5:17PM\nTo: Lawson, Eleanor (PHMSA)\nCc: Schade, A Carl; Krauss, Maryann; Tetreault, Kenneth J\nSubject: Interpretation\nImportance: High\nEleanor,\nPer our phone discussion today, I have the following question:\nIf the manufacture's documentation for the chemicai1-Hydroxybenzotriazole hydrate indicates it\ncontains 14% water by mass, which of the two Proper Shipping Name entries in the November 1, 2011\nHazardous Materials Table applies: 1-Hydroxybenzotriazole, anhydrous, dry or wetted with less than\n20% water by mass, (UN0508) or 1-Hydroxybenzotriazole, monohydrate (UN3474)?\nIt should be noted that the stoichiometric calculation of water contained in 1-Hydroxybenzotriazole,\nmonohydrate is 13.3% by mass. Therefore, it is not clear if the hydrate/monohydrate forms should be\nregarded as the anhydrous form when the total water is below 20%. Please let me know if you need any\nother information. Thanks.\nDavid Castillo\nSandia National Laboratories, New Mexico\nRegulated Waste and Pollution Prevention Department, 04144\nP.O. Box 5800, MS1112\nAlbuquerque, NM 87185-1112\nOffice (505) 284-4192\nCell (505) 269-1705\nPager(505)951-6340\nFax(505)284-4034","truncated":false,"body_characters":2848}